CN111878841B - Sequential control method for reversing system of rco device - Google Patents
Sequential control method for reversing system of rco device Download PDFInfo
- Publication number
- CN111878841B CN111878841B CN202010705179.6A CN202010705179A CN111878841B CN 111878841 B CN111878841 B CN 111878841B CN 202010705179 A CN202010705179 A CN 202010705179A CN 111878841 B CN111878841 B CN 111878841B
- Authority
- CN
- China
- Prior art keywords
- bed
- valve
- regenerator
- air inlet
- heat storage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/50—Control or safety arrangements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Air Supply (AREA)
Abstract
A RCO device reversing system sequence control method and a DCS system comprise a regenerator A, a regenerator B, a regenerator C and a control platform, wherein an air inlet end and an air outlet end of the regenerator A are respectively provided with an A bed air inlet valve and an A bed air outlet valve; the control platform can monitor the temperatures in the heat storage chamber A, the heat storage chamber B and the heat storage chamber C and control the opening and closing of each valve, and the automatic control of the sequence of the reversing system of the RCO device is realized; the problems that the overpressure problem of the system is caused by slow individual difference action of the reversing valve and the sequence control program cannot normally run of the RCO device are solved; the temperature difference between the regenerators is used as a control object, so that the control precision is high, and the energy-saving and environment-friendly effects are obvious; the feedback signal of the reversing valve switch is not used in the sequence control program, so that the problem that the sequence control program cannot normally run due to the fault of the feedback signal of the reversing valve switch is solved.
Description
Technical Field
The invention belongs to the field of chemical production environment-friendly control and control methods thereof, and particularly relates to a novel RCO device sequence control method of a heat storage catalytic oxidation reversing system and a DCS.
Background
With the development of the world industry, the atmospheric pollution caused by the waste gas discharged by the industry is more and more serious, and the air pollution caused by dust, SO2, NOX and Volatile Organic Compounds (VOCs) contained in the waste gas is the first cause. The VOCs in the water have great harm to human health and human living environment, and are increasingly attracting people's attention. The thermal storage catalytic oxidation (RCO) process converts waste gas into carbon dioxide and water by means of heat energy and catalyst oxidation, and recovers heat released by the waste gas during decomposition, thereby achieving the dual purposes of environmental protection and energy saving. Therefore, the process is widely applied to the treatment project of Volatile Organic Compounds (VOCs).
When the three-body heat storage catalytic oxidation reactor is used, the heat is released integrally, the heat is stored integrally for later use, and the three-body heat storage catalytic oxidation reactor is recycled through the processes of heat release, heat storage and later use. In the prior art, the action sequence of a reversing valve of a reversing system is as follows: firstly, organic waste gas enters a regenerator A under the action of a draught fan, is converted into H2O and CO2 under the action of a catalyst, and then enters a regenerator B after purification, so that the heat of high-temperature gas is transferred to a heat accumulator, and the high-temperature gas is discharged into the atmosphere after being cooled; at the moment, the air inlet valve 2 of the regenerative chamber A reversing system is opened, and the exhaust valve 5 of the regenerative chamber B reversing system is opened. When the temperature of the regenerator A reaches the set temperature, the air inlet valve 2 of the A chamber is closed, the air inlet valve 4 of the B chamber is opened, and the waste gas to be treated enters the B chamber, enters the catalyst layer for reaction and purification, and is discharged into the atmosphere after being stored by the heat accumulator through the C chamber; at this time, the regenerator B switching system intake valve 4 is opened, and the regenerator C switching system exhaust valve 7 is opened. When the temperature of the regenerator B reaches a set value, the B chamber air inlet valve 4 is closed, the C chamber air inlet valve 6 is opened, and waste gas to be treated enters from the C chamber, enters the catalyst layer for reaction and purification, and is discharged into the atmosphere from the A chamber after being subjected to heat storage by the heat accumulator; at the moment, the air inlet valve 6 of the regenerator C reversing system is opened, and the exhaust valve 3 of the regenerator A reversing system is opened. Thus, the operation is repeated and circulated. The electric heater and the purging valve are automatically opened and closed according to set conditions. This prior art implements at ethylene glycol device middle tank district VOCs hidden danger treatment project, and the waste gas purification back can't be discharged has appeared in the pilot run in-process, and RCO processing apparatus system superpressure, system's relief valve take off and jump, the unable normal operating of RCO device, VOCs treatment project exist the potential safety hazard of putting into operation. In the prior art, the temperature of a single heat storage chamber is used as a control object, the control precision is low, the purposes of energy conservation and environmental protection cannot be achieved, and improvement is needed.
