CN218620722U

CN218620722U - Crude gas separation and purification device

Info

Publication number: CN218620722U
Application number: CN202223054499.3U
Authority: CN
Inventors: 徐进; 周礼庆; 姜海潮; 杜冬梅; 王腾辉; 张生龙; 卢俊; 冀淑军
Original assignee: Chinacoal Pingshuo Group Co ltd
Current assignee: Chinacoal Pingshuo Group Co ltd
Priority date: 2022-11-17
Filing date: 2022-11-17
Publication date: 2023-03-14
Anticipated expiration: 2032-11-17

Abstract

The utility model relates to a crude gas separation and purification device, which comprises a crude gas washer and a crude gas separator; the coarse coal gas washer is connected with the coarse coal gas separator; the first output end at the top of the coarse coal-gas separator is connected with a gas-gas heat exchanger; the second output end at the bottom of the coarse coal-gas separator is connected with a coal-gas-water separation device; the coarse coal-gas separator comprises a cylinder; an air inlet pipe is arranged on one side of the cylinder body; the air inlet pipe is inserted into the cylinder body in a downward inclination manner; a second air outlet is formed above the cylinder body; a second water outlet is formed below the cylinder body; a centrifugal tube bundle type separating internal part is vertically fixed in the cylinder body. The utility model discloses utilize centrifugal force separation's principle, the coarse coal gas is from down and go up through centrifugal tube bank formula separation internals in coarse coal gas separator to the realization separates the liquid drop of smuggleing secretly and solid particle's purpose from the coarse coal gas, reduces coal tar and dust and gets into follow-up equipment, realizes the long period high load steady operation of device, reduction production running cost.

Description

Crude gas separation and purification device

Technical Field

The utility model belongs to the technical field of the coal gas chemical industry, in particular to crude gas separation purifier.

Background

In the coal gasification process, the pulverized coal is subjected to gasification reaction in the gasification furnace to generate crude coal gas. Solid particles and liquid drops are carried in the crude gas, wherein the fixed particles are coal dust, and the liquid drops are coal tar. Most of solid particles and liquid drops fall to the bottom of the gasification furnace under the action of self gravity and are discharged out of the gasification furnace from the bottom of the gasification furnace, and a small amount of solid particles and liquid drops enter a subsequent treatment system along with the crude gas for separation, purification and cooling.

In order to separate solid particles carried in the raw gas, a cyclone separator is usually selected for dust removal, the cyclone separator usually has a good separation effect on solid particles with larger particle sizes, and fine solid particles produced during coal dust gasification are difficult to achieve a good separation effect by adopting the cyclone separation device due to the characteristics of small particle sizes and light weight.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a crude gas separation purifier, solid particle and liquid drop smugglied secretly in can the more efficient separation crude gas reduce tar and dust and get into follow-up equipment such as furnace of covariant.

In order to achieve the purpose, the technical scheme adopted by the utility model is a crude gas separation and purification device, which comprises a crude gas washer and a crude gas separator;

the coarse gas scrubber is connected with a coarse gas separator through a pipeline; a first output end at the top of the coarse coal-gas separator is connected with a gas-gas heat exchanger through a pipeline, and a second output end at the bottom of the coarse coal-gas separator is connected with a coal gas-water separation device through a pipeline;

the raw gas washer comprises an inner cylinder and an outer cylinder; one end of the inner cylinder is vertically fixed in the outer cylinder, and the inner cylinder extends upwards out of the outer cylinder; the top of the inner cylinder is provided with an air inlet; the bottom of the inner cylinder is provided with an opening, so that crude gas can enter the outer cylinder conveniently; a plurality of water inlet pipes are horizontally fixed above the outer cylinder in the inner cylinder; the plurality of water inlet pipes are arranged at intervals up and down, and the plurality of water inlet pipes are arranged in a cross manner; the plurality of water inlet pipes extend towards the outer side of the inner cylinder; a plurality of spray heads are fixed below each water inlet pipe;

a first water outlet is formed in the bottom of the outer barrel; a first air outlet is formed in one side of the outer barrel; the height of the first air outlet is higher than that of the bottom of the inner barrel.

Preferably, the coarse gas separator comprises a cylinder; an air inlet pipe is arranged on one side of the cylinder body; the air inlet pipe is obliquely inserted into the cylinder downwards; a second air outlet is formed in the upper part of the cylinder body, and a second water outlet is formed in the lower part of the cylinder body; a centrifugal tube bundle type separation internal part is vertically fixed in the cylinder body.

Preferably, a sealing plate is fixed in the cylinder body; the shrouding seals the barrel, and the height that highly is higher than the intake pipe of shrouding.

Preferably, the bottom of the centrifugal tube bundle type separation internal part and the bottom of the inner barrel are both provided with a fixing part; the fixing part clamps and fixes the centrifugal tube bundle type separation internal part and the inner barrel.

