WO2013023324A1

WO2013023324A1 - Dry coke-quenching device for heat-recovery-type coke oven

Info

Publication number: WO2013023324A1
Application number: PCT/CN2011/001363
Authority: WO
Inventors: 徐列; 王彬; 刘伶灵; 陈晓光; 赵洪刚; 王波
Original assignee: 北京华泰焦化工程技术有限公司
Priority date: 2011-08-16
Filing date: 2011-08-16
Publication date: 2013-02-21
Also published as: CN103857769A

Abstract

A dry coke-quenching device for a heat-recovery-type coke oven, comprising a charging device and a dry coke-quenching oven (1), wherein the charging device comprises a hoist (13) and a containing device for containing the red coke outputted from the coke oven, the hoist (13) being used for elevating the containing device for containing the red coke to the top of the dry coke-quenching oven (1) and placing the empty containing device from the top of the dry coke-quenching oven (1) onto a coke-receiving car, and the containing device being a coke ark (14) having a box-shaped structure. The dry coke-quenching device for a heat-recovery-type coke oven solves the problem of the impossibility of using dry quenching for red coke carbonized by a horizontal coke oven, and dispenses with the need to provide a discharge dedusting device at the outlet of the coke oven, thereby reducing the manufacturing and operating costs for a heat-recovery-type coke oven, and at the same time, the contact between the red coke and the air can be reduced, thereby decreasing the loss of heat.

Description

Heat recovery coke oven dry quenching device

The invention belongs to the field of coking, and particularly relates to a heat recovery coke oven dry quenching device. Background technique

The CDQ method uses a colder circulating gas to exchange heat with the red coke in the dry quenching furnace. The circulating gas that absorbs the red coke heat is sent to the boiler, and the heat is recovered in the boiler to form a medium temperature circulating gas. After the gas is further dedusted and cooled, it is returned to the dry furnace, and the cycle is repeated. This quenching method not only recovers the sensible heat of red coke, reduces pollutant emissions, but also improves the quality of coke. Therefore, the CDQ method has been rapidly developed in recent years, and at the same time, the related art personnel have also conducted extensive research on the coke oven.

Coke ovens include conventional vertical coke ovens and horizontal coke ovens. Among them, the position of the carbonization chamber of the vertical coke oven is higher, and when the coke is out, the height difference between the red coke and the coke cup containing the red coke is large, so that the distance and time of the red coke falling to the coke tank are long. , which makes it easy to produce large pollution and waste heat when coking. Although it is possible to reduce environmental pollution by means of a coke dust removal device, it leads to an increase in the manufacturing cost and operating cost of the device. The horizontal coke oven has a relatively simple furnace structure, and the height of the carbonization chamber is lower than that of the vertical coke oven, so that the bottom end of the coke opening is even slightly lower than the top end of the coke drum, and the red coke output from the horizontal coke oven is A complete coke cake of the same length as the carbonization chamber, these disadvantages make the red coke output from the horizontal coke oven not directly loaded into the coke drum.

As we all know, the coke tank is the only charging device used in the coke oven dry quenching. The coke cake can not be placed in the coke tank, which means that the red coke charred by the horizontal coke oven can not be quenched by dry quenching. focal. Therefore, there is a need to develop a new charging device for charging the red coke produced by the horizontal coke oven into a dry quenching furnace for dry coke quenching. Summary of the invention

A heat recovery coke oven dry quenching device is provided, which can directly charge the red coke charred in the horizontal coke oven into the dry quenching furnace to quench the coke, and also reduce heat loss and environmental pollution.

The technical solution adopted to solve the above technical problems is to provide a heat recovery coke oven dry quenching device, comprising a charging device and a dry extruding furnace, wherein the charging device is used for loading red coke output from the coke oven In the dry quenching furnace, the charging device comprises a hoisting device for holding red focus outputted from the coke oven, and a holding device for holding the red coke The holding device is lifted to the top of the dry extruding furnace, and the empty holding device is placed on the coke truck from the top of the dry extruding furnace, and the holding device is a coke box of a box structure.

