Powdery coal dry distillation device

Abstract

The utility model belongs to the technical field of coal chemical industry, and particularly relates to a powdered coal dry distillation device. A powdery coal dry distillation device comprises a sealed dry distillation chamber, the head portion of the sealed dry distillation chamber is connected with a feeding mechanism, the tail portion of the sealed dry distillation chamber is connected with a discharging mechanism, a plurality of volatile matter eduction pipes are evenly distributed on the upper portion of the sealed dry distillation chamber, and the tail ends of the volatile matter eduction pipes are connected with a gas-liquid separator. A dry distillation furnace foundation is arranged at the lower part of the sealed dry distillation chamber, a plurality of hearths are arranged in the sealed dry distillation chamber, the hearths are provided with burners which are communicated with the outside, a plurality of dry distillation furnace flame paths which are distributed in parallel are arranged among the hearths, a flame path cover plate is arranged above the dry distillation furnace flame paths, and a closed-loop scraper conveyor is arranged above the flame path cover plate. According to the utility model, the powdery coal is subjected to dry distillation treatment, so that the problems of discharging and recycling of a large amount of powdery coal are solved, meanwhile, the coal gas quality is improved, hydrogen is conveniently separated from the coal gas, the economic benefit is improved, and further pollution to the environment is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of coal chemical industry, especially relates to a pulverous coal dry distillation device. BACKGROUND

[0002] The coking enterprises in Shanxi, Shaanxi, Inner Mongolia, Ningxia and Xinjiang of China only process 70% of the medium block coal and seed coal in the raw coal produced in these regions, and the remaining 30% of the pulverous coal is sold without processing. The pulverous coal will cause a large amount of energy waste and environmental pollution during use, and also increase the freight pressure of railways and highways, and bring inconvenience to users.

[0003] The existing production coking adopts a straight coking furnace with a length of 9 m, a width of 5 m and a height of 8 m. The block coal and seed coal with a size of 8-150 mm selected are fed into the furnace through the furnace top coal bin, and are combusted and heated to about 650 DEG C in the furnace to form semi-coke by separating volatile matter; the semi-coke is pushed, scraped and conveyed to the crushing section by the belt conveyor, and is crushed into semi-coke particles with a size of less than 30 mm for screening and supplying to users. The separated volatile matter is sent to the purification equipment through the furnace top bridge pipe, and after removing the coal tar, a part is mixed with air to enter the furnace to continue to provide heat for the dry distillation in the furnace, and the remaining part is sent to other sections to be used as fuel. The dry distillation process belongs to the direct heating type, and air is involved in the whole process. The oxygen component in the air causes a part of the fixed carbon to be oxidized and combusted, resulting in the loss of the fixed carbon, and the fixed carbon content in the produced semi-coke is about 80%. At the same time, the nitrogen component in the air forms harmful nitrogen oxides in the furnace, reduces the quality of the coal gas and pollutes the environment. With the further deepening of the integration of coal resources in China and the continuous popularization of large-scale fully mechanized mining equipment, the proportion of the pulverous coal in the produced raw coal is greatly increased, and the proportion of the block coal and seed coal is greatly decreased. This not only causes the raw material supply of the coking enterprises using the block coal and seed coal as raw materials to be tight, but also causes the serious shortage of raw coal in the main coking areas, and the industrial development is affected, and sometimes even seriously declines. At the same time, the pulverous coal is over-supplied, which brings huge inventory pressure to the coal mines and coking enterprises, and to some extent, restricts the development of the local coal chemical industry. SUMMARY

[0004] In view of the above problems, the utility model aims at providing a pulverous coal dry distillation device, which solves the outlet and reuse of a large amount of pulverous coal, improves the quality of the coal gas, facilitates the separation of hydrogen from the coal gas, improves the economic benefits and reduces the further pollution to the environment.

