CN110951504B - Cooling and collecting method of hydro-gasification semicoke - Google Patents
Cooling and collecting method of hydro-gasification semicoke Download PDFInfo
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- CN110951504B CN110951504B CN201811131872.6A CN201811131872A CN110951504B CN 110951504 B CN110951504 B CN 110951504B CN 201811131872 A CN201811131872 A CN 201811131872A CN 110951504 B CN110951504 B CN 110951504B
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- 238000001816 cooling Methods 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000002309 gasification Methods 0.000 title claims abstract description 21
- 238000000926 separation method Methods 0.000 claims abstract description 21
- 239000007787 solid Substances 0.000 claims abstract description 17
- 239000007789 gas Substances 0.000 claims description 59
- 239000000463 material Substances 0.000 claims description 28
- 239000000112 cooling gas Substances 0.000 claims description 16
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 230000014759 maintenance of location Effects 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 9
- 239000000571 coke Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 15
- 238000012423 maintenance Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000008247 solid mixture Substances 0.000 description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/82—Gas withdrawal means
- C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
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- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Separating Particles In Gases By Inertia (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention discloses a method for cooling and collecting hydro-gasification semicoke, which comprises the following steps: (1) cooling the high-temperature semicoke discharged from the gasification furnace by using a semicoke cooler; (2) primary gas-solid separation is carried out by utilizing a semicoke collector; (3) and (5) performing secondary gas-solid separation by using a cyclone separator. The novel semicoke cooler has the advantages that the top of each air chamber is provided with a top air inlet pipe, the bottom of each air chamber is provided with a bottom air inlet pipe, each top air inlet pipe and each bottom air inlet pipe are respectively provided with an electric control adjusting valve, the cooling effect of semicoke can be improved by adjusting the air inflow of each top air inlet pipe and each bottom air inlet pipe, the residence time of semicoke in the novel semicoke cooler is controlled by controlling the difference value between the air inflow of the top air inlet pipe and the air inflow of the bottom air inlet pipe of the first air chamber, and the residence time and the cooling effect of semicoke in the cooling device are well controlled.
Description
The technical field is as follows:
the invention relates to a process for treating hydro-gasification semicoke, in particular to a method for cooling and collecting hydro-gasification semicoke.
Background art:
under the conditions of medium temperature (700 ℃ C.), high pressure (5-10MPa) and hydrogen-rich, coal powder reacts with hydrogen to directly generate methane, and the process of light aromatic hydrocarbon oil and clean semicoke is called coal hydro-gasification process. The semicoke produced by the coal hydro-gasification process has high temperature and can be stored only after being cooled. The existing semicoke cooling device adopts a mode of combining fluidized gas and a heat exchange tube, after semicoke enters the cooling device, the semicoke is upwards blown by the fluidized gas entering from the bottom of the cooling device, exchanges heat with a cooling medium in the heat exchange tube above the inside of the cooling device, is discharged from a semicoke outlet on the side wall of the cooling device, and enters a semicoke collector for collection.
The following problems exist in the cooling and collection of the semicoke at present: 1. in the semicoke cooler, when semicoke is blown upwards by fluidized gas, the semicoke continuously impacts the heat exchange tube, so that the heat exchange tube is vibrated greatly, the joint of the heat exchange tube and the side wall of the cooling device is broken, and the heat exchange tube falls; the semicoke continuously rubs with the heat exchange tube, so that the heat exchange tube is seriously abraded and is easy to leak; the cooling device is easy to damage, needs to be overhauled once in 3 months at most, and has short overhaul period and high maintenance cost; 2. the fluidized gas enters from the bottom of the cooling device and blows the semicoke in a single direction, if the cooling effect of the semicoke is not good and the cooling effect is improved by adjusting the large gas amount, the retention time of the semicoke in the cooling device can be shortened, and the cooling effect of the semicoke cannot be improved, so that the retention time and the cooling effect of the semicoke in the cooling device are difficult to control; 3. the outlet of the semicoke discharge pipe of the cyclone separator is communicated with the interior of the semicoke collector, but is not inserted into the material layer, the discharged semicoke can enter the cyclone separator again along with the cooling gas, and the separation effect is poor.
The invention content is as follows:
the invention aims to provide a cooling and collecting method of hydrogenated gasification semicoke, which is convenient for controlling the retention time of the semicoke in a semicoke cooler, can improve the cooling effect of the semicoke and the separation effect of the semicoke and cooling gas.