Preferably, the coke box comprises an upper wall plate, a lower wall plate and two side wall plates, the upper wall plate and the lower wall plate are oppositely disposed, and the two side wall plates are disposed on the upper wall plate And the two sides of the lower wall panel are connected to the upper wall panel and the lower wall panel, and the upper wall panel, the lower wall panel and the two side wall panels enclose a box body which is open at both ends.

Preferably, a shielding wall is further disposed at each of the two open ends of the box to shield the two openings of the box.

Preferably, the red focus output from the coke oven is directly loaded into the coke box in a shape when coking.

Preferably, the hoist is a hoist or a crane.

Preferably, the utility model further comprises a coke box, a discharge auxiliary unit and a charging auxiliary unit, wherein the coke box is supported by the bracket and disposed above the dry quenching furnace, and the lifting machine can be the coke box Placed on the coke box table;

The discharge assisting unit is configured to pour red focus in the coke box to a position of the furnace mouth of the dry extinction furnace;

The charging auxiliary unit is disposed at a mouth of the dry extruding furnace for loading the red coke Into the dry extinguishing furnace.

Preferably, the unloading auxiliary unit is a guiding groove, and the guiding groove is disposed between the furnace mouth of the dry extinguishing furnace and the coke box, and one end thereof is disposed below an open end of the coke box, The other end is disposed above the mouth of the dry extruding furnace.

Preferably, the unloading auxiliary unit is a mobile unit, the moving unit is disposed at a bottom of the coke box, or is disposed on the coke box, and the coke box along the coke box is The stage is moved such that an open end of the coke box is located above the mouth of the dry extruding furnace.

Preferably, the unloading auxiliary unit is a guiding box, and the guiding box is fixed on the coke box, one end of which is adjacent to the coke box, and the other end is disposed above the mouth of the dry quenching furnace .

Preferably, the charging auxiliary unit comprises a cloth unit,

The cloth unit is a rotating coke, the coke opening of the rotating coke is disposed at a bottom of the rotating coke and offset from a center line of the rotating coke, the coke opening of the rotating coke and the Dry out the furnace mouth; or

The cloth unit is a distributor, and a coke opening of the distributor is opposite to the dry furnace mouth; or

The cloth unit comprises a hopper and a bell, the hopper is disposed above the dry quenching furnace, and the bell is disposed at a mouth of the dry quenching furnace and extends into a furnace mouth of the dry quenching furnace.

Preferably, the charging auxiliary unit further comprises a crusher for breaking the red coke into a desired blockiness, the crusher being disposed between the discharge auxiliary unit and the charging auxiliary unit .

Preferably, the discharge assisting unit further comprises a push-focusing device, comprising a push-focusing rod and a push-focus plate fixed at one end of the push-focusing rod, the push-focusing device pushing the red focus into the charging Within the auxiliary unit.

Preferably, a focus car for transporting the coke box from the coke oven to the elevator position is further included, and the coke car can be placed at least one of the coke boxes. A dusting device for the pollution caused by the environment. The invention has the following beneficial effects:

The heat recovery coke oven dry quenching device provided by the invention adopts the charging device provided by the invention, and uses the coke box to hold the red coke. Therefore, it not only solves the red coke which is carbonized in the horizontal coke oven but cannot be dry extruded. The problem of coke, and the use of coke box coke can reduce the coke scattering during the coke process, thereby reducing, or even producing only a small amount of dust, and thus no need to set the coke dust removal device at the coke point of the coke oven, thereby reducing heat Recycling coke oven manufacturing and operating costs; at the same time reducing the exposure time of red coke in the air, thereby reducing heat loss. DRAWINGS

1 is a schematic structural view of a CDQ device provided by the present invention;

2 is a schematic structural view of a coke box provided by the present invention;

3 is a schematic structural view of a modified embodiment of the CDQ device according to the present invention; and FIG. 4 is a schematic structural view of another modified embodiment of the CDQ device according to the present invention. detailed description

In order to enable those skilled in the art to better understand the technical solution of the present invention, the heat recovery coke oven dry quenching device provided by the present invention will be described in detail below with reference to the accompanying drawings.