[0005] The utility model discloses a technical scheme lies in: a pulverous coal dry distillation device, including sealed dry distillation chamber, the sealed dry distillation chamber head is connected with the feeding mechanism, the sealed dry distillation chamber tail is connected with the discharge mechanism, the sealed dry distillation chamber upper portion evenly distributes with a plurality of volatile matter lead-out pipe, volatile matter lead-out pipe tip is connected with gas -liquid separator, the sealed dry distillation chamber lower portion is equipped with dry distillation furnace foundation, be equipped with a plurality of hearth in the sealed dry distillation chamber, the hearth is equipped with the burner and the outside intercommunication, be equipped with a plurality of parallel distribution's dry distillation furnace flue between the hearth, the furnace flue top is equipped with the flue cover plate, the flue cover plate top is equipped with closed loop type scraper conveyor.

[0006] The feeding mechanism includes a closed feed bin, the inner wall of the closed feed bin is provided with a feed bin preheating pipe, the lower part of the closed feed bin is provided with a spiral cloth distributing valve, and the lower part of the spiral cloth distributing valve is sealingly connected with the head part of the sealed dry distillation chamber.

[0007] The discharge mechanism includes a first discharge bin and a second discharge bin connected in sequence, the input end of the first discharge bin is sealingly connected with the tail part of the sealed dry distillation chamber, the inner wall of the first discharge bin is provided with a first discharge bin heating pipe, the lower part of the first discharge bin is provided with a first discharge bin electric valve, and the upper part of the first discharge bin is provided with a first discharge bin steam-water adjusting valve and a first discharge bin spray pipe.

[0008] The lower part of the first discharge bin electric valve is sealingly connected with the input end of the second discharge bin, the inner wall of the second discharge bin is provided with a second discharge bin heating pipe, the lower part of the second discharge bin is provided with a second discharge bin electric valve, and the upper part of the second discharge bin is provided with a second discharge bin steam-water adjusting valve and a second discharge bin spray pipe.

[0009] The dry distillation furnace flue is a closed rectangular hollow masonry, and the specific size of the rectangular hollow masonry is 36 m in length, 2 m in width and 0.8 m in height.

[0010] The volatile matter lead-out pipes are arranged in parallel, and the distance between adjacent volatile matter lead-out pipes is 3.6 m.

[0011] The utility model discloses a technical effect lies in: the utility model discloses through the even distribution of the pulverous coal of entering the sealed dry distillation chamber in the flue cover plate, carries out high temperature heating to the pulverous coal through the flue cover plate lower dry distillation furnace flue, and the closed loop type scraper conveyor in the dry distillation chamber is made even speed operation on the flue cover plate, and simultaneously, the pulverous coal on the flue cover plate moves with the scraper conveyor even speed along with the operation, and simultaneously completes the dry distillation process, the top of the dry distillation chamber is evenly distributed with volatile matter lead-out pipe, and the volatile matter lead-out pipe is connected with the gas -liquid separator, and the pulverous coal dry distillation device solves the outlet and reuse of a large amount of pulverous coal, and simultaneously produces a large amount of tail gas with high hydrogen content and easy separation, which can improve economic benefit and reduce environmental pollution.

[0012] Further illustration will be made in combination with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 is a structure front view of the powder coal dry distillation device.

[0014] Fig. 2 is a structure side view of the powder coal dry distillation device.

[0015] Fig. 3 is a structure schematic view of the feeding mechanism.

[0016] Fig. 4 is a structure schematic view of the discharging mechanism.

