CN218507730U

CN218507730U - Coke oven gas crude deoiling processing device

Info

Publication number: CN218507730U
Application number: CN202120738565.5U
Authority: CN
Inventors: 郭选斌; 崔徐红; 郝晓明; 刘鑫柱; 候昭波; 闫卓强
Original assignee: Hejin Huayuan Gas Co ltd
Current assignee: Hejin Huayuan Gas Co ltd
Priority date: 2021-04-13
Filing date: 2021-04-13
Publication date: 2023-02-21
Anticipated expiration: 2031-04-13

Abstract

The utility model relates to the technical field of coke oven gas purification equipment, in particular to a crude deoiling treatment device for coke oven gas; the technical scheme includes that the oil remover comprises a washing pump, a circulating pump and an oil remover, wherein a first spraying group, a second spraying group, a first demister, a third spraying group, a second demister and a fourth spraying group are arranged in the oil remover from bottom to top, the first spraying group is connected with a circulating water washing inlet, the first demister comprises a waveform blade and a support frame, the second spraying group and the third spraying group are connected with a first demister washing port, the fourth spraying group is connected with a second demister washing port, the spraying heads of the first spraying group, the third spraying group and the fourth spraying group face downwards, the spraying heads of the second spraying group face upwards, and the second demister is a net-shaped structure woven by fibers; solves the problems of lower working efficiency and larger occupied area caused by frequent maintenance of a crude deoiling and decalcification tower in the purification process of the coke-oven gas at present.

Description

Coke oven gas crude deoiling processing device

Technical Field

The utility model belongs to the technical field of coke oven gas purification equipment, concretely relates to coke oven gas crude deoiling processing apparatus.

Background

China is a main production place of coke in the world, coke-oven gas is combustible gas (namely a byproduct in the coke production process) obtained as a byproduct in the coal coking process, at present, the coke-oven gas in China is mainly used for synthesizing methanol, LNG, liquid ammonia and the like, but the coke-oven gas contains tar, naphthalene and other impurities which need to be removed before the synthesis process.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes prior art's is not enough, provides a coke oven gas deoiling processing apparatus, has solved the problem that the maintenance of present coke oven gas purification in-process crude deoiling decalcification tower frequently leads to that work efficiency is lower and area is great.

In order to achieve the purpose, the utility model discloses a realize through following technical scheme:

the coke oven gas crude deoiling treatment device comprises a washing pump, a circulating pump and an oil remover, wherein a circulating water washing inlet, a first demister washing port and a second demister washing port are formed in the oil remover, the circulating pump is connected with the circulating water washing inlet, the washing pump is connected with the first demister washing port and the second demister washing port, the oil remover is provided with a coke oven gas inlet and a water outlet, a first spraying group, a second spraying group, a first demister, a third spraying group, a second demister and a fourth spraying group are arranged in the oil remover from bottom to top, the first spraying group is connected with the circulating water washing inlet, the first demister comprises a corrugated blade and a support frame, the second spraying group and the third spraying group are connected with the first demister washing port, the fourth spraying group is connected with the second demister washing port, the spraying heads of the first spraying group, the third spraying group and the fourth spraying group face downwards, the spraying head of the second spraying group faces upwards, and the second spraying group is of a demister structure woven by fibers.

Furthermore, the lower part of the oil remover is also provided with an inspection port, an overflow port and a liquid level meter port.

Furthermore, the circulating pump quantity is 2, and parallelly connected the setting, the quantity of flush pump is 2, and parallelly connected the setting.

Furthermore, the direction of the spray headers of the second spray group and the third spray group is inclined upwards, the angle is 45-90 degrees, the angle of each spray header is different, the spray headers of the second spray group and the third spray group are arranged on a disc base, and the disc base is connected with a motor through a driving shaft.