Patent document with publication number CN205579597U discloses an instant heating type RCO organic waste gas purification device, which comprises a catalytic oxidation box body, a waste gas inlet pipe, a purified gas outlet pipe, a fan and a cleaning pipeline, wherein the catalytic oxidation box body is composed of a plurality of groups of catalytic oxidation shells, two adjacent groups of catalytic oxidation shells are communicated through a connecting pipeline at the top of the catalytic oxidation shells, the bottom of each catalytic oxidation shell is provided with an air inlet and an air outlet, the air inlet is connected with a backflow cleaning port, the middle part of each catalytic oxidation shell is provided with a heat storage ceramic layer, a catalyst layer and a heating layer, the heat storage ceramic layer is arranged below the catalyst layer, and the number of the catalytic oxidation shells on the catalytic oxidation box body is not less than two; the heat accumulating type VOCs catalytic oxidation device is compact in structure, convenient, energy-saving, high in VOCs waste gas purification efficiency, simple to operate, accurate in control, high in heat efficiency and small in thermal inertia. The automatic control system for the granted patent adopts PLC control, and nowadays when distributed systems develop day by day, the PLC system has high failure rate, is inconvenient to maintain and needs to add extra spare parts, and needs to be improved.
Disclosure of Invention
The invention aims to solve the problems that the RCO device has overpressure caused by individual difference action delay of the reversing valve and a sequence control program cannot normally run, and ensure that the reversing system of the RCO device is normally controlled; ensure the safe and stable operation of the VOCs treatment project device in the middle tank area of the ethylene glycol device and realize the standard emission of VOCs.
The purpose of the invention is realized by the following steps:
a sequential control method for a reversing system of an RCO device comprises a regenerator A, a regenerator B, a regenerator C and a control platform, wherein an air inlet end and an air outlet end of the regenerator A are respectively provided with an A bed air inlet valve and an A bed air outlet valve; the control platform can monitor the temperatures in the heat storage chamber A, the heat storage chamber B and the heat storage chamber C and control the opening and closing of each valve; when the control platform works, the following steps are adopted:
step 1) opening an air inlet valve of a bed A and an air outlet valve of a bed B;
step 2) when the temperature difference between the temperature in the regenerator B and the temperature in the regenerator A is larger than or equal to a set value, opening a C bed exhaust valve, delaying for a specified time, closing a B bed exhaust valve, delaying for a specified time, opening a B bed intake valve, and delaying for a specified time, closing an A bed intake valve;
step 3) when the temperature difference between the temperature in the heat storage chamber C and the temperature in the heat storage chamber B is larger than or equal to a set value, opening an exhaust valve of the bed A, delaying the designated time to close an exhaust valve of the bed C, delaying the designated time to open an intake valve of the bed C, and delaying the designated time to close an intake valve of the bed B;
and 4) when the temperature difference between the temperature in the regenerator A and the temperature in the regenerator C is larger than or equal to a set value, opening the exhaust valve of the B bed, delaying the designated time to close the exhaust valve of the A bed, delaying the designated time to open the intake valve of the A bed, and delaying the designated time to close the intake valve of the C bed.
And circularly executing the step 1) to the step 4) after the step 4) is executed.
A bed purging valve A, a bed purging valve B and a bed purging valve C are respectively arranged at the air inlet end of the heat storage chamber A, the air inlet end of the heat storage chamber B and the air inlet end of the heat storage chamber C, the bed purging valves A, the bed purging valve B and the bed purging valve C are controlled by the control platform, and after the air inlet valve A is closed or the air inlet valve B is closed or the air inlet valve C is closed, the corresponding purging valve is opened to perform purging action.
Organic waste gas enters a regenerator A through an air inlet valve of a bed A to be preheated to a certain temperature under the action of an induced draft fan, and enters a catalytic chamber after reaching the ignition temperature of a catalyst, so that organic matters in the waste gas are converted into carbon dioxide and water, and the purified gas enters a regenerator B to transfer heat carried by high-temperature gas to a regenerator.