The invention is implemented by the following technical scheme: the cooling and collecting method of the hydro-gasification semicoke comprises the following steps: (1) cooling the high-temperature semicoke discharged from the gasification furnace by using a semicoke cooler; (2) primary gas-solid separation is carried out by utilizing a semicoke collector; (3) secondary gas-solid separation is carried out by using a cyclone separator; wherein,
(1) cooling the high-temperature semicoke discharged from the gasification furnace by using a semicoke cooler: high-temperature semicoke is sent into a first air chamber of a semicoke cooler from a high-temperature semicoke inlet, cooling air is introduced into the corresponding air chamber from a top air inlet pipe and a bottom air inlet pipe of each air chamber, the heat exchange retention time of the high-temperature semicoke in each air chamber is controlled by adjusting the air inflow of the top air inlet pipe and the bottom air inlet pipe of each air chamber, and the high-temperature semicoke is cooled by a plurality of air chambers in sequence, discharged from a cooling semicoke outlet along with the cooling air and enters a semicoke collector;
(2) primary gas-solid separation by using a semicoke collector: cooling semicoke enters the semicoke collector along with cooling gas, a discharge valve at the bottom of the semicoke collector is closed, part of the cooling semicoke naturally sinks to fall at the bottom of the semicoke collector to form a material layer, when the material layer reaches a discharge height, the discharge valve is opened, part of the cooling semicoke is discharged, and the remaining material layer needs to cover an outlet of a semicoke discharge pipe of the cyclone separator; the unsettled cooled semicoke enters the cyclone separator along with the cooling gas;
(3) secondary gas-solid separation by using a cyclone separator: and after entering the cyclone separator along with the cooling gas, the undeposited cooled semicoke is subjected to gas-solid separation through the cyclone separator, the separated cooling gas enters a gas pipe network, and the separated cooled semicoke is discharged into the semicoke collector along with the discharge of the materials in the semicoke collector when the semicoke collector discharges the materials.
Further, the step (1) is operated as follows: the high-temperature semicoke inlet is arranged at the lower part of the semicoke cooler, the cooling semicoke outlet is arranged at the upper part of the semicoke cooler, and the high-temperature semicoke is in an overflow state in the first air chamber and the last air chamber by adjusting the air inflow of the top air inlet pipe and the bottom air inlet pipe corresponding to the first air chamber and the last air chamber; in the plurality of air chambers positioned between the first air chamber and the last air chamber, the semicoke flow port at the discharge side of each air chamber is positioned below the baffle group, and the air inflow of the corresponding bottom air inlet pipe is larger than that of the top air inlet pipe; and for the semi-coke flow port on the discharge side of the air chamber, which is positioned above the baffle group, the air inflow of the corresponding bottom air inlet pipe is the same as that of the top air inlet pipe.
Furthermore, the air inflow of the top air inlet pipe of the first air chamber is smaller than that of the bottom air inlet pipe, and the difference between the air inflow of the top air inlet pipe and the air inflow of the bottom air inlet pipe of the first air chamber is increased along with the increase of the added high-temperature carbocoal; the air inflow of the top air inlet pipe and the air inflow of the bottom air inlet pipe of the first air chamber are increased along with the increase of the amount of the added high-temperature semicoke; the larger the difference between the air inflow of the top air inlet pipe and the air inflow of the bottom air inlet pipe of the first air chamber is, the longer the high-temperature semicoke stays in the first air chamber;
the air inlet amount of the top air inlet pipe and the air inlet amount of the bottom air inlet pipe of the last air chamber are the same; the air inflow of the top air inlet pipe and the bottom air inlet pipe of the last air chamber is increased along with the increase of the amount of the added high-temperature semicoke;
and in the plurality of air chambers positioned between the first air chamber and the last air chamber, the air inflow of the bottom air inlet pipe and the air inflow of the top air inlet pipe of each air chamber are increased along with the increase of the amount of the added high-temperature semicoke.
Further, when the discharge temperature of the semicoke cooler is higher than a preset value, the discharge temperature of the semicoke cooler can be reduced by prolonging the retention time of the semicoke in the semicoke cooler; the specific operation method comprises the following steps:
increasing the air inflow of the top air inlet pipe of the first air chamber, the top air inlet pipe of the last air chamber and the air inflow of the bottom air inlet pipe of the last air chamber by 50Nm3Prolonging the retention time of the semicoke in the semicoke cooler; if the temperature value of the cooled semicoke outlet still exceeds the preset value, continuing to increase the air inflow of the top air inlet pipe of the first air chamber, the air inflow of the top air inlet pipe of the last air chamber and the air inflow of the bottom air inlet pipe of the last air chamber by 50Nm respectively3And h, ensuring that the air inflow of the bottom air inlet pipe of the first air chamber is always larger than that of the top air inlet pipe in the adjusting process until the temperature value of the cooled semicoke outlet meets the requirement.
