CA1060373A - Device for dry quenching of coke and other combustible lumpy materials - Google Patents
Device for dry quenching of coke and other combustible lumpy materialsInfo
- Publication number
- CA1060373A CA1060373A CA228,084A CA228084A CA1060373A CA 1060373 A CA1060373 A CA 1060373A CA 228084 A CA228084 A CA 228084A CA 1060373 A CA1060373 A CA 1060373A
- Authority
- CA
- Canada
- Prior art keywords
- chamber
- quenching
- treated
- cooling gas
- quenching chamber
- 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.)
- Expired
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- Coke Industry (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A device for dry quenching coke and other combustible lumpy materials, comprising a vertical chamber made of refractory material with charging and discharging holes located respectively in the upper and lower portions of the chamber separated into two zones by gas outflow holes located along the periphery approximately in the middle height portion of the chamber.
The upper zone is an antechamber, while the lower zone is a quenching chamber proper. Located in the lower portion of the quenching chamber are slots for the inflow of cooling gas into the quenching chamber. The quenching chamber accommodates a divider of the flow of material being treated, positioned on the vertical axis of the quenching chamber through its entire height, resulting in the quenching chamber being of circular-shaped cross-section. Cooling gas inflow passages are provided in the upper portion of the divider of the flow of material being treated.
A device for dry quenching coke and other combustible lumpy materials, comprising a vertical chamber made of refractory material with charging and discharging holes located respectively in the upper and lower portions of the chamber separated into two zones by gas outflow holes located along the periphery approximately in the middle height portion of the chamber.
The upper zone is an antechamber, while the lower zone is a quenching chamber proper. Located in the lower portion of the quenching chamber are slots for the inflow of cooling gas into the quenching chamber. The quenching chamber accommodates a divider of the flow of material being treated, positioned on the vertical axis of the quenching chamber through its entire height, resulting in the quenching chamber being of circular-shaped cross-section. Cooling gas inflow passages are provided in the upper portion of the divider of the flow of material being treated.
Description
10~0373 The invention relates to thermal outfits for cooling heated materials and more particularly, to devices for dry quenching coke and other lumpy materials.
A known device for dry quenching coke and other lumpy materials comprises a vertical chamber made of refractory material. An upper portion of the vertical chamber has a hole for chargi~g material to be treated, and the lower one has a dischar~ing hole. Provided along the periphery of the vertical chamber approximately in its middle height portion are gas outflow holes dividing the vertical chamber into two zones, of which the upper one is an antechamber serving for coke collection, while the lower one is a quenching chamber propert.
The lower portion of the quenching chamber is cone-shaped and is provided :along its periphery with slots for gas delivery to the quenching chamber. Installed in the lower cone-shaped portion of the quenching chamber before the discharging hole, in the direction of the process is a divider of the flow of material being treated, also having passages for gas delivery into the quenching chamber.
During the quenching process, hot material, for example co~e, is charged through the charging hole into the upper portion of the antechamber and passes through the entire vertical chamber by lowering down as the material is being discharged in batches from the discharging hole in the lower portio n of the chamber. Gas delivered into the lower portion of the quenching chamber passes through the burden of material being treated and flows out through the above mentioned gas outflow holes which divide the vertical chamber into the antechamber and the quenching chamber, thus cooling the material being treated.
The investigation in the functioning of the known device for ~ry quenching coke and other combustible lumpy materials '73 has shown that the material being treated descends through the vertical chamber at various speeds: more slowly at the walls of the vertical chamber and in its centre and more rapidly in the section between the centre of the vertical chamber and its walls. The gas motion through the cross-sectional area of the vertical chamber `is also non-uniform: gas flows at a higher speed along the walls of the vertical chamber and at a lower speed, at its centre. Due to the above, the material is cooled quicker along the walls of the vertical chamber, whereas in its centre, especially in the upper portion of the quenching chamber, cooling is slower, thus extending the period of time needed for quenching the material and reducing the output capacity of the dry quenching device.
In these devices, an isotherm of temperatures (600C) along the longitudinal section of the vertical chamber is shaped as a parabole with its apex lowered on the axis of the vertical chamber. In the existing devices, the resistance of the coke burden to the passing-through of gases amounts to as high a value as 25 mm water column per linear meter or 200-~25 mm water column for the entire chamber. Further incre-ase in the productivity of the device by way of delivering a larger amount of cooling gas is inefficient due to a higher specific flow-rate of cooling gas circulating through the quenching chamber and a corresponding higher consumption of power to drive the blower to assure the gas circulation.