[0017] Reference signs: 1-sealing dry distillation chamber; 2-flue cover plate; 3-closed loop scraper conveyor; 4-volatilization guide pipe; 5-feeding mechanism; 6-discharging mechanism; 7-gas-liquid separator; 8-dry distillation furnace foundation; 9-dry distillation furnace flue; 10-burner; 11-furnace; 51-feeding bin preheating pipe; 52-closed feeding bin; 53-spiral cloth distribution valve; 61-first stage discharging bin; 62-second stage discharging bin; 63-first stage discharging bin heating pipe; 64-second stage discharging bin heating pipe; 65-first stage discharging bin steam-water regulating valve; 66-second stage discharging bin steam-water regulating valve; 67-first stage discharging bin spray pipe; 68-second stage discharging bin spray pipe; 69-first stage discharging bin electric valve; 70-second stage discharging bin electric valve. DETAILED DESCRIPTION Example 1

[0018] As Figs. 1-4 shown, a powder coal dry distillation device, including a sealing dry distillation chamber 1, the sealing dry distillation chamber 1 head is connected with the feeding mechanism 5, the sealing dry distillation chamber 1 tail is connected with the discharging mechanism 6, the sealing dry distillation chamber 1 upper portion is uniformly distributed with multiple volatilization guide pipes 4, the volatilization guide pipe 4 end is connected with the gas-liquid separator 7, the sealing dry distillation chamber 1 lower portion is equipped with the dry distillation furnace foundation 8, the sealing dry distillation chamber 1 is equipped with multiple furnace 11, the furnace 11 is equipped with the burner 10 and is connected with the outside, the furnace 11 between is equipped with multiple parallel distribution dry distillation furnace flues 9, the dry distillation furnace flue 9 upper portion is equipped with the flue cover plate 2, the flue cover plate 2 upper portion is equipped with the closed loop scraper conveyor 3.

[0019] The utility model discloses when using, through the coal system, add raw coal into the feeding mechanism 5, start the closed loop type scraper conveyor 3 of the lower part of feeding mechanism 5, and the closed loop type scraper conveyor 3 scrapes the powdered coal and takes the powdered coal into the fire way cover plate 2 above the sealed dry distillation chamber 1, and makes uniform motion on the fire way cover plate 2 from beginning to end, 3, after the combustible gas mixes with air and ignites, spray into the hearth 11, and the high-temperature gas passes through the fire way cover plate 2 of dry distillation furnace fire way 9, so that the temperature in the dry distillation chamber reaches 650 DEG C, and the volatile component separated out in the process of uniform motion of the powdered coal is guided out through the top dry distillation volatile matter guide-out pipe 4 of the sealed dry distillation chamber 1, and the clean coal is fully carbonized and formed and is discharged through the cooling of the discharge mechanism 6, and the dry distillation volatile matter enters the gas-liquid separation device 7 after the gas-liquid separation after the dry distillation volatile matter through the volatile matter guide-out pipe 4, and the liquid part after separation enters the oil-water separation tank and separates the by-product coal tar, and the gaseous part after separation, the dry distillation coal gas after purification, enters the hydrogen separation device and prepares hydrogen, the utility model discloses the powdered coal dry distillation device solves the outlet and reuse of a large number of powdered coal, and simultaneously produces a large number of tail gas with high hydrogen content and easy separation, which can improve economic benefit and reduce environmental pollution. Example 2

[0020] On the basis of example 1, preferably, the feeding mechanism 5 includes a closed feeding bin 52, the inner wall of the closed feeding bin 52 is provided with a feeding bin preheating pipe 51, the lower part of the closed feeding bin 52 is provided with a spiral distributing valve 53, and the lower part of the spiral distributing valve 53 is sealingly connected with the head part of the sealed dry distillation chamber 1.

[0021] When the closed loop type scraper conveyor 3 starts to act, the effective height of the raw coal in the closed feeding bin 52 is always kept above three fourths of the bin, the closed loop type scraper conveyor 3 moves at a constant speed in the sealed dry distillation chamber 1, the spiral distributing valve 53 is in a normally open state during normal operation, and the feeding bin preheating pipe 51 is in an open state, compared with the prior art in which the raw coal is directly put into the sealed dry distillation chamber by opening a coal discharge valve, the problem that the coal gas in the sealed dry distillation chamber easily overflows to the furnace top space through the gaps between the lump coals, causing safety hazards, wasting energy and polluting the environment, is effectively avoided. Example 3

[0022] On the basis of example 1 or example 2, preferably, the discharge mechanism 6 includes a first discharge bin 61 and a second discharge bin 62 connected in sequence, the input end of the first discharge bin 61 is sealingly connected with the tail part of the sealed dry distillation chamber 1, the inner wall of the first discharge bin 61 is provided with a first discharge bin heating pipe 63, the lower part of the first discharge bin 61 is provided with a first discharge bin electric valve 69, and the upper part of the first discharge bin 61 is provided with a first discharge bin steam-water adjusting valve 65 and a first discharge bin spray pipe 67.