Exhausting to atmosphere through a B bed exhaust valve; c, opening a purging valve of the bed C, and performing back flushing action in the chamber C; when the temperature difference between the regenerator B and the regenerator A reaches a set temperature, the bed A air inlet valve is closed, and the bed B air inlet valve is opened.
Gas to be treated enters from the heat storage chamber B, enters the heat storage chamber after absorbing heat and raising temperature through the heat storage chamber, enters the heat storage chamber for reaction and purification, is discharged into the atmosphere through a C bed exhaust valve after being stored by the heat storage chamber C through a heat storage body; the purging valve of the bed A is opened, and the chamber A performs a back flushing action; when the temperature difference between the regenerator C and the regenerator B reaches a set temperature, the B bed air inlet valve is closed, the C bed air inlet valve is opened, the gas to be treated enters from the regenerator C, enters the regenerator after the heat absorption and temperature rise of the regenerator, enters the regenerator for reaction and purification, and is discharged into the atmosphere after the heat accumulation of the regenerator A; the bed B purging valve is opened, and the regenerator B performs a back-flushing action.
The control platform comprises a DCS system.
The air inlet end of the first main air passage and the air inlet end of the regenerator A are provided with a first branch air passage, the air inlet ends of the first main air passage and the regenerator B are provided with a second branch air passage, an A bed purging valve is arranged on the first branch air passage, a B bed purging valve is arranged on the second branch air passage, and a C bed purging valve is arranged on the first main air passage and is close to the air inlet end of the regenerator C;
one end of the second main air passage is connected with the second fan; a third branch air passage is arranged between the second main air passage and the air inlet end of the regenerator A, a fourth branch air passage is arranged between the second main air passage and the air inlet end of the regenerator B, a fifth branch air passage is arranged between the second main air passage and the air inlet end of the regenerator C, the bed A air inlet valve is arranged on the third branch air passage, the bed B air inlet valve is arranged on the fourth branch air passage, and the bed C air inlet valve is arranged on the fifth branch air passage;
one end of the third main air passage is connected with the third fan, a sixth branch air passage is arranged between the third main air passage and the exhaust end of the heat storage chamber A, a seventh branch air passage is arranged between the third main air passage and the exhaust end of the heat storage chamber B, and an eighth branch air passage is arranged between the third main air passage and the exhaust end of the heat storage chamber C; the exhaust valve of the bed A is arranged on the sixth branch air passage, the exhaust valve of the bed B is arranged on the seventh branch air passage, and the exhaust valve of the bed C is arranged on the eighth branch air passage;
one end of the fourth main air passage is connected with the third fan, and the other end of the fourth main air passage is connected with the air inlet end of the chimney mechanism;
one end of the second main air passage connected with the second fan is also connected with the fourth fan;
by adopting the technical scheme, the following technical effects can be brought:
(1) the invention realizes the automatic control of the sequence of the reversing system of the RCO device;
(2) on the premise of not introducing a valve feedback signal of the reversing valve into a sequence control program, in a switching period, firstly opening an exhaust valve at the outlet of the switching period, and then closing the exhaust valve in the previous switching period; then the inlet air inlet valve of the switching period is opened, and finally the inlet air valve of the previous switching period is closed. The problems of overpressure of an RCO device system and incapability of operating the RCO device in sequence control due to the slow switching action of individual difference reversing valves are solved, and the safe and stable operation of the RCO device is ensured;
(3) the invention uses the temperature difference between the regenerators as a control object, has high control precision and obvious energy-saving and environment-friendly effects.
(4) The automatic control system is realized by adopting a DCS system, is safe, reliable and convenient to maintain, does not need to increase extra spare parts, reduces the maintenance cost of the instrument, and has certain economic benefit and social benefit.
(5) The invention does not use the feedback signal of the reversing valve switch, thereby avoiding the problem that the sequence control program can not normally run because of the failure of the feedback signal of the reversing valve switch.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic diagram of the structure of the RCO device commutation system of the present invention.