Enlarging the cross-sectional area of the vertical chamber pr~portionally to the increase of productivity will inevitably aggravate the non-uniformity of the lowering rate of the material being treated as well as the non-uniformity of the gas distribution over the cross-section of the vertical chamber.
~0~0373 The object of the present invention is to provide a device for dry quenching coke and other combustible lumpy materials in which a uniform displacement of material being treated is obtained over the entire cross-sectional area of the quenching chamber.
Another object of the present invention is to provide a device with uniform distribution of cooling gas in the quenching ~hamber.
According to the invention these objects are achieved by providing a device for dry quenching coke and other combus-tible lumpy materials, comprising: a vertical chamber made of refractory material; a charging hole in the upper portion of said vertical chamber; a discharging hole in the lower portion of said vertical chamber;cooling gas outflow holes located in the periphery and approximately in thè middle height portion of said vertical chamber; the upper zone of said vertical chamber located above said cooling gas outflow holes defining an ante-chamber; the lower zone of said vertical chamber located below said cooling gas outflow holes defining a quenching chamker proper, slots in the lower portion of said quenching chamber for deliver-ing cooling gas thereto: a divider of the flow of material being treated positioned on the vertical axis of said quenching chamber over its entire height, which results in said quenching chamber being of circular-shaped cross-section; passages for inflow of cooling gas into said quenching chamber, made in the upper portion of said divider of the flow of material being treated.
It is recommended that the outlet lengths of the passages for the inflow of cooling gas in the divider of the flow of material being treated be inclined for the purpose of exclud-ing the ingress of the material from the quenching chamber intosaid passages.
()37;~
The passages in the divider of the flow of material being treated may be provided with protective lips positioned above their inlets to exclude ingress of the material from the quenching chamber into said passages.
Pursuant to the invention, the device for dry quenching coke and other combustible lumpy materials assures uniform displàcement of material being treated over the entire cross-sectional area of the quenching chamber and also uniform ~istribution of cooling gas therein. This uniformity is achieved irrespective of the dimensions of the quenching chamber, allowing for the construction of a device of larger dimensions and higher productivity. In addition, the device according to the invention makes it possible to keep to a minimum the specific flow-rate of circulating cooling gas per measure unit of quenched material and the total resistance of the material burden to the passing-throùgh of cooling gas.
To make the invention more readily understood, a specific embodiment thereof will now be described with reference to the accompanying drawings, in which:
Fig. 1 is a longitudinal sectional view of the device for dry quenching coke and other combustible lumpy materials, according to the invention;
Fig. 2 is an illustration of one version of the passages made in the divider of the flow of material being treated, according to the invention.
The device for dry quenching coke and other combustible lumpy materials comprises a vertical chamber 1 (Fig. 1) whose ~alls 2 are made of refractory material. The upper portion of the vertical chamber 1 has a charging hole 3, while the lower portion thereof has a discharging hole 4. Made along the periphery of the vertical chamber 1 approximately in its middle 7~
height portion are holes 5 for the outflow of cooling gas, which holes through sloping gas outflow paths 6 in the wall 2 communicate with a collecting circular passage 7.
Holes 5 divide the vertical chamber 1 into two zones in height: the upper one which is an antechamber 8, and the lower one which is a quenching chamber proper 9. Provided in the lower cone-shaped portion of the quenching chamber 9 are slots 10 for cooling gas inflow, located along the periphery of the quenching chamber 9. Slots 10 communicate with a circular distribution passage 11.
Positioned along the vertical axis of the quenching chamber 9 over its entire height is a divider 12 of the flow of material being treated, which results in the quenching chamber 9 being circular-shaped in its cross-section.
The divider 12 of the flow of material being treated is made from refractory brick. Its bottom portion rests on beams 13 positioned in the cone-shaped portion of the quenching chamber 9. Provided in the upper portion of the divider 12 of the flow of material being treated are passages 14 for cooling gas inflow into the quenching chamber 9, the latter passages communicating with the circular distribution passage 11 through a central passage 15 in the divider 12 of the flow of material being treated.
A tube 16 may have additional holes (not shown) for delivering cooling gas to the lower portion of the quenching chamber 9.
Outlet lengths 17 (Fig. 2) of the passages 14 in the divider 12 of the flow of material being treated should be inclined so as to prevent ingress of the material from the quenching chamber 9 (Fig. 1) into them.