1 is a schematic structural view of a heat recovery coke oven dry quenching device provided by the present invention. Referring to FIG. 1 , the heat recovery coke oven dry quenching device provided by the embodiment includes a charging device, a dry extinguishing furnace, a primary dust collector 2, a boiler 3, a secondary dust remover 4, a circulating fan 5, and a heat exchanger 6. . An annular duct 7 is provided at an upper position of the furnace body of the dry quenching furnace 1, and a discharge device 10 and a circulating gas inlet port 11 are provided at the bottom of the furnace body. The dry extruding furnace 1 is connected to the air inlet of the primary precipitator 2 through the annular air duct 7, and the air outlet of the primary precipitator 2 is connected to the input port of the boiler 3; the output port of the boiler 3 is connected to the air inlet of the secondary precipitator 4, The air outlet of the secondary dust remover 4 is connected to the intake port of the circulation fan 5, the exhaust port of the circulation fan 5 is connected to the input port of the heat exchanger 6, and the output port of the heat exchanger 6 is connected to the circulating gas input port 11. The charging device includes a hoist 13 and a coke box 14. Among them, the coke box 14 is used to hold the red focus (ie, the coke cake) output from the coke oven. The hoist 13 is used to lift the coke box 14 to the top of the dry quenching furnace 1, or the empty coke box 14 is placed on the coke car from the top of the dry quenching furnace 1. The hoist 13 can be a hoist, crane or other lifting equipment.

The coke box 14 is a holding device for holding red coke, and a box-type coke box is used. Fig. 2 is a schematic structural view of a coke box provided by the present invention. Referring to FIG. 2, the coke box 14 includes an upper wall plate 141, a lower wall plate 142, and two side wall plates 143. The upper wall plate 141 and the lower wall plate 142 are oppositely disposed, and the two side wall plates 143 are disposed on the upper wall plate 141. And the two sides of the lower wall plate 142 are connected to the upper wall plate 141 and the lower wall plate 142. The upper wall plate 141, the lower wall plate 142 and the two side wall plates 143 enclose a box body which is open at both ends. The inner contour of the coke box is larger than the shape of the red coke that is beaten in the coke oven, that is, the inner contour of the coke box is slightly larger than the shape of the coke cake. A hook (not shown) is also provided on the coke box 14 to lift the coke box 14. The hook may be provided on the upper wall 141 or the side wall panel 143, or may be provided at another position where the coke box 14 can be lifted.

Relative to the coke drum, the height of the bottom of the coke box 14 placed on the coke truck is substantially the same as the height of the bottom of the carbonization chamber. Therefore, the red coke output from the carbonization furnace can be directly pushed into the coke box 14 in the form of a coke cake. This can reduce the contact of red coke with air, thereby reducing the loss of heat; and the coke cake can be loaded into the coke box 14 without being broken, so that the dust during the defocusing process can be minimized, thereby eliminating the coke. Dust removal equipment, which not only can reduce the manufacturing cost and floor space of the heat recovery coke oven dry quenching device, but also can reduce the operating cost of the heat recovery coke oven dry quenching device and improve the efficiency of the enterprise.

In this embodiment, a shielding wall 144 is provided at each of the two open ends of the casing, i.e., at the two open ends of the coke box 14. The shielding wall 144 not only reduces the loss of heat, but also prevents the red focus from falling out of the coke box 14 after the coke cake is scattered, thereby improving the safety of the coke cake during the movement. In the present embodiment, in order to facilitate the opening and closing of the shielding wall panel 144, an automatic control unit is provided to control the opening and closing of the shielding wall panel 144 by the automatic control unit.

In addition, in the actual coke process, the coke box 14 placed on the coke car cannot be close to the charcoal. The furnace outlet, that is, there is a certain distance between the coke box 14 and the carbonization furnace outlet, and the shielding wall 144 can overlap the coke box 14 and the carbonization furnace outlet, so that the coke cake can be smoothly pushed from the carbonization chamber to the coke box. 14.