Further, when the discharge temperature of the semicoke cooler is higher than a preset value, the discharge temperature of the semicoke cooler is reduced by increasing the gas amount in each gas chamber; the specific operation method comprises the following steps:
firstly, simultaneously increasing the air inflow of the top air inlet pipe and the bottom air inlet pipe of the last air chamber by 50Nm3If the temperature value of the cooled semicoke outlet still exceeds a preset value, increasing the air inflow of the top air inlet pipe and the bottom air inlet pipe of the previous air chamber by 50Nm3H, sequentially increasing each air chamber from back to front according to the above processAnd (4) feeding air until the temperature value of the cooled semicoke outlet meets the requirement.
Further, the discharge height is 60% of the inner space of the semicoke collector.
The semicoke cooler is characterized by comprising a shell, wherein a high-temperature semicoke inlet is arranged at the lower part of the side wall of the shell, a cooling semicoke outlet is arranged at the upper part of the side wall of the shell opposite to the high-temperature semicoke inlet, a temperature sensor is arranged at the cooling semicoke outlet, a plurality of baffle groups which are parallel to each other are sequentially arranged in the shell between the high-temperature semicoke inlet and the cooling semicoke outlet, the shell is divided into a plurality of gas chambers by the baffle groups, the top of each gas chamber is respectively provided with one top gas inlet pipe, the bottom of each gas chamber is respectively provided with one bottom gas inlet pipe, and each top gas inlet pipe and each bottom gas inlet pipe are respectively provided with one electric control regulating valve and one flow sensor; each baffle group is provided with a semicoke flowing opening, and two adjacent semicoke flowing openings are alternately arranged up and down.
Further, the inside level of casing is equipped with gas distributing plate and lower gas distributing plate, go up gas distributing plate with gas distributing plate goes up the equipartition respectively down and has the gas pocket, go up gas distributing plate with gas distributing plate's edge respectively with the inner wall sealing connection of casing down, and with every the air chamber divide into three independent cavity from top to bottom, the semicoke flows the mouth high temperature semicoke import with the cooling semicoke export all is located go up gas distributing plate with between the gas distributing plate down.
Furthermore, the baffle group comprises an upper baffle plate and a lower baffle plate which are arranged up and down, the upper baffle plate and the lower baffle plate are positioned in the same vertical plane, and the edges of two sides and the top of the upper baffle plate are hermetically connected with the shell; the edges of the two sides and the bottom of the lower baffle plate are hermetically connected with the shell; and the semicoke flowing opening is formed between the bottom edge of the upper baffle plate and the top edge of the lower baffle plate.
Furthermore, the semicoke cooler still includes the PLC controller, the signal input part of PLC controller respectively with temperature sensor, every flow sensor's signal output part is connected, the signal output part of PLC controller respectively with every the signal input part of automatically controlled governing valve is connected.
The invention has the advantages that: 1. the gas distribution plate and the baffle plate group are arranged in the semicoke cooler, the flow direction of the semicoke is controlled by cooling gas, the gas distribution plate and the baffle plate group cannot impact the front side of the semicoke, the semicoke cooler is difficult to damage, the semicoke cooler needs to be maintained after continuous working for at least more than 1 year, the maintenance period of the semicoke cooler is prolonged, and the maintenance cost is reduced; 2. the top of each air chamber is provided with a top air inlet pipe, the bottom of each air chamber is provided with a bottom air inlet pipe, each top air inlet pipe and each bottom air inlet pipe are respectively provided with an electric control regulating valve, the cooling effect of the semicoke can be improved by increasing the air inflow of each top air inlet pipe and each bottom air inlet pipe of each air chamber, the residence time of the semicoke in the semicoke cooler is controlled by controlling the difference value between the air inflow of the top air inlet pipe and the bottom air inlet pipe of the first air chamber, and the residence time and the cooling effect of the semicoke in the semicoke cooler are well controlled; 3. the semicoke discharge pipe outlet of the cyclone separator is inserted into the material layer of the semicoke collector, and the separated cooled semicoke is discharged into the semicoke collector along with the discharge of the materials in the semicoke collector when the semicoke collector discharges the materials, so that the cooled semicoke cannot return to the inside of the cyclone separator along with the cooled gas on the upper part of the material layer, and the separation effect of the semicoke and the cooled gas is ensured.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the system of the present invention;
fig. 2 is a control schematic diagram of the PLC controller.