Detailed Description
As shown in fig. 1, a sequential control method for a reversing system of an RCO device comprises a regenerator A, a regenerator B, a regenerator C and a control platform 1, wherein an air inlet end and an air outlet end of the regenerator A are respectively provided with an A bed air inlet valve 2 and an A bed air outlet valve 3, an air inlet end and an air outlet end of the regenerator B are respectively provided with a B bed air inlet valve 4 and a B bed air outlet valve 5, and an air inlet end and an air outlet end of the regenerator C are respectively provided with a C bed air inlet valve 6 and a C bed air outlet valve 7; the control platform 1 can monitor the temperatures in the heat storage chamber A, the heat storage chamber B and the heat storage chamber C and control the opening and closing of each valve; when the control platform 1 works, the following steps are adopted:
step 1), opening an air inlet valve 2 of a bed A and an air outlet valve 3 of a bed B;
step 2) when the temperature difference between the temperature in the regenerator B and the temperature in the regenerator A is larger than or equal to a set value, opening the exhaust valve 7 of the bed C, closing the exhaust valve 5 of the bed B after delaying for a specified time, opening the intake valve 4 of the bed B after delaying for a specified time, and closing the intake valve 2 of the bed A after delaying for a specified time;
step 3) when the temperature difference between the temperature in the regenerator C and the temperature in the regenerator B is greater than or equal to a set value, opening the exhaust valve 3 of the bed A, delaying the designated time to close the exhaust valve 7 of the bed C, delaying the designated time to open the intake valve 6 of the bed C, and delaying the designated time to close the intake valve 4 of the bed B;
and step 4) when the temperature difference between the temperature in the regenerator A and the temperature in the regenerator C is larger than or equal to a set value, opening the exhaust valve of the bed B, delaying the designated time to close the exhaust valve 3 of the bed A, delaying the designated time to open the air inlet valve 2 of the bed A, and delaying the designated time to close the air inlet valve 6 of the bed C.
And circularly executing the step 1) to the step 4) after the step 4) is executed.
A bed purging valve 8, a bed purging valve 9 and a bed purging valve 10 are respectively arranged at the air inlet end of the heat storage chamber A, the air inlet end of the heat storage chamber B and the air inlet end of the heat storage chamber C, the opening and closing of the bed purging valve 8, the bed purging valve 9 and the bed purging valve 10 are controlled by the control platform 1, and after the air inlet valve 2 of the chamber A is closed, the air inlet valve 4 of the bed B is closed or the air inlet valve 6 of the bed C is closed, the corresponding purging valve is opened to perform purging.
The control platform 1 includes a DCS system.
The heat storage device comprises a first main air passage 11, a second main air passage 12, a third main air passage 13 and a fourth main air passage 14, wherein one end of the first main air passage 11 is connected with a first fan 15, the other end of the first main air passage is connected with the air inlet end of a heat storage chamber C, a first branch air passage 16 is arranged at the air inlet ends of the first main air passage 11 and the heat storage chamber A, a second branch air passage 17 is arranged at the air inlet ends of the first main air passage 11 and the heat storage chamber B, a bed A purging valve 8 is arranged on the first branch air passage 16, a bed B purging valve 9 is arranged on the second branch air passage 17, and a bed C purging valve 10 is arranged on the first main air passage 11 and is close to the air inlet end of the heat storage chamber C;
one end of the second main air duct 12 is connected with a second fan 18; a third branch air passage 19 is arranged between the second main air passage 12 and the air inlet end of the heat storage chamber A, a fourth branch air passage 20 is arranged between the second main air passage 12 and the air inlet end of the heat storage chamber B, a fifth branch air passage 21 is arranged between the second main air passage 12 and the air inlet end of the heat storage chamber C, the A bed air inlet valve 2 is arranged on the third branch air passage 19, the B bed air inlet valve 4 is arranged on the fourth branch air passage 20, and the C bed air inlet valve 6 is arranged on the fifth branch air passage 21;
one end of the third main air passage 13 is connected with a third fan 22, a sixth branch air passage 23 is arranged between the third main air passage 13 and the exhaust end of the heat storage chamber A, a seventh branch air passage 24 is arranged between the third main air passage 13 and the exhaust end of the heat storage chamber B, and an eighth branch air passage 25 is arranged between the third main air passage 13 and the exhaust end of the heat storage chamber C; the bed A exhaust valve 3 is arranged on the sixth branch air passage 23, the bed B exhaust valve 5 is arranged on the seventh branch air passage 24, and the bed C exhaust valve 7 is arranged on the eighth branch air passage 25;
one end of the fourth main air duct 14 is connected to the third fan 22, and the other end is connected to the air inlet end of the chimney mechanism 26;
one end of the second main air passage 12 connected with the second fan 18 is also connected with the fourth fan 27;
preferably, the first fan 15 is a purging fan, the second fan 18 is a loading waste gas induced draft fan, the third fan 22 is a main induced draft fan, and the fourth fan 27 is a tank field waste gas induced draft fan.