[0023] The utility model discloses use when open the electric valve 69 of one section of discharge bin between one section gas seal gas extinguishing type discharge bin 61 and two section gas seal gas extinguishing type discharge bin 62, the hot clean coal that seals dry distillation chamber 1 tail part discharges falls into two section gas seal gas extinguishing type discharge bin 62, when two section gas seal gas extinguishing type discharge bin 62 clean coal material is stacked to three fourths height, close one section discharge bin electric valve 69, and the hot clean coal falls into one section gas seal gas extinguishing type discharge bin 61, opens one section gas seal gas extinguishing type discharge bin 61 top one section discharge bin steam water regulating valve 65, makes one section gas seal gas extinguishing type discharge bin 61 always keep positive pressure state, and gap opens one section discharge bin spray pipe 67, and the clean coal material temperature is reduced to below 150 DEG C. Example 4

[0024] In the embodiment, preferably, the one section discharge bin electric valve 69 below is sealedly connected with the input end of the two section discharge bin 62, the inner wall of the two section discharge bin 62 is equipped with two section discharge bin heating pipe 64, the lower part of the two section discharge bin 62 is equipped with two section discharge bin electric valve 70, and the upper part of the two section discharge bin 62 is equipped with two section discharge bin steam water regulating valve 66 and two section discharge bin spray pipe 68.

[0025] The utility model discloses use when open the electric valve 69 of one section of discharge bin between one section gas seal gas extinguishing type discharge bin 61 and two section gas seal gas extinguishing type discharge bin 62, the hot clean coal that seals dry distillation chamber 1 tail part discharges falls into two section gas seal gas extinguishing type discharge bin 62, when two section gas seal gas extinguishing type discharge bin 62 clean coal material is stacked to three fourths height, close one section discharge bin electric valve 69, and the hot clean coal falls into one section gas seal gas extinguishing type discharge bin 61, opens one section gas seal gas extinguishing type discharge bin 61 top one section discharge bin steam water regulating valve 65, makes one section gas seal gas extinguishing type discharge bin 61 always keep positive pressure state, and gap opens one section discharge bin spray pipe 67, and the clean coal material temperature is reduced to below 150 DEG C. Example 5

[0026] In the embodiment, preferably, the dry distillation furnace flue 9 is a closed rectangular hollow masonry, and the specific size of the rectangular hollow masonry is 36m in length, 2m in width and 0.8m in height.

[0027] The flue 3 is a closed rectangular hollow masonry, which is convenient for construction and is conducive to fully utilizing the heat of high-temperature gas. Embodiment 6

[0028] In this embodiment, on the basis of Embodiment 1 or Embodiment 5, preferably, the volatile matter guide pipes 4 are arranged in parallel, and the distance between adjacent volatile matter guide pipes 4 is 3.6 meters.

[0029] The volatile matter guide pipes 4 are arranged in parallel, and the distance between adjacent volatile matter guide pipes 4 is 3.6 meters, so that the dry distillation volatile matter can quickly enter the gas-liquid separation device 7 for gas-liquid separation.