Preferably, the plurality of nozzles are all fixed at two ends of the inner cylinder far away from the overlapping part of the water inlet pipe; and a nozzle is fixed in the middle of the water inlet pipe close to one end of the outer barrel.

The utility model relates to a crude gas separation purifier compares with prior art and has following advantage:

(1) The principle of centrifugal force separation can be utilized, crude gas passes through the internal part of the high-efficiency centrifugal tube bundle type separation from bottom to top in the crude gas separator, so that the purpose of separating liquid drops (coal tar) and solid particles (coal dust) carried in the crude gas is achieved, the separated liquid drops and solid particles are collected together with washing gas water at the bottom of the separator and are sent to the gas water separation device, the coal tar and the dust are reduced to enter subsequent equipment, long-period high-load stable operation of the device is achieved, and production and operation cost is reduced.

(2) The design is simple, easy to use, and low in manufacturing cost.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic cross-sectional view of a raw gas scrubber configuration;

FIG. 3 is a schematic top view of a raw gas scrubber;

FIG. 4 is a schematic sectional view of a coarse coal-gas separator.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-4, a crude gas separation and purification device comprises a crude gas scrubber 1 and a crude gas separator 2;

the output end of the raw gas washer 1 is connected with the input end of the raw gas separator 2 through a pipeline; a first output end at the top of the coarse gas-gas separator 2 is connected with a gas-gas heat exchanger 3 through a pipeline, a second output end at the bottom of the coarse gas-gas separator 2 is connected with a gas-water separation device through a pipeline, coarse gas from a gasification device enters a coarse gas washer 1, the coarse gas is washed by the gas water of the coarse gas washer 1 and then carries gas water, the coarse gas enters the coarse gas-gas separator 2 through the output end of the coarse gas washer 1, the coarse gas is separated in the coarse gas-gas separator 2 and then is introduced into the gas-gas heat exchanger 3 from the first output end at the top for heat exchange, separated liquid drops and solid particles are collected together with the washed gas water and then are sent into the gas-water separation device through the second output end at the bottom, and the liquid drops and the solid particles are separated from the gas-water again;

the raw gas washer 1 comprises an inner cylinder 11 and an outer cylinder 12; one end of the inner cylinder 11 is vertically fixed in the outer cylinder 12, and the inner cylinder 11 extends upwards out of the outer cylinder 12; the top of the inner barrel 11 is provided with an air inlet 13, and crude gas is introduced through the air inlet 13; the bottom of the inner cylinder 11 is opened, so that crude gas can enter the outer cylinder 12 conveniently; a plurality of water inlet pipes 14 are horizontally fixed above the outer cylinder 12 in the inner cylinder 11; the plurality of water inlet pipes 14 are arranged at intervals up and down, and the plurality of water inlet pipes 14 are arranged in a crossed manner; the plurality of water inlet pipes 14 extend towards the outer side of the inner barrel 11; a plurality of spray heads 15 are fixed below each water inlet pipe 14, and the coarse coal gas in the inner barrel 11 is washed;

a first water outlet 16 is formed in the bottom of the outer cylinder 12, the crude gas in the inner cylinder 11 is washed after the gas water in the water inlet pipe 14 is sprayed out through the spray head 15, most of the washed gas water is discharged through the first water outlet 16, and a small amount of gas water is in the crude gas; a first air outlet 17 is formed in one side of the outer cylinder 12; the height of the first gas outlet 17 is higher than that of the bottom of the inner cylinder 11, so that gas water is prevented from entering the first gas outlet 17, after crude gas and gas water in the inner cylinder 11 downwards enter the outer cylinder 12, the crude gas moves upwards and is discharged from the first gas outlet 17, and the gas water falls to the bottom of the outer cylinder 12 and is discharged from the first water outlet 16;

the coarse coal-gas separator 2 comprises a cylinder 21; an air inlet pipe 22 is arranged on one side of the cylinder 21; the air inlet pipe 22 is inserted into the cylinder 21 in a downward inclination manner, so that the washed crude gas is conveniently introduced into the bottom of the cylinder 21; a second air outlet 23 is formed in the upper part of the cylinder 21, a second water outlet 24 is formed in the lower part of the cylinder 21, and liquid drops, solid particles and entrained gas water in the crude gas are discharged; a centrifugal tube bundle type separation internal part 25 is vertically fixed in the cylinder 21, the raw gas passes through the centrifugal tube bundle type separation internal part 25 from bottom to top, the centrifugal tube bundle type separation internal part 25 separates the raw gas from liquid drops, solid particles and entrained gas water in the raw gas, the raw gas is discharged from the upper part of the centrifugal tube bundle type separation internal part 25, and the liquid drops, the solid particles and the entrained gas water are discharged from the lower part due to gravity settling.

In this embodiment, a sealing plate 26 is fixed in the cylinder 21; the sealing plate 26 seals the cylinder 21, and the height of the sealing plate 26 is higher than that of the air inlet pipe 22, so that the crude gas before and after separation is separated.