For convenience of implementation but not by way of limitation, the designated time may be 1 second or 2 seconds, and those skilled in the art may select other values according to actual conditions.
More specifically, organic waste gas enters a regenerator A through an A bed air inlet valve 2 to be preheated to a certain temperature under the action of an induced draft fan, enters a catalytic chamber after reaching the ignition temperature of a catalyst, so that organic matters in the waste gas are converted into carbon dioxide and water, purified gas enters a regenerator B, and heat carried by high-temperature gas is transferred to a regenerator.
Is exhausted to the atmosphere through an exhaust valve 5 of the bed B; the bed C purging valve 10 is opened, and the chamber C performs a back flushing action; when the difference between the temperature of the regenerator B and the temperature of the regenerator A reaches the set temperature, the bed A air inlet valve 2 is closed, and the bed B air inlet valve 4 is opened.
Gas to be treated enters from the heat storage chamber B, enters the heat storage chamber after absorbing heat and raising temperature through the heat storage chamber, enters the heat storage chamber for reaction and purification, is discharged into the atmosphere through a C bed exhaust valve 7 after being stored by the heat storage chamber C through a heat storage body; the bed A purging valve 8 is opened, and the chamber A performs a back flushing action; when the temperature difference between the regenerator C and the regenerator B reaches a set temperature, the B bed air inlet valve 4 is closed, the C bed air inlet valve 6 is opened, the gas to be treated enters from the regenerator C, enters the regenerator after the regenerator C absorbs heat and heats up, enters the regenerator for reaction and purification, and is discharged into the atmosphere after the regenerator A stores heat through the heat accumulator; the bed B purging valve 9 is opened, and the regenerator B performs a back flushing action.
Claims (10)
1. A sequential control method for a reversing system of an RCO device is characterized by comprising a regenerator A, a regenerator B, a regenerator C and a control platform (1), wherein an air inlet end and an air outlet end of the regenerator A are respectively provided with an A bed air inlet valve (2) and an A bed exhaust valve (3), an air inlet end and an air outlet end of the regenerator B are respectively provided with a B bed air inlet valve (4) and a B bed exhaust valve (5), and an air inlet end and an air outlet end of the regenerator C are respectively provided with a C bed air inlet valve (6) and a C bed exhaust valve (7); the control platform (1) can monitor the temperatures in the regenerative chamber A, the regenerative chamber B and the regenerative chamber C and control the opening and closing of each valve; when the control platform (1) works, the following steps are adopted:
step 1), opening an air inlet valve (2) of a bed A and an air outlet valve (3) of a bed B;
step 2) when the temperature difference between the temperature in the regenerator B and the temperature in the regenerator A is larger than or equal to a set value, opening a C bed exhaust valve (7), closing a B bed exhaust valve (5) after delaying for a specified time, opening a B bed intake valve (4) after delaying for a specified time, and closing an A bed intake valve (2) after delaying for a specified time;
step 3) when the temperature difference between the temperature in the heat storage chamber C and the temperature in the heat storage chamber B is larger than or equal to a set value, opening an A bed exhaust valve (3), delaying the designated time to close a C bed exhaust valve (7), delaying the designated time to open a C bed intake valve (6), and delaying the designated time to close a B bed intake valve (4);
and step 4), when the temperature difference between the temperature in the regenerator A and the temperature in the regenerator C is larger than or equal to a set value, opening the exhaust valve of the bed B, delaying the designated time to close the exhaust valve of the bed A (3), delaying the designated time to open the intake valve of the bed A (2), and delaying the designated time to close the intake valve of the bed C (6).
2. The sequential control method for the RCO device reversing system according to claim 1, wherein the steps 1) to 4) are performed circularly after the step 4) is performed.