[0030] The working principle of the utility model is as follows: during operation, raw coal is added into the feeding mechanism 5 through the coal feeding system; the closed-loop scraper conveyor 3 located at the lower part of the feeding mechanism 5 is started, and the closed-loop scraper conveyor 3 scrapes the powdery coal to carry the powdery coal onto the top of the fireway cover plate 2 of the sealed dry distillation chamber 1, and the powdery coal moves at a constant speed from the beginning to the end on the fireway cover plate 2; after the combustible gas is mixed with air and ignited, it is sprayed into the hearth 11, high-temperature gas passes through the fireway cover plate 2 of the dry distillation furnace fireway 9, so that the temperature in the dry distillation chamber reaches 650 DEG C; the volatile matter separated out in the process of the powdery coal moving at a constant speed is guided out through the top dry distillation volatile matter guide pipe 4 of the sealed dry distillation chamber 1, clean coal is formed by full carbonization, and the clean coal is discharged from the discharge mechanism 6 after cooling; the dry distillation volatile matter enters the gas-liquid separation device 7 for gas-liquid separation after passing through the volatile matter guide pipe 4; the liquid part after separation enters the oil-water separation tank to separate out by-product coal tar; the gaseous part after separation, the dry distillation gas after purification, enters the hydrogen separation device to prepare hydrogen.

[0031] The above is only a preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A powdered coal dry distillation apparatus, characterized in that: The application relates to a sealed dry distillation chamber (1) which is connected with a feeding mechanism (5) at the head, connected with a discharging mechanism (6) at the tail, uniformly provided with a plurality of volatile matter guide pipes (4) at the upper portion, connected with a gas-liquid separator (7) at the tail end, provided with a dry distillation furnace base (8) at the lower portion, provided with a plurality of furnace chambers (11) in the sealed dry distillation chamber (1), provided with a burner (10) in communication with the outside world, provided with a plurality of dry distillation furnace flues (9) which are parallelly distributed between the furnace chambers (11), provided with a flue cover plate (2) above the dry distillation furnace flues (9), and provided with a closed-loop scraper conveyor (3) above the flue cover plate (2).

2. The apparatus for dry distillation of powdered coal according to claim 1, wherein: The feeding mechanism (5) comprises a closed feeding bin (52), the inner wall of the closed feeding bin (52) is provided with a feeding bin preheating pipe (51), the lower portion of the closed feeding bin (52) is provided with a spiral distributing valve (53), and the lower portion of the spiral distributing valve (53) is sealingly connected with the head of the sealed dry distillation chamber (1).

3. The apparatus for dry distillation of powdered coal according to claim 1, wherein: The discharging mechanism (6) comprises a first discharging bin (61) and a second discharging bin (62) which are sequentially connected, the input end of the first discharging bin (61) is sealingly connected with the tail of the sealed dry distillation chamber (1), the inner wall of the first discharging bin (61) is provided with a first discharging bin heating pipe (63), the lower portion of the first discharging bin (61) is provided with a first discharging bin electric valve (69), and the upper portion of the first discharging bin (61) is provided with a first discharging bin steam-water adjusting valve (65) and a first discharging bin spraying pipe (67).

4. The apparatus for dry distilling pulverized coal according to claim 3, wherein: The lower portion of the first discharging bin electric valve (69) is sealingly connected with the input end of the second discharging bin (62), the inner wall of the second discharging bin (62) is provided with a second discharging bin heating pipe (64), the lower portion of the second discharging bin (62) is provided with a second discharging bin electric valve (70), and the upper portion of the second discharging bin (62) is provided with a second discharging bin steam-water adjusting valve (66) and a second discharging bin spraying pipe (68).

5. The apparatus for dry distillation of pulverized coal according to claim 1, wherein: The dry distillation furnace flue (9) is a closed rectangular hollow masonry, the specific size of the rectangular hollow masonry is 36m in length, 2m in width and 0.8m in height, and the sealed dry distillation chamber (1) is a refractory brick sealing space, the specific size of the sealed dry distillation chamber (1) is 36m in length, 2m in width and 1.6m in height.

6. The apparatus for dry distillation of pulverized coal according to claim 1, wherein: The volatile matter guide pipes (4) are parallelly arranged, and the distance between adjacent volatile matter guide pipes (4) is 3.6m.

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