The device comprises a semicoke cooler 1, a semicoke collector 2, a top air inlet pipe 3, a bottom air inlet pipe 4, a discharge valve 5, a cyclone separator 6, a semicoke discharge pipe 7, an air chamber 8, a high-temperature semicoke inlet 9, a cooling semicoke outlet 10, a temperature sensor 11, a baffle group 12, an electric control regulating valve 13, a flow sensor 14, an upper gas distribution plate 15, a lower gas distribution plate 16, a PLC (programmable logic controller) 17 and a material level sensor 18.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
as shown in figure 1-2, the novel hydro-gasification semicoke cooling and collecting device comprises a semicoke cooler 1, a cyclone separator 6 and a semicoke collector 2,
a cooled semicoke outlet 10 of the semicoke cooler 1 is connected with a semicoke collecting inlet of the semicoke collector 2 through a pipeline, a gas-solid mixture outlet of the semicoke collector 2 is connected with a feeding port of the cyclone separator 6 through a pipeline, a solid material outlet of the cyclone separator 6 is connected with a semicoke discharging pipe 7, and a discharging end of the semicoke discharging pipe 7 penetrates through the side wall of the semicoke collector 2 and is arranged at the inner bottom of the semicoke collector 2; the outlet of the semicoke discharge pipe 7 of the cyclone separator 6 is inserted into the material layer of the semicoke collector 2, and when the separated cooled semicoke is discharged from the semicoke collector 2, the separated cooled semicoke is discharged into the semicoke collector 2 along with the discharge of the materials in the semicoke collector 2, and the separated cooled semicoke cannot return to the inside of the cyclone separator 6 again along with the cooled gas on the upper part of the material layer, so that the separation effect of the semicoke and the cooled gas is ensured.
The semicoke cooler 1 comprises a shell, wherein a high-temperature semicoke inlet 9 is arranged at the lower part of the side wall of the shell, a cooled semicoke outlet 10 is arranged at the upper part of the side wall of the shell opposite to the high-temperature semicoke inlet 9, a temperature sensor 11 is arranged at the cooled semicoke outlet 10, two pairs of baffle groups 12 which are parallel to each other are sequentially arranged in the shell between the high-temperature semicoke inlet 9 and the cooled semicoke outlet 10, each baffle group 12 comprises an upper baffle plate and a lower baffle plate which are arranged up and down, the upper baffle plate and the lower baffle plate are positioned in the same vertical plane, and the edges of two sides and the top of the upper baffle plate are hermetically connected; the two side edges and the bottom edge of the lower baffle plate are hermetically connected with the shell; and a semicoke flowing opening is arranged between the bottom edge of the upper baffle plate and the top edge of the lower baffle plate, and two adjacent semicoke flowing openings are alternately arranged up and down. The shell is divided into three air chambers by the two pairs of baffle groups 12, the top of each air chamber is provided with a top air inlet pipe, the bottom of each air chamber is provided with a bottom air inlet pipe, and each top air inlet pipe and each bottom air inlet pipe are respectively provided with an electric control regulating valve and a flow sensor; the cooling effect of the semicoke can be improved by increasing the air inflow of the top air inlet pipe and the bottom air inlet pipe of each air chamber, and the residence time of the semicoke in the semicoke cooler 1 is controlled by controlling the difference value between the air inflow of the top air inlet pipe and the air inflow of the bottom air inlet pipe of the first air chamber, so that the residence time and the cooling effect of the semicoke in the semicoke cooler 1 are well controlled.
An upper gas distribution plate 15 and a lower gas distribution plate 16 are horizontally arranged in the shell, air holes are respectively and uniformly distributed on the upper gas distribution plate 15 and the lower gas distribution plate 16, the edges of the upper gas distribution plate 15 and the lower gas distribution plate 16 are respectively and hermetically connected with the inner wall of the shell, each air chamber is divided into three independent chambers from top to bottom, and a semicoke flow port, a high-temperature semicoke inlet 9 and a cooling semicoke outlet 10 are all positioned between the upper gas distribution plate 15 and the lower gas distribution plate 16; the inside gas distribution board and the baffle group 12 that are equipped with of semicoke cooler 1, through the flow direction of cooling gas control semicoke, gas distribution board and baffle group 12 can not take place the front striking with the semicoke, and is not fragile, and at least continuous operation need be overhauld more than 1 year, has prolonged semicoke cooler 1's maintenance cycle, has reduced cost of maintenance.