The passages in the divider 12 of the flow of material 7~
being treated may have protective lips 18 (Fig. 2) positioned above the outlets into the quenching chamber, such as passage 141 .
~ he protective lip 18 also prevents the material out of the quenching chamber 9 (Fig. 1) from getting into the passage 141 (Fig. 2).
The cone-shaped portion of the quenching chamber 9 (Fig. 1) i9 l~ned with rubbing-protective basalt slabs 19.
~ The divider 12 of the flow of material being treated also has in its bottom a cone-shaped portion lined with basalt slabs 20.
The lcwer portion of the divider 12 may also have slots 21 for cooling gas inflow to the quenching chamber 9.
The device for dry quenching coke and other combustible lumpy materials operates as follows.
Heated material, such as coke, to be treated in the device, is periodically charged into the antechamber 8 through the charging hole 3, while the cooled material is discharged in small batches from the quenching chamber 9 through the dis-charging hole 4 so that the charged material is gradually ~0 displaced from the antechamber 8 into the quenching chamber 9.
Under operating conditions, the amount of coke or other material accommodatesin the vertical chamber 1 should be such that the cooling gas outflow holes 5 are blocked by the material being treated. Cooling of the heated material takes place in the quenching chamber 9 with the help of cooling gas delivered into the lower portion of the quenching chamber 9 through slots 10, 21 and holes in the tube 16, and into the upper portion of the quenching chamber, through the passages 14 in the divider 12 of the flow of material being treated. Such delivery of cooling gas assures its uniform distribution within the quenching chamber 9 resulting in the uniform cooling of the material over the 10~0;~73 entire cross-sectional area of the quenching chamber 9.
Heated gases are exhausted from the quenching chamber 9 through the holes S and sloping gas outflow pa~s 6 into the collecting circular passage 7 from where they are directed to a boiler house (not shown) for utilization of their heat.
Afterwards, cooled gases are brought through clean`ing devices tnot shown) and further delivered by a blower to the circular distributing passage 11.
The divider 2 of the flow of material being treated assures uniform delivery of the material from the antechamber 8 into the quenching chamber 9 over its entire cross-sectional area, while the circular shaping of the quenching chamber 9 assures uniform displacement of coke over its cross-sectional area irrespective of the dimensions of the quenching chamber 9.
A known device for dry quenching coke and other lumpy materials comprises a vertical chamber made of refractory material. An upper portion of the vertical chamber has a hole for chargi~g material to be treated, and the lower one has a dischar~ing hole. Provided along the periphery of the vertical chamber approximately in its middle height portion are gas outflow holes dividing the vertical chamber into two zones, of which the upper one is an antechamber serving for coke collection, while the lower one is a quenching chamber propert.
The lower portion of the quenching chamber is cone-shaped and is provided :along its periphery with slots for gas delivery to the quenching chamber. Installed in the lower cone-shaped portion of the quenching chamber before the discharging hole, in the direction of the process is a divider of the flow of material being treated, also having passages for gas delivery into the quenching chamber.
During the quenching process, hot material, for example co~e, is charged through the charging hole into the upper portion of the antechamber and passes through the entire vertical chamber by lowering down as the material is being discharged in batches from the discharging hole in the lower portio n of the chamber. Gas delivered into the lower portion of the quenching chamber passes through the burden of material being treated and flows out through the above mentioned gas outflow holes which divide the vertical chamber into the antechamber and the quenching chamber, thus cooling the material being treated.
The investigation in the functioning of the known device for ~ry quenching coke and other combustible lumpy materials '73 has shown that the material being treated descends through the vertical chamber at various speeds: more slowly at the walls of the vertical chamber and in its centre and more rapidly in the section between the centre of the vertical chamber and its walls. The gas motion through the cross-sectional area of the vertical chamber `is also non-uniform: gas flows at a higher speed along the walls of the vertical chamber and at a lower speed, at its centre. Due to the above, the material is cooled quicker along the walls of the vertical chamber, whereas in its centre, especially in the upper portion of the quenching chamber, cooling is slower, thus extending the period of time needed for quenching the material and reducing the output capacity of the dry quenching device.