The coke box 14 containing the red focus is lifted by the elevator 13 to the top of the dry extruding furnace 1, and then the red focus is pushed out from the coke box 14 by a push-focus device (not shown), or the principle of the coke box 14 is raised. The side of the furnace mouth is dried to tilt the coke box 14 downward toward the side of the dry quenching furnace to pour the red coke into the dry quenching furnace 1.

The charging device provided by the embodiment adopts a box-type coke box as a holding device for containing red coke, and the red coke outputted from the horizontal coke oven can be directly loaded into the coke box, and then loaded into the coke box. Into the dry furnace. Therefore, the charging device provided in the embodiment solves the problem that the red coke carbonized in the horizontal coke oven cannot adopt the dry quenching, and the coke box can be used to reduce the coke scattering during the coking process, thereby reducing, even Only a small amount of dust is generated, so that there is no need to set up a coke dust removal device at the coke point of the coke oven, thereby reducing the manufacturing and running cost of the heat recovery coke oven; at the same time, reducing the exposure time of the red coke in the air, thereby reducing heat Loss.

The charging device provided in this embodiment is further provided with a coke box table 21, a discharge auxiliary unit 31, and a charging auxiliary unit 41. Among them, the coke box table 21 is supported by a bracket (not shown) and disposed above the dry quenching furnace 1, and the hoisting machine 13 places the coke box 14 on the coke box table 21.

It should be noted that the hoisting machine 13 can be disposed above the coke box table 21, and the hoisting box 14 is placed on the coke box table 21 by the hoisting machine 13. This arrangement mode requires high strength of the concentrating box table 21. Of course, the hoist 13 can also be placed on the ground and the hoist 13 exerts an upward force by means of pulleys or other steering members disposed above the coke box table 21.

The discharge assisting unit 31 is for pouring the red focus in the coke box 14 to the position of the mouth of the dry quenching furnace 1. The unloading auxiliary unit 31 of the embodiment is a guiding groove, and the guiding groove is disposed in the dry extruding furnace 1 furnace mouth and the coke box

14 is disposed at one end of one of the open ends of the coke box and at the other end above the mouth of the dry quenching furnace. The red coke discharged from the coke box 14 can enter the charging auxiliary unit by means of the guiding groove

41 inside. The charging auxiliary unit 41 is disposed at the position of the dry extruding furnace 1 for loading red coke into the dry quenching furnace 1. The charging auxiliary unit 41 includes a distributing unit 42 and a crusher 413. The distributing unit 42 includes a hopper 411 and a bell 412. The hopper 411 is disposed above the dry extruding furnace 1, and the bell 412 is disposed at the position of the dry extruding furnace 1 and extends. Into the dry furnace 1 furnace mouth. A crusher 413 is disposed between the hopper 411 and the fill bell 412 for breaking the red coke into the desired block.

The unloading auxiliary unit 31 of the embodiment further includes a pushing device (not shown), which comprises a driving device, a push rod and a push-focus plate fixed at one end of the push rod, and the driving device will be pushed by the push rod The driving force is transmitted to the pusher plate, and the pusher plate pushes the red focus in the coke box 14 out of the coke box 14 and pushes it into the loading auxiliary unit 41.

The specific working process of the hoisting machine 13, the coke box 21, the unloading auxiliary unit 31 and the loading auxiliary unit 41 is as follows: The hoisting machine 13 lifts the coke box 14 to the top of the dry quenching furnace and places it on the coke box table 21, The push-focusing device pushes out the red focus (focal cake) in the coke box 14 out of the coke box 14, and the red coke enters the hopper 411 by means of the coke-slot, and is broken into the required block by the crusher 413, and then uniformly by the material clock 412. It is arranged in the dry extinguishing furnace 1 so that the red focus is uniformly quenched in the furnace.

In this embodiment, a dust removing device 16 is further disposed on the top of the dry extinction furnace 1 to reduce dust generated during the charging process (ie, the red coke moves from the coke box 14 to the dry extinction furnace 1). The resulting dust) is a pollution to the environment.