The upper side wall of the semicoke collector 2 is provided with a semicoke collecting inlet, the top of the semicoke collector 2 is provided with a gas-solid mixture outlet, the bottom of the semicoke collector 2 is provided with a semicoke outlet, the semicoke outlet is provided with a discharge valve 5, and the semicoke collector 2 is internally provided with a material level sensor 18.
The material level sensor further comprises a PLC (programmable logic controller) 17, wherein the signal input end of the PLC 17 is respectively connected with the signal output ends of the temperature sensor 11, each flow sensor and the material level sensor 18, and the signal output end of the PLC 17 is respectively connected with the signal input end of each electric control regulating valve and the signal input end of each discharging valve 5.
Example 2:
the cooling and collecting method of the hydro-gasification semicoke implemented according to the novel cooling and collecting device of the hydro-gasification semicoke in the embodiment 1 comprises the following steps: (1) cooling the high-temperature semicoke discharged from the gasification furnace by using a semicoke cooler; (2) primary gas-solid separation is carried out by utilizing a semicoke collector; (3) secondary gas-solid separation is carried out by using a cyclone separator; wherein,
(1) cooling the high-temperature semicoke discharged from the gasification furnace by using a semicoke cooler: the high-temperature semicoke inlet 9 is arranged at the lower part of the semicoke cooler 1, the cooling semicoke outlet 10 is arranged at the upper part of the semicoke cooler 1, and the high-temperature semicoke is sent into a first air chamber of the semicoke cooler 1 from the high-temperature semicoke inlet 9 at the flow rate of 17 tons/hour; cooling air is introduced into the corresponding air chambers through the top air inlet pipe and the bottom air inlet pipe of each air chamber, and the high-temperature semicoke is in an overflow state in the first air chamber and the third air chamber by adjusting the air inflow of the top air inlet pipe and the bottom air inlet pipe corresponding to the first air chamber and the third air chamber; the air inflow of the air inlet pipe at the bottom of the second air chamber is larger than that of the air inlet pipe at the top; the heat exchange retention time of the high-temperature semicoke in each air chamber can be controlled by adjusting the air inflow of the top air inlet pipe and the bottom air inlet pipe of each air chamber, and the cooled semicoke cooled by the three air chambers in sequence is discharged from a semicoke cooling outlet 10 along with cooling air and enters a semicoke collector 2;
when the load in the semicoke cooler 1 is stable and the semicoke cooler works normally, the air inflow of the top air inlet pipe of the first air chamber of the semicoke cooler 1 is 400Nm3The air inlet quantity of the air inlet pipe at the bottom of the first air chamber is 600Nm3H, inlet of air inlet pipe at top of second air chamberThe gas amount is 300Nm3The air inlet quantity of the air inlet pipe at the bottom of the second air chamber is 350Nm3The air inflow of the top air inlet pipe of the third air chamber is 500Nm3The air inflow of the air inlet pipe at the bottom of the third air chamber is 500Nm3/h。
The temperature of the high-temperature semicoke entering the semicoke cooler 1 is 800 ℃, the temperature of the high-temperature semicoke discharged from the semicoke cooler 1 is 300 ℃, and when the temperature sensor 11 detects that the discharge temperature of the semicoke cooler 1 is higher than the preset value 300 ℃ in the PLC 17, the discharge temperature of the semicoke cooler 1 can be reduced by prolonging the retention time of the semicoke in the semicoke cooler 1; the specific operation method comprises the following steps:
the PLC 17 firstly sends opening degree increasing signals to the electric control regulating valve at the top of the first air chamber and the electric control regulating valves at the top and the bottom of the third air chamber respectively, and respectively increases the air inflow of the top air inlet pipe of the first air chamber, the top air inlet pipe of the third air chamber and the air inflow of the bottom air inlet pipe by 50Nm3Prolonging the retention time of the semicoke in the semicoke cooler 1; if the detection value of the temperature sensor 11 still exceeds 300 ℃, the PLC 17 sends opening degree increasing signals to the electric control regulating valve at the top of the first air chamber and the electric control regulating valves at the top and the bottom of the third air chamber again respectively, and the air inflow of the top air inlet pipe of the first air chamber and the air inflow of the top air inlet pipe and the air inflow of the bottom air inlet pipe of the third air chamber are continuously increased by 50Nm respectively3And h, ensuring that the air inflow of the air inlet pipe at the bottom of the first air chamber is always larger than that of the air inlet pipe at the top in the adjusting process until the detection value of the temperature sensor 11 is lower than 300 ℃.