In these devices, an isotherm of temperatures (600C) along the longitudinal section of the vertical chamber is shaped as a parabole with its apex lowered on the axis of the vertical chamber. In the existing devices, the resistance of the coke burden to the passing-through of gases amounts to as high a value as 25 mm water column per linear meter or 200-~25 mm water column for the entire chamber. Further incre-ase in the productivity of the device by way of delivering a larger amount of cooling gas is inefficient due to a higher specific flow-rate of cooling gas circulating through the quenching chamber and a corresponding higher consumption of power to drive the blower to assure the gas circulation.
Enlarging the cross-sectional area of the vertical chamber pr~portionally to the increase of productivity will inevitably aggravate the non-uniformity of the lowering rate of the material being treated as well as the non-uniformity of the gas distribution over the cross-section of the vertical chamber.
~0~0373 The object of the present invention is to provide a device for dry quenching coke and other combustible lumpy materials in which a uniform displacement of material being treated is obtained over the entire cross-sectional area of the quenching chamber.
Another object of the present invention is to provide a device with uniform distribution of cooling gas in the quenching ~hamber.
According to the invention these objects are achieved by providing a device for dry quenching coke and other combus-tible lumpy materials, comprising: a vertical chamber made of refractory material; a charging hole in the upper portion of said vertical chamber; a discharging hole in the lower portion of said vertical chamber;cooling gas outflow holes located in the periphery and approximately in thè middle height portion of said vertical chamber; the upper zone of said vertical chamber located above said cooling gas outflow holes defining an ante-chamber; the lower zone of said vertical chamber located below said cooling gas outflow holes defining a quenching chamker proper, slots in the lower portion of said quenching chamber for deliver-ing cooling gas thereto: a divider of the flow of material being treated positioned on the vertical axis of said quenching chamber over its entire height, which results in said quenching chamber being of circular-shaped cross-section; passages for inflow of cooling gas into said quenching chamber, made in the upper portion of said divider of the flow of material being treated.
It is recommended that the outlet lengths of the passages for the inflow of cooling gas in the divider of the flow of material being treated be inclined for the purpose of exclud-ing the ingress of the material from the quenching chamber intosaid passages.
()37;~
The passages in the divider of the flow of material being treated may be provided with protective lips positioned above their inlets to exclude ingress of the material from the quenching chamber into said passages.
Pursuant to the invention, the device for dry quenching coke and other combustible lumpy materials assures uniform displàcement of material being treated over the entire cross-sectional area of the quenching chamber and also uniform ~istribution of cooling gas therein. This uniformity is achieved irrespective of the dimensions of the quenching chamber, allowing for the construction of a device of larger dimensions and higher productivity. In addition, the device according to the invention makes it possible to keep to a minimum the specific flow-rate of circulating cooling gas per measure unit of quenched material and the total resistance of the material burden to the passing-throùgh of cooling gas.
To make the invention more readily understood, a specific embodiment thereof will now be described with reference to the accompanying drawings, in which:
Fig. 1 is a longitudinal sectional view of the device for dry quenching coke and other combustible lumpy materials, according to the invention;
Fig. 2 is an illustration of one version of the passages made in the divider of the flow of material being treated, according to the invention.
The device for dry quenching coke and other combustible lumpy materials comprises a vertical chamber 1 (Fig. 1) whose ~alls 2 are made of refractory material. The upper portion of the vertical chamber 1 has a charging hole 3, while the lower portion thereof has a discharging hole 4. Made along the periphery of the vertical chamber 1 approximately in its middle 7~
height portion are holes 5 for the outflow of cooling gas, which holes through sloping gas outflow paths 6 in the wall 2 communicate with a collecting circular passage 7.
Holes 5 divide the vertical chamber 1 into two zones in height: the upper one which is an antechamber 8, and the lower one which is a quenching chamber proper 9. Provided in the lower cone-shaped portion of the quenching chamber 9 are slots 10 for cooling gas inflow, located along the periphery of the quenching chamber 9. Slots 10 communicate with a circular distribution passage 11.
Positioned along the vertical axis of the quenching chamber 9 over its entire height is a divider 12 of the flow of material being treated, which results in the quenching chamber 9 being circular-shaped in its cross-section.
The divider 12 of the flow of material being treated is made from refractory brick. Its bottom portion rests on beams 13 positioned in the cone-shaped portion of the quenching chamber 9. Provided in the upper portion of the divider 12 of the flow of material being treated are passages 14 for cooling gas inflow into the quenching chamber 9, the latter passages communicating with the circular distribution passage 11 through a central passage 15 in the divider 12 of the flow of material being treated.