It should be noted that, in this embodiment, the red focus of the desired block is obtained by the crusher 413. However, the present invention is not limited thereto, and the present invention can also achieve the red focus of the desired block by using the following method, that is, increasing The distance between the unloading auxiliary unit 31 and the charging auxiliary unit 41, in other words, increasing the distance between the lower end of the guiding groove and the hopper, the collision and friction by the falling of the red focus, and the collision with the hopper The red focus of the required block.

3 is a schematic structural view of a modified embodiment of a heat recovery coke oven dry quenching apparatus provided by the present invention. Referring to FIG. 3, as a modified embodiment of the embodiment, the unloading auxiliary unit adopts a moving unit, such as a roller, and the moving unit may be directly disposed at the bottom of the coke box 14, or may be disposed on the coke box 21, the coke box 14 moving on the coke box table 21 by means of the mobile unit, and making the coke box 14 An open end is opposed to the mouth of the dry extruding furnace 1.

The cloth unit 42 adopts a rotating coke tank. The coke opening of the rotating coke tank is disposed at the bottom of the rotating coke drum and deviates from the center line of the rotating coke drum. The coke opening of the rotating coke pot is opposite to the furnace mouth of the dry quenching furnace 1, and the rotating coke is rotated. The red focus is uniformly placed in the dry extinction furnace 1 by the rotation of the can around its center line.

Fig. 4 is a block diagram showing another modification of the heat recovery coke oven dry quenching apparatus according to the present invention. Referring to FIG. 4 , as another modified embodiment of the embodiment, the unloading auxiliary unit adopts a guiding box, and the guiding box is fixed on the coke box 21 , one end of which is adjacent to the coke box 14 , and the red coke can be self-focusing box 14 . Moved into the guide box and the other end is opposite to the mouth of the dry furnace 1.

The cloth unit 42 adopts a distributor, and the exiting opening of the distributor is opposite to the mouth of the dry extinguishing furnace 1, and the red focus can be arranged in the dry extinguishing furnace 1 by means of the distributor.

It is not difficult to understand that the discharge assisting unit and the distributing unit 42 described in the above three embodiments may be combined arbitrarily, that is, the guiding box may be used in combination with a rotating coke or hopper and a material clock, and the moving unit may be coupled with a distributor or a hopper. Used in conjunction with the bell, the coke drum can be used with a rotating coke drum or distributor.

The charging device of this embodiment further includes a coke truck 17 for transporting the coke box 14 from the coke oven to the position of the elevator 3, and the coke truck 17 can be placed at least one coke box 14, preferably two coke boxes 14 can be placed. . This allows the focus truck 17 to retain a position where the empty coke box 14 can be placed during the consignment of the coke box 14 with the red focus, so that the elevator 13 can place an empty coke box 14 in the focus. The car 17 then lifts the coke box 14 with red focus on the coke truck 17 to the coke box table 21, thereby improving the efficiency of use of the coke car 17.

It should be noted that the charging device provided by the present invention can be used not only for charging the red coke carbonized by the horizontal coke oven into the dry quenching furnace 1, but also for charging the red coke charred by the vertical coke oven into the dry quenching furnace. 1 , and also can reduce the generation of dust and heat loss, thereby reducing the manufacturing cost and floor space of the heat recovery coke oven dry quenching device, and also reducing the operating cost of the heat recovery coke oven coke dry quenching device, Improve the efficiency of the company.

The heat recovery coke oven dry quenching device provided in this embodiment uses a coke box to hold red coke, not only The problem that the red coke charred in the horizontal coke oven can not be dry quenching can be solved, and the coke box coke can reduce the coke scattering during the coke process, thereby reducing, or even producing only a small amount of dust, and then in the coke oven The position of the coke outlet does not need to be provided with coke dust removal equipment, thereby reducing the manufacturing and running cost of the heat recovery coke oven, improving the production efficiency of the enterprise; and simultaneously reducing the exposure time of the red coke in the air, thereby reducing the heat loss. It is to be understood that the above embodiments are merely exemplary embodiments employed to explain the principles of the invention, but the invention is not limited thereto. Various modifications and improvements can be made by those skilled in the art without departing from the spirit and scope of the invention. These modifications and improvements are also considered to be within the scope of the invention.