When the discharge temperature of the semicoke cooler 1 is higher than 300 ℃, the discharge temperature of the semicoke cooler 1 can be reduced by increasing the gas amount in each gas chamber; the specific operation method comprises the following steps:
the PLC 17 firstly sends opening degree increasing signals to the electric control regulating valves at the top and the bottom of the third air chamber respectively, and simultaneously increases the air inflow of the top air inlet pipe and the bottom air inlet pipe of the third air chamber by 50Nm3H, if the detection value of the temperature sensor 11 still exceeds 300 ℃, the PLC 17 firstly adjusts the top and the bottom of the second air chamber to electric controlThe throttle valve respectively sends opening degree increasing signals, and then the air inflow of the top air inlet pipe and the bottom air inlet pipe of the second air chamber is increased by 50Nm3And h, increasing the air inflow of each air chamber from back to front in sequence according to the process until the detection value of the temperature sensor 11 is lower than 300 ℃.
(2) Primary gas-solid separation by using a semicoke collector: the cooled semicoke enters a semicoke collector 2 along with cooling gas, a discharge valve 5 at the bottom of the semicoke collector 2 is closed, part of the cooled semicoke naturally sinks and falls at the bottom of the semicoke collector 2 to form a material layer, when a material level sensor 18 detects that the material layer reaches 60% of the inner space of the semicoke collector 2, a PLC (programmable logic controller) 17 sends an opening signal to the discharge valve 5, the discharge valve 5 is opened, part of the cooled semicoke is discharged, and when the material layer reaches the outlet height of a semicoke discharge pipe 7 of a cyclone separator 6, the PLC 17 sends a closing signal to the discharge valve 5 and closes the discharge valve 5; the cooling semicoke which is not settled enters a cyclone separator 6 along with cooling gas;
(3) secondary gas-solid separation by using a cyclone separator 6: and after entering the cyclone separator 6 along with the cooling gas, the unsettled cooled semicoke is subjected to gas-solid separation through the cyclone separator 6, the separated cooling gas enters a gas pipe network, and the separated cooled semicoke is discharged into the semicoke collector 2 along with the discharge of the materials in the semicoke collector 2 when the semicoke collector 2 discharges the materials.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The cooling and collecting method of the hydro-gasification semicoke is characterized by comprising the following steps: (1) cooling the high-temperature semicoke discharged from the gasification furnace by using a semicoke cooler; (2) primary gas-solid separation is carried out by utilizing a semicoke collector; (3) secondary gas-solid separation is carried out by using a cyclone separator; wherein,
(1) cooling the high-temperature semicoke discharged from the gasification furnace by using a semicoke cooler: high-temperature semicoke is sent into a first air chamber of a semicoke cooler from a high-temperature semicoke inlet, cooling air is introduced into the corresponding air chamber from a top air inlet pipe and a bottom air inlet pipe of each air chamber, the heat exchange retention time of the high-temperature semicoke in each air chamber is controlled by adjusting the air inflow of the top air inlet pipe and the bottom air inlet pipe of each air chamber, and the high-temperature semicoke is cooled by a plurality of air chambers in sequence, discharged from a cooling semicoke outlet along with the cooling air and enters a semicoke collector;
(2) primary gas-solid separation by using a semicoke collector: cooling semicoke enters the semicoke collector along with cooling gas, a discharge valve at the bottom of the semicoke collector is closed, part of the cooling semicoke naturally sinks to fall at the bottom of the semicoke collector to form a material layer, when the material layer reaches a discharge height, the discharge valve is opened, part of the cooling semicoke is discharged, and the remaining material layer needs to cover an outlet of a semicoke discharge pipe of the cyclone separator; the unsettled cooled semicoke enters the cyclone separator along with the cooling gas;
(3) secondary gas-solid separation by using a cyclone separator: and after entering the cyclone separator along with the cooling gas, the undeposited cooled semicoke is subjected to gas-solid separation through the cyclone separator, the separated cooling gas enters a gas pipe network, and the separated cooled semicoke is discharged into the semicoke collector along with the discharge of the material in the semicoke collector when the semicoke collector discharges the material.