3. The RCO device commutation system sequence control method of claim 1, wherein: a bed purging valve (8), a bed purging valve (9) and a bed purging valve (10) are respectively arranged at the air inlet end of the heat storage chamber A, the air inlet end of the heat storage chamber B and the air inlet end of the heat storage chamber C, the opening and closing of the bed purging valve (8), the bed purging valve (9) and the bed purging valve (10) are controlled by the control platform (1), and after the air inlet valve (2) of the chamber A is closed, the air inlet valve (4) of the bed B is closed or the air inlet valve (6) of the bed C is closed, the corresponding purging valve is opened to perform purging action.
4. A method of sequential control of a RCO device commutation system according to any one of claims 1 to 3, wherein: organic waste gas enters a regenerator A through an A bed air inlet valve (2) to be preheated to a certain temperature under the action of a draught fan, enters a catalytic chamber after reaching the ignition temperature of a catalyst, and enters a regenerator B after being purified, so that heat carried by high-temperature gas is transferred to a heat accumulator.
5. The RCO device commutation system sequence control method of claim 4, wherein: is discharged into the atmosphere through a B bed exhaust valve (5); a C bed purging valve (10) is opened, and a C chamber executes a back flushing action; when the temperature difference between the regenerator B and the regenerator A reaches a set temperature, the A bed air inlet valve (2) is closed, and the B bed air inlet valve (4) is opened.
6. The RCO device commutation system sequence control method of claim 5, wherein: gas to be treated enters from the heat storage chamber B, enters the heat storage chamber after absorbing heat and raising temperature, enters the heat storage chamber for reaction and purification, is discharged into the atmosphere by a C bed exhaust valve (7) after being stored by the heat storage body in the heat storage chamber C; the bed A purging valve (8) is opened, and the chamber A performs a back flushing action; when the temperature difference between the regenerator C and the regenerator B reaches a set temperature, the B bed air inlet valve (4) is closed, the C bed air inlet valve (6) is opened, the gas to be treated enters from the regenerator C, is subjected to heat absorption and temperature rise by the regenerator, enters the regenerator for reaction and purification, is subjected to heat storage by the regenerator A and then is discharged into the atmosphere; and (4) opening a purging valve (9) of the bed B, and performing a back flushing action on the heat storage chamber B.
7. A method of sequential control of a RCO device commutation system according to claim 1, 2 or 3, wherein: the control platform (1) comprises a DCS system.
8. A method of sequential control of a RCO device commutation system according to claim 1, 2 or 3, wherein: it still includes first main air flue (11), second main air flue (12), third main air flue (13), fourth main air flue (14), the one end and first fan (15) of first main air flue (11) are connected, the other end is connected with regenerator C's inlet end, be equipped with first branch air flue (16) at first main air flue (11) and regenerator A's inlet end, be equipped with second branch air flue (17) at first main air flue (11) and regenerator B's inlet end, A bed purge valve (8) set up on first branch air flue (16), B bed purge valve (9) set up on second branch air flue (17), C bed purge valve (10) set up on first main air flue (11) and be close to regenerator C inlet end's position.
9. The RCO device commutation system sequence control method of claim 8, wherein: one end of the second main air passage (12) is connected with a second fan (18); a third branch air passage (19) is arranged between the second main air passage (12) and the air inlet end of the heat storage chamber A, a fourth branch air passage (20) is arranged between the second main air passage (12) and the air inlet end of the heat storage chamber B, a fifth branch air passage (21) is arranged between the second main air passage (12) and the air inlet end of the heat storage chamber C, the bed A air inlet valve (2) is arranged on the third branch air passage (19), the bed B air inlet valve (4) is arranged on the fourth branch air passage (20), and the bed C air inlet valve (6) is arranged on the fifth branch air passage (21);
one end of the third main air passage (13) is connected with the third fan (22), a sixth branch air passage (23) is arranged between the third main air passage (13) and the exhaust end of the heat storage chamber A, a seventh branch air passage (24) is arranged between the third main air passage (13) and the exhaust end of the heat storage chamber B, and an eighth branch air passage (25) is arranged between the third main air passage (13) and the exhaust end of the heat storage chamber C; the bed A exhaust valve (3) is arranged on the sixth branch air passage (23), the bed B exhaust valve (5) is arranged on the seventh branch air passage (24), and the bed C exhaust valve (7) is arranged on the eighth branch air passage (25);
one end of the fourth main air passage (14) is connected with the third fan (22), and the other end is connected with the air inlet end of the chimney mechanism (26).