A tube 16 may have additional holes (not shown) for delivering cooling gas to the lower portion of the quenching chamber 9.
Outlet lengths 17 (Fig. 2) of the passages 14 in the divider 12 of the flow of material being treated should be inclined so as to prevent ingress of the material from the quenching chamber 9 (Fig. 1) into them.
The passages in the divider 12 of the flow of material 7~
being treated may have protective lips 18 (Fig. 2) positioned above the outlets into the quenching chamber, such as passage 141 .
~ he protective lip 18 also prevents the material out of the quenching chamber 9 (Fig. 1) from getting into the passage 141 (Fig. 2).
The cone-shaped portion of the quenching chamber 9 (Fig. 1) i9 l~ned with rubbing-protective basalt slabs 19.
~ The divider 12 of the flow of material being treated also has in its bottom a cone-shaped portion lined with basalt slabs 20.
The lcwer portion of the divider 12 may also have slots 21 for cooling gas inflow to the quenching chamber 9.
The device for dry quenching coke and other combustible lumpy materials operates as follows.
Heated material, such as coke, to be treated in the device, is periodically charged into the antechamber 8 through the charging hole 3, while the cooled material is discharged in small batches from the quenching chamber 9 through the dis-charging hole 4 so that the charged material is gradually ~0 displaced from the antechamber 8 into the quenching chamber 9.
Under operating conditions, the amount of coke or other material accommodatesin the vertical chamber 1 should be such that the cooling gas outflow holes 5 are blocked by the material being treated. Cooling of the heated material takes place in the quenching chamber 9 with the help of cooling gas delivered into the lower portion of the quenching chamber 9 through slots 10, 21 and holes in the tube 16, and into the upper portion of the quenching chamber, through the passages 14 in the divider 12 of the flow of material being treated. Such delivery of cooling gas assures its uniform distribution within the quenching chamber 9 resulting in the uniform cooling of the material over the 10~0;~73 entire cross-sectional area of the quenching chamber 9.
Heated gases are exhausted from the quenching chamber 9 through the holes S and sloping gas outflow pa~s 6 into the collecting circular passage 7 from where they are directed to a boiler house (not shown) for utilization of their heat.
Afterwards, cooled gases are brought through clean`ing devices tnot shown) and further delivered by a blower to the circular distributing passage 11.
The divider 2 of the flow of material being treated assures uniform delivery of the material from the antechamber 8 into the quenching chamber 9 over its entire cross-sectional area, while the circular shaping of the quenching chamber 9 assures uniform displacement of coke over its cross-sectional area irrespective of the dimensions of the quenching chamber 9.
Claims (3)
1. A devide for dry quenching coke and other combustible lumpy materials, comprising: a vertical chamber made of refractory material; a charging hole in the upper portion of said vertical chamber; a discharging hole in the lower portion of said vertical chamber; cooling gas outflow holes located in the periphery and approximately in the middle height portion of said vertical chamber; the upper zone of said vertical chamber located above said cooling gas outflow holes defining an antechamber; the lower zone of said vertical chamber located below said cooling gas outflow holes defining a quenching chamber proper; slots in the lower portion of said quenching chamber for delivering cooling gas thereto; a divider of the flow of material being treated positioned on the vertical axis of said quenching chamber over its entire height, which results in said quenching chamber being of circular-shaped cross-section, passages for inflow of cooling gas into said quenching chamber, mede in the upper portion of said divider of the flow of material being treated.
2. A device as set forth in claim 1, wherein said passages for inflow of cooling gas in the divider of the flow of material being treated include outlet length which are inclined so as to prevent ingress of material being treated from said quenching chamber into said passages.
3. A device as set forth in claim 1, wherein protective lips are provided above the outlets of said cooling gas inflow passages in the divider of the flow of material being treated to prevent ingress of material being treated into said passages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA228,084A CA1060373A (en) | 1975-05-30 | 1975-05-30 | Device for dry quenching of coke and other combustible lumpy materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA228,084A CA1060373A (en) | 1975-05-30 | 1975-05-30 | Device for dry quenching of coke and other combustible lumpy materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1060373A true CA1060373A (en) | 1979-08-14 |
Family
ID=4103191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA228,084A Expired CA1060373A (en) | 1975-05-30 | 1975-05-30 | Device for dry quenching of coke and other combustible lumpy materials |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1060373A (en) |
-
1975
- 1975-05-30 CA CA228,084A patent/CA1060373A/en not_active Expired
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