2. The method for cooling and collecting hydrogasification semicoke according to claim 1, wherein the step (1) is operated as follows: the high-temperature semicoke inlet is arranged at the lower part of the semicoke cooler, the cooling semicoke outlet is arranged at the upper part of the semicoke cooler, and the high-temperature semicoke is in an overflow state in the first air chamber and the last air chamber by adjusting the air inflow of the top air inlet pipe and the bottom air inlet pipe corresponding to the first air chamber and the last air chamber; in the air chambers between the first air chamber and the last air chamber, the semicoke flow port on the discharge side of each air chamber is positioned below the baffle group, and the air inflow of the corresponding bottom air inlet pipe is larger than that of the top air inlet pipe; and for the semi-coke flow port on the discharge side of the air chamber, which is positioned above the baffle group, the air inflow of the corresponding bottom air inlet pipe is the same as that of the top air inlet pipe.
3. The method for cooling and collecting the hydro-gasification semicoke according to claim 2, wherein the air inflow of the top air inlet pipe of the first air chamber is smaller than that of the bottom air inlet pipe, and the difference between the air inflow of the top air inlet pipe and the air inflow of the bottom air inlet pipe of the first air chamber is increased along with the increase of the added high-temperature semicoke; the air inflow of the top air inlet pipe and the air inflow of the bottom air inlet pipe of the first air chamber are increased along with the increase of the amount of the added high-temperature semicoke; the larger the difference between the air inflow of the top air inlet pipe and the air inflow of the bottom air inlet pipe of the first air chamber is, the longer the high-temperature semicoke stays in the first air chamber;
the air inlet amount of the top air inlet pipe and the air inlet amount of the bottom air inlet pipe of the last air chamber are the same; the air inflow of the top air inlet pipe and the bottom air inlet pipe of the last air chamber is increased along with the increase of the amount of the added high-temperature semicoke;
and in the plurality of air chambers positioned between the first air chamber and the last air chamber, the air inflow of the bottom air inlet pipe and the air inflow of the top air inlet pipe of each air chamber are increased along with the increase of the amount of the added high-temperature semicoke.
4. The method for cooling and collecting hydrogasification semicoke according to claim 3, wherein when the discharge temperature of the semicoke cooler is higher than a preset value, the discharge temperature of the semicoke cooler can be reduced by prolonging the retention time of the semicoke in the semicoke cooler; the specific operation method comprises the following steps:
increasing the air inflow of the top air inlet pipe of the first air chamber, the top air inlet pipe of the last air chamber and the air inflow of the bottom air inlet pipe of the last air chamber by 50Nm3H, extending the char in said char coolerThe residence time; if the temperature value of the cooled semicoke outlet still exceeds the preset value, continuing to increase the air inflow of the top air inlet pipe of the first air chamber, the air inflow of the top air inlet pipe of the last air chamber and the air inflow of the bottom air inlet pipe of the last air chamber by 50Nm respectively3And h, ensuring that the air inflow of the bottom air inlet pipe of the first air chamber is always larger than that of the top air inlet pipe in the adjusting process until the temperature value of the cooled semicoke outlet meets the requirement.
5. The method for cooling and collecting hydrogasification semicoke according to claim 3, wherein when the discharge temperature of the semicoke cooler is higher than a preset value, the discharge temperature of the semicoke cooler is reduced by increasing the amount of gas in each gas chamber; the specific operation method comprises the following steps:
firstly, simultaneously increasing the air inflow of the top air inlet pipe and the bottom air inlet pipe of the last air chamber by 50Nm3If the temperature value of the cooled semicoke outlet still exceeds a preset value, increasing the air inflow of the top air inlet pipe and the bottom air inlet pipe of the previous air chamber by 50Nm3And h, sequentially increasing the air inflow of each air chamber from back to front according to the process until the temperature value of the cooled semicoke outlet meets the requirement.