Claims

Claim

A heat recovery coke oven dry quenching device, comprising a charging device and a dry extruding furnace, wherein the charging device is configured to load red coke output from the coke oven into the dry extruding furnace, the charging The apparatus includes a hoisting device for holding red focus outputted from the coke oven, and the hoisting device for lifting the holding device for holding the red focus to a dry extinguishing furnace The top portion and the empty holding device are placed on the coke truck from the top of the dry extruding furnace, wherein the holding device is a box-type coke box.

2 . The heat recovery coke oven dry quenching device according to claim 1 , wherein the coke box comprises an upper wall plate, a lower wall plate and two side wall plates, the upper wall plate and the lower portion The side panels are oppositely disposed, and the two side wall panels are disposed on both sides of the upper and lower wall panels, and are connected to the upper and lower panels, the upper and lower panels, and The two side wall panels enclose a box that is open at both ends.

3. The heat recovery coke oven dry quenching apparatus according to claim 2, wherein a shielding wall is further disposed at each of the two open ends of the casing to open the two openings of the casing. Occlusion.

The heat recovery coke oven dry quenching apparatus according to claim 1, wherein the red focus output from the coke oven is directly loaded into the coke box in a shape when coking.

The heat recovery coke oven dry quenching apparatus according to claim 1, wherein the lifter is a hoist or a crane.

The heat recovery coke oven dry quenching device according to claim 1, further comprising a coke box, a discharge auxiliary unit, and a charging auxiliary unit, wherein The coke box is supported by a bracket and disposed above the dry quenching furnace, and the hoist can place the coke box on the coke box;

The charging auxiliary unit is disposed at a mouth of the dry quenching furnace for loading the red coke into the dry quenching furnace.

The heat recovery coke oven dry quenching device according to claim 6, wherein the discharge assisting unit is a guiding groove, and the guiding groove is disposed at a mouth and a place of the dry extinguishing furnace Between the coke boxes, one end of the coke box is disposed below one open end of the coke box, and the other end is disposed above the mouth of the dry quenching furnace.

The heat recovery coke oven dry quenching device according to claim 6, wherein the discharge assisting unit is a moving unit, the moving unit is disposed at a bottom of the coke box, or is disposed at the bottom On the coke box, the coke box is moved along the coke box by means of the moving unit such that an open end of the coke box is located above the mouth of the dry quenching furnace.

The heat recovery coke oven dry quenching device according to claim 6, wherein the discharge assisting unit is a guiding box, and the guiding box is fixed on the coke box, one end of which is adjacent to The coke box has the other end disposed above the mouth of the dry quenching furnace.

The heat recovery coke oven dry quenching apparatus according to claim 6, wherein the charging auxiliary unit comprises a cloth unit,

The cloth unit is a rotating coke, the coke opening of the rotating coke is disposed at a bottom of the rotating coke and offset from a center line of the rotating coke, the coke opening of the rotating coke and the Dry out the furnace mouth; or The cloth unit is a distributor, and a coke opening of the distributor is opposite to the dry furnace mouth; or

The heat recovery coke oven dry quenching apparatus according to claim 6, wherein the charging auxiliary unit further comprises a crusher for breaking the red focus into a desired blockiness, A crusher is disposed between the discharge assisting unit and the charging auxiliary unit.

The heat recovery coke oven dry quenching device according to claim 6, wherein the discharge assisting unit further comprises a pusher device, comprising a push rod and a push fixed at one end of the push rod a coke plate, the pusher device pushes the red focus into the loading auxiliary unit.

13. The heat recovery coke oven dry quenching apparatus according to claim 1, further comprising a coke car for transporting the coke box from the coke oven to the elevator position, the coke At least one of the coke boxes can be placed in the car.

The heat recovery coke oven dry quenching apparatus according to claim 1, wherein the dust removing device is installed.