In this embodiment, the fixing parts 5 are arranged at the bottom of the centrifugal tube bundle type separating internal member 25 and the bottom of the inner barrel 11; the fixing part 5 clamps and fixes the centrifuge tube bundle type separating internal part 25 and the inner barrel 11, so that the centrifuge tube bundle type separating internal part 25 and the inner barrel 11 are vertical.

In this embodiment, the plurality of nozzles 15 are fixed at two ends of the inner barrel 11 away from the overlapping portion of the water inlet pipes 14, wherein the overlapping portion of the water inlet pipes 14 is the overlapping portion caused by the crossing arrangement of the plurality of water inlet pipes 14; a nozzle 15 is fixed in the middle of the water inlet pipe 14 close to one end of the outer cylinder 12, namely the part overlapped with other water inlet pipes 14, so that the nozzle 15 can conveniently spray gas water on the crude gas in the inner cylinder 11.

The utility model discloses application method: the method comprises the steps of introducing crude gas from a gasification device into an inner cylinder 11 from an air inlet 13, introducing the gas water into a water inlet pipe 14, spraying gas water from a spray head 15 of the water inlet pipe 14, washing the crude gas in the inner cylinder 11, introducing the gas water and the crude gas into an outer cylinder 12 from the inner cylinder 11, discharging most of the washed gas water through a first water outlet 16 at the bottom of the outer cylinder 12, discharging a small amount of gas water in the crude gas from a first gas outlet 17 upwards, introducing the gas into an air inlet pipe 22 at one side of a cylinder 21 through a pipeline, introducing the crude gas into a gas-gas heat exchanger 3 through a centrifugal tube bundle type separating internal part 25 from bottom to top, separating liquid drops, solid particles and entrained gas water in the crude gas and the crude gas by the centrifugal tube bundle type separating internal part 25, discharging the crude gas from the upper part of the centrifugal tube bundle type separating internal part 25, then introducing the crude gas into the gas-gas heat exchanger 3 through a second gas outlet 23 for heat exchange, and discharging the liquid drops, the solid particles and the entrained gas water from a second water outlet 24 at the lower part and introducing the gas-water separating device through the pipeline.

Claims

1. A crude gas separation and purification device is characterized by comprising a crude gas scrubber (1) and a crude gas separator (2);

the raw gas washer (1) is connected with a raw gas separator through a pipeline; a first output end at the top of the coarse coal-gas separator (2) is connected with a gas-gas heat exchanger (3) through a pipeline; a second output end at the bottom of the coarse coal-gas separator (2) is connected with a coal gas-water separation device through a pipeline;

the raw gas scrubber (1) comprises an inner cylinder (11) and an outer cylinder (12); one end of the inner cylinder (11) is vertically fixed in the outer cylinder (12), and the inner cylinder (11) extends out of the outer cylinder (12) upwards; the top of the inner barrel (11) is provided with an air inlet (13); the bottom of the inner cylinder (11) is opened; a plurality of water inlet pipes (14) are horizontally fixed above the outer cylinder (12) in the inner cylinder (11); the plurality of water inlet pipes (14) are arranged at intervals up and down, and the plurality of water inlet pipes (14) are arranged in a cross way; the water inlet pipes (14) extend towards the outer side of the inner cylinder (11); a plurality of spray heads (15) are fixed below each water inlet pipe (14); a first water outlet (16) is formed in the bottom of the outer barrel (12); a first air outlet (17) is formed in one side of the outer cylinder (12); the height of the first air outlet (17) is higher than that of the bottom of the inner barrel (11);

the coarse coal-gas separator (2) comprises a cylinder body (21); an air inlet pipe (22) is arranged on one side of the cylinder body (21); the air inlet pipe (22) is inserted into the barrel (21) in a downward inclination manner; a second air outlet (23) is formed above the cylinder body (21); a second water outlet (24) is formed below the cylinder body (21); a centrifugal tube bundle type separating internal member (25) is vertically fixed in the cylinder body (21).

2. The raw gas separation and purification device as claimed in claim 1, wherein a sealing plate (26) is fixed in the cylinder (21); the sealing plate (26) seals the cylinder (21), and the height of the sealing plate (26) is higher than that of the air inlet pipe (22).

3. The raw gas separation and purification device as claimed in claim 1, wherein the bottom of the centrifugal tube bundle type separation internal member (25) and the bottom of the inner cylinder (11) are provided with fixing parts (5); the fixing part (5) clamps and fixes the centrifugal tube bundle type separating internal part (25) and the inner barrel (11).

4. The raw gas separation and purification device according to claim 1, wherein a plurality of nozzles (15) are fixed at two ends of the inner cylinder (11) far away from the overlapping part of the water inlet pipe (14); a nozzle is fixed in the middle of the water inlet pipe (14) close to one end of the outer cylinder (12).