6. The method of claim 1, wherein the discharge height is 60% of the internal space of the char collector.
7. The method for cooling and collecting hydrogasification semicoke according to any one of claims 1 to 6, it is characterized in that the semicoke cooler comprises a shell, the lower part of the side wall of the shell is provided with the high-temperature semicoke inlet, the upper part of the side wall of the shell opposite to the high-temperature semicoke inlet is provided with the cooling semicoke outlet, the cooling semicoke outlet is provided with a temperature sensor, a plurality of baffle groups which are parallel to each other are sequentially arranged in the shell between the high-temperature semicoke inlet and the cooling semicoke outlet, the shell is divided into a plurality of air chambers by the baffle groups, the top of each air chamber is respectively provided with a top air inlet pipe, the bottom of each air chamber is respectively provided with a bottom air inlet pipe, each top air inlet pipe and each bottom air inlet pipe are respectively provided with an electric control regulating valve and a flow sensor; each baffle group is provided with a semicoke flowing opening, and two adjacent semicoke flowing openings are alternately arranged up and down.
8. The method for cooling and collecting hydrogasification semicoke according to claim 7, wherein an upper gas distribution plate and a lower gas distribution plate are horizontally arranged in the housing, the upper gas distribution plate and the lower gas distribution plate are respectively and uniformly provided with gas holes, the edges of the upper gas distribution plate and the lower gas distribution plate are respectively connected with the inner wall of the housing in a sealing manner, each gas chamber is divided into three independent chambers from top to bottom, and the semicoke flow port, the high-temperature semicoke inlet and the cooling semicoke outlet are all positioned between the upper gas distribution plate and the lower gas distribution plate.
9. The method for cooling and collecting hydrogasification semicoke according to claim 7, wherein the baffle group comprises an upper baffle plate and a lower baffle plate which are arranged up and down, the upper baffle plate and the lower baffle plate are positioned in the same vertical plane, and two side edges and top edges of the upper baffle plate are hermetically connected with the shell; the edges of the two sides and the bottom of the lower baffle plate are hermetically connected with the shell; and the semicoke flowing opening is formed between the bottom edge of the upper baffle plate and the top edge of the lower baffle plate.
10. The method for cooling and collecting hydrogasification semicoke according to claim 8 or 9, wherein the semicoke cooler further comprises a PLC controller, a signal input end of the PLC controller is connected with a signal output end of each of the temperature sensor and the flow sensor, respectively, and a signal output end of the PLC controller is connected with a signal input end of each of the electrically controlled regulating valves, respectively.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85204900U (en) * | 1985-11-12 | 1987-01-07 | 黄石节能设备厂 | Boiler with heated pipes using waste heat |
| CN86106332A (en) * | 1985-09-17 | 1987-03-18 | 赛森工业股份公司 | Device for drying and cooling coke |
| CN1156474A (en) * | 1995-06-28 | 1997-08-06 | 液态碳工业公司 | Static furnace for thermal decomposition solids at high temperature by thermal rediation |
| CN1257574A (en) * | 1997-05-07 | 2000-06-21 | 科夫克斯公司 | Enhanced heat transfer system |
| CN2506641Y (en) * | 2001-08-24 | 2002-08-21 | 张维田 | Dry quenched coke oven body |
| CN205616853U (en) * | 2016-05-16 | 2016-10-05 | 新奥科技发展有限公司 | Semicoke cooling system |
| CN107502389A (en) * | 2017-09-07 | 2017-12-22 | 东华工程科技股份有限公司 | A kind of hydrogasification coke discharging cooling system and its technique |
-
2018
- 2018-09-27 CN CN201811131872.6A patent/CN110951504B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86106332A (en) * | 1985-09-17 | 1987-03-18 | 赛森工业股份公司 | Device for drying and cooling coke |
| CN85204900U (en) * | 1985-11-12 | 1987-01-07 | 黄石节能设备厂 | Boiler with heated pipes using waste heat |
| CN1156474A (en) * | 1995-06-28 | 1997-08-06 | 液态碳工业公司 | Static furnace for thermal decomposition solids at high temperature by thermal rediation |
| CN1257574A (en) * | 1997-05-07 | 2000-06-21 | 科夫克斯公司 | Enhanced heat transfer system |
| CN2506641Y (en) * | 2001-08-24 | 2002-08-21 | 张维田 | Dry quenched coke oven body |
| CN205616853U (en) * | 2016-05-16 | 2016-10-05 | 新奥科技发展有限公司 | Semicoke cooling system |
| CN107502389A (en) * | 2017-09-07 | 2017-12-22 | 东华工程科技股份有限公司 | A kind of hydrogasification coke discharging cooling system and its technique |
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| CN110951504A (en) | 2020-04-03 |
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