The utility model discloses produced beneficial effect does for prior art:

the utility model discloses an adopt cyclic water utilization such as absorption + washing, in order to reach the desorption tar, the purpose of naphthalene, be equipped with first spray group from bottom to top in the degreaser, the second sprays the group, first defroster, the third sprays the group, the second defroster, the fourth sprays the group, wherein first spray group is preliminary washing coke oven gas, the second sprays group and the third sprays the group and uses jointly to wash first defroster, first defroster is because ring vane's setting, the washing method of general direct injection is not thorough, therefore set up upper and lower two sets of sprayers, and set up multi-angle shower nozzle, rotation through the disc can wash ring vane multi-angle transformation, the sparge water can further be used for first spray group to spray through the circulating pump, water resources have been practiced thrift, this device has avoided causing environmental pollution and need to change the adsorbent and cause the system parking annually because of steam heating when adsorbent regeneration, reduce unnecessary economic loss, and the same processing tolerance compares in the deoiling decalcification tower and reduces area about 3/4.

Drawings

The invention will be further described with reference to the accompanying drawings:

FIG. 1 is a schematic structural view of a crude deoiling treatment device for coke oven gas of the present invention;

fig. 2 is a schematic structural view of the oil remover of the present invention;

FIG. 3 is a schematic structural view of a first demister according to the present invention;

in the figure: 1-a washing pump; 2-a circulating pump; 3-oil remover; 4-inlet of coke oven gas; 5, a water outlet; 6-circulating water washing inlet; 7-a first demister flushing port; 8-a second demister flushing port; 9-a first spray group; 10-a second spray group; 11-a first demister; 12-a third spray group; 13-a second demister; 14-a fourth spray group; 15-wave blade; 16-a support frame; 17-outlet of coke oven gas; 18-inspection port; 19-overflow port; 20-liquid level meter port.

Detailed Description

In order to make the technical problem, technical scheme and beneficial effect that the utility model will solve more clearly understand, combine embodiment and attached drawing, it is right to go on further detailed description the utility model discloses. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solution of the present invention is described in detail below with reference to the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

As shown in fig. 1-3, the present embodiment provides a coke oven gas crude deoiling treatment device, which comprises a washing pump 1, a circulating pump 2, and an oil remover 3, wherein the oil remover 3 is provided with a circulating water washing inlet 6, a first demister 11 washing port 7, and a second demister 13 washing port 8, the circulating pump 2 is connected with the circulating water washing inlet 6, the washing pump 1 is connected with the first demister 11 washing port 7 and the second demister 13 washing port 8, the oil remover 3 is provided with a coke oven gas inlet 4 and a water outlet 5, the oil remover 3 is internally provided with a first spraying group 9, a second spraying group 10, a first demister 11, a third spraying group 12, a second demister 13, and a fourth spraying group 14 from bottom to top, the first spraying group 9 is connected with the circulating water inlet 6, the first demister 11 comprises a corrugated blade 15 and a support frame 16, the second spraying group 10, and the third spraying group 12 are connected with the first demister 11 washing port 7, the fourth spray group 14 is connected with the second demister 13 flushing port 8, the first spray group 9, the third spray group 12, the fourth spray group 14 has a downward spray head direction, the second spray group 10 has an upward spray head direction, the second demister 13 is a net-shaped structure woven by fibers, the lower part of the oil remover 3 is also provided with an inspection port 18, an overflow port 19 and a liquid level meter port 20, the number of circulating pumps 2 of the device is 2, the circulating pumps are arranged in parallel, the number of flushing pumps 1 is 2, the flushing pumps are arranged in parallel, the spray heads of the second spray group 10 and the third spray group 12 are obliquely upward, the angle is 45-90 degrees, the angle of each spray head is different, the spray heads of the second spray group 10 and the third spray group 12 are arranged on the disc base, and the disc base is connected with a motor through a driving shaft.

The utility model discloses a working process does: 8 ten thousand Nm3/h coke oven gas from a coking battery limit zone at about 30 ℃ and 0.008MPaG enters an oil remover 3 from the lower part, spray water is directly sprayed against coke oven gas in a countercurrent manner by a circulating pump 2 in the oil remover 3, the spray water is used for primarily washing coke oven dust in the gas, ammonia evaporation wastewater at the temperature of more than 60 ℃ is adopted as washing water, the coke oven gas further passes through a first demister 11, the first demister 11 is provided with a wave-shaped blade 15 according to the flow characteristic of the gas flow, the gas flow is deviated and separated in the wave-shaped blade 15, separated liquid drops impact on the blade and form a liquid film on the surface of the blade, and the liquid film flows downwards under the action of gravity, finally breaks away from the first demister 11 and falls into the lower part of the oil remover 3; the coke oven gas passing through the first demister 11 enters a second demister 13, the second demister 13 is made of a loose mesh structure woven by ultrafine fibers, the specific surface area is large, and the coagulation effect is realized on fine dust-containing fog drops, so that the extremely high separation efficiency is brought, and the structural design of the second demister has the characteristics of easiness in cleaning, corrosion resistance of materials, high temperature resistance and the like; in order to reduce the gradual accumulation of impurities such as tar dust in the first demister 11 and the second demister 13 and lead to the blockage, the utility model discloses set up the periodic flushing system who comprises second spray group 10, third spray group 12, fourth spray group 14, pressurize through the washer pump 1 and wash the defroster with evaporating ammonia waste water, the dust-laden waste water after washing is as the make-up water of spraying circulating water, unnecessary water is discharged to the outside by circulating water pump, impurities such as tar dust and coke oven gas high accuracy separation, the coke oven gas after deoiling is sent out to the outside from the coke oven gas export 17 at the top of the oil remover 3; the indexes of the coke oven gas before the oil remover 3 are as follows: tar plus dust is less than or equal to 50mg/Nm < 3 >, naphthalene is less than or equal to 300mg/Nm < 3 >, and the indexes after the oil remover 3 are as follows: the tar plus dust is less than or equal to 10mg/Nm < 3 >, and the naphthalene is less than or equal to 200mg/Nm < 3 >.

The above description is further detailed for the present invention with reference to specific preferred embodiments, and it is not considered that the specific embodiments of the present invention are limited thereto, and it will be understood by those skilled in the art that the present invention can be implemented by a plurality of simple deductions or substitutions without departing from the scope of the present invention, and all of them should be considered as belonging to the present invention, which is determined by the appended claims.

Claims

1. The coke oven gas crude deoiling treatment device is characterized by comprising a flushing pump, a circulating pump and an oil remover, wherein the oil remover is provided with a circulating water washing inlet, a first demister washing port and a second demister washing port, the circulating pump is connected with the circulating water washing inlet, the flushing pump is connected with the first demister washing port and the second demister washing port, the oil remover is provided with a coke oven gas inlet and a water outlet, a first spraying group, a second spraying group, a first demister, a third spraying group, a second demister and a fourth spraying group are arranged in the oil remover from bottom to top, the first spraying group is connected with the circulating water washing inlet, the first demister comprises a corrugated blade and a support frame, the second spraying group and the third spraying group are connected with the first demister washing port, the fourth spraying group is connected with the second demister washing port, the spraying heads of the first spraying group, the third spraying group and the fourth spraying group face downwards, the spraying head of the second spraying group faces upwards, and the second spraying group is of a mesh-shaped structure woven by fibers.

2. The coke oven gas crude deoiling treatment device of claim 1, wherein the lower part of the deoiler is further provided with an inspection port, an overflow port and a liquid level meter port.

3. The coke oven gas crude deoiling treatment device of claim 1, wherein the number of the circulating pumps is 2, and the circulating pumps are arranged in parallel, and the number of the flushing pumps is 2, and the flushing pumps are arranged in parallel.

4. The coke oven gas crude deoiling processing device of claim 1, wherein the direction of the spray headers of the second spray group and the third spray group is inclined upwards, the angle is 45-90 degrees, and the angle of each spray header is different, the spray headers of the second spray group and the third spray group are arranged on a disc base, and the disc base is connected with a motor through a driving shaft.