10. The RCO device commutation system sequence control method of claim 9, wherein: one end of the second main air passage (12) connected with the second fan (18) is also connected with the fourth fan (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010705179.6A CN111878841B (en) | 2020-07-21 | 2020-07-21 | Sequential control method for reversing system of rco device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010705179.6A CN111878841B (en) | 2020-07-21 | 2020-07-21 | Sequential control method for reversing system of rco device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111878841A CN111878841A (en) | 2020-11-03 |
| CN111878841B true CN111878841B (en) | 2022-06-03 |
Family
ID=73155645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010705179.6A Active CN111878841B (en) | 2020-07-21 | 2020-07-21 | Sequential control method for reversing system of rco device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111878841B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112594715B (en) * | 2021-01-13 | 2024-03-29 | 中国石油天然气集团有限公司 | High-efficiency sealing and purging program-controlled switching system of heat accumulating combustion device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3515253B2 (en) * | 1995-11-30 | 2004-04-05 | トリニティ工業株式会社 | Thermal storage type deodorizing equipment |
| CN105716096A (en) * | 2016-03-25 | 2016-06-29 | 北京矿大节能科技有限公司 | Heat accumulating type organic waste gas incinerator and running method thereof |
| CN106556017A (en) * | 2016-11-11 | 2017-04-05 | 江苏中科睿赛污染控制工程有限公司 | The control system and its operational approach of organic waste gas catalytic combustion device |
| CN110043910A (en) * | 2019-05-24 | 2019-07-23 | 上海兰宝环保科技有限公司 | Three Room of one kind exchange heat accumulation type off-gas incinerator and its processing method |
-
2020
- 2020-07-21 CN CN202010705179.6A patent/CN111878841B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111878841A (en) | 2020-11-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202478779U (en) | System device for treating organic waste gas by adsorption-catalytic combustion | |
| CN212855120U (en) | Emission device for purifying volatile organic compounds | |
| CN102913919A (en) | Method for purifying high-concentration organic waste gas | |
| CN111878841B (en) | Sequential control method for reversing system of rco device | |
| CN113274840A (en) | Device and method for treating VOCs waste gas through activated carbon adsorption high-temperature desorption-catalytic oxidation | |
| CN205517124U (en) | Organic waste gas processing apparatus based on fixed molecular sieve adsorption bed | |
| CN211471329U (en) | Blast furnace gas desulfurization and desorption gas sintering treatment system | |
| CN211471330U (en) | Blast furnace gas desulfurization and desorption gas oxidation treatment system | |
| CN101940869B (en) | Purification method and device of exhaust gas of purified terephthalic acid oxidizing device | |
| CN209279177U (en) | A kind of heat accumulating type Catalytic oxidation furnace | |
| CN110939940A (en) | Waste gas purification and waste heat recovery method and device thereof | |
| CN110917813A (en) | Integrated treatment process and device for harmful gas in production of new composite material | |
| CN106352355A (en) | Volatile-organic-compound-waste-gas thermal storage oxidation system | |
| CN101722060B (en) | Once through regeneration for an olefin cracking reactor | |
| CN218742019U (en) | A organic solvent removes and retrieves car for VOCs adsorbs purification | |
| CN207042186U (en) | A kind of organic waste gas treatment system | |
| CN215610371U (en) | Analytic desorption device | |
| CN206469272U (en) | A kind of heat accumulating type incineration device for aoxidizing furnace exhaust | |
| CN116531937A (en) | SCR reactor system capable of in-situ regeneration and application method thereof | |
| CN216778841U (en) | Online regenerated catalyst system | |
| CN109268843A (en) | The device and method of dioxin, CO and nitrogen oxides in integration removing flue gas | |
| CN214345391U (en) | Catalytic combustion exhaust treatment device | |
| CN212348748U (en) | Desorption regeneration activation system of adsorbent | |
| CN209123935U (en) | A kind of dry cooling device of active-carbon bed safety | |
| CN101954236A (en) | Processing process of maleic anhydride waste gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |