CN214361202U

CN214361202U - Coal gas two-stage low-resistance dust removal equipment

Info

Publication number: CN214361202U
Application number: CN202120442106.2U
Authority: CN
Inventors: 王博; 何素华; 白冰; 王平
Original assignee: Xi'an High Core Purification Equipment Co ltd
Current assignee: Xi'an High Core Purification Equipment Co ltd
Priority date: 2021-03-01
Filing date: 2021-03-01
Publication date: 2021-10-08
Anticipated expiration: 2031-03-01

Abstract

The application discloses gas two-stage low-resistance dust removal equipment which comprises a cylinder body with a closed structure, wherein the cylinder body is sequentially provided with a gas outlet, a spraying section, a purification section, an atomization section, a gas-liquid mixing section and a gas inlet from top to bottom; the purification section comprises a plurality of multi-stage tube bundle dust removal cyclones arranged in parallel in the barrel body, and each multi-stage tube bundle dust removal cyclone comprises a plurality of tube bundle dust removal cyclones which are detachably connected. The problem that current dust collecting equipment exists purification efficiency low, the effect is poor and with high costs when focusing furnace gas removes dust has been solved to this application, and the tube bank dust removal swirler of this application does not have scale deposit and blocks up the risk, does not have electrical equipment, therefore with low costs, the water consumption is little, the operation maintenance is simple. The device has high purification efficiency, and can effectively remove dust in the coke oven gas, thereby ensuring the quality of the coke oven gas and meeting the purification requirement of the coke oven gas at present.

Description

Coal gas two-stage low-resistance dust removal equipment

Technical Field

The application belongs to the technical field of coke oven gas dust removal, and particularly relates to a gas two-stage low-resistance dust removal device.

Background

The coke oven gas is also called coke oven gas, and belongs to high-calorific-value coke oven gas, crude coke oven gas or crude coke oven gas due to a plurality of combustible components. It is characterized by that several kinds of bituminous coals are made into the coking coal, and after the coking coal is undergone the process of high-temp. dry distillation in the coking furnace, at the same time of producing coke and tar product a combustible gas is produced, and is a by-product of coking industry. The coke oven gas can be used as a raw material gas for producing coal chemical products (such as methanol and the like), but before the coke oven gas is used, the dust removal operation must be carried out on the coke oven gas so as to ensure the quality of the coal chemical products. The problems of low purification efficiency, poor effect, high cost and the like exist in the process of dedusting coke oven gas by the existing dedusting equipment, so that the existing dedusting equipment cannot meet the purification requirement of the coke oven gas at present.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a coal gas two-stage low-resistance dust removal device, and solves the problems of low purification efficiency, poor effect, high cost and the like existing in the conventional dust removal device when the existing dust removal device removes dust from coal gas.

The embodiment of the utility model provides a coal gas two-stage low-resistance dust removal device, which comprises a cylinder body with a closed structure, wherein the cylinder body is sequentially provided with a coal gas outlet, a spraying section, a purifying section, an atomizing section, a gas-liquid mixing section and a coal gas inlet from top to bottom;

the purification section comprises a plurality of multi-stage tube bundle dust removal cyclones arranged in parallel in the barrel body, and each multi-stage tube bundle dust removal cyclone comprises a plurality of tube bundle dust removal cyclones which are detachably connected.

Furthermore, the tube bundle dust removal cyclone comprises a cyclone with a tubular structure and two turbofan separators arranged in the cyclone, the middle of the cyclone is a Venturi tube section, a female connector is arranged at the upper end of the cyclone, and a male connector matched with the female connector is arranged at the lower end of the cyclone;

the two turbofan separators are respectively positioned at the upper part and the lower part of the Venturi tube section; the turbofan separator comprises a ring body coaxially arranged with the cyclone, and a plurality of cyclone blades obliquely and uniformly distributed in the circumferential direction of the ring body, wherein one end of each cyclone blade, far away from the ring body, is connected with the inner wall of the cyclone; and a gap for coke oven gas to pass is formed between every two adjacent swirl vanes.

Furthermore, the spraying section comprises a spraying pipe arranged in the cylinder body, the spraying pipe is provided with a plurality of spraying heads, and the spraying range of the spraying heads covers the upper end of the multi-stage tube bundle dedusting cyclone; the water inlet of the spray pipe extends out of the cylinder body.

Further, the atomizing section is including setting up the atomizing pipe in the barrel, be equipped with a plurality of atomizer on the atomizing pipe, the water inlet of atomizing pipe stretches out the barrel.

Further, the gas-liquid mixing section comprises a bubble cap tray disposed within the barrel.

Furthermore, the cylinder is provided with pressure gauges at the side wall of the gas inlet and the purification section.

Furthermore, the bottom of the cylinder body is of a spherical structure or a conical structure, a drain pipe is arranged at the lowest position of the bottom of the cylinder body, and a liquid level meter is arranged on the side wall of the cylinder body below the coal gas inlet.

Further, a skirt is arranged at the lower end of the cylinder, and a base for fixedly mounting the skirt is arranged at the bottom of the skirt; a manhole is arranged on the skirt.

Furtherly, still include the intake pipe, the one end of intake pipe stretches into the inside intermediate position department of barrel, the intake pipe stretches into the inside one end of barrel is the scarf, the direction of scarf sets up, the other end of intake pipe does the coal gas import.

The embodiment of the utility model provides an in one or more technical scheme, following technological effect or advantage have at least:

the embodiment of the utility model provides a coal gas doublestage low resistance dust collecting equipment, this dust collecting equipment is at the during operation, the coke oven gas that waits to purify gets into the barrel from the coal gas import, coke oven gas and atomizing section spun water smoke contact, make the dirt in the coke oven gas absorbed by the water smoke, then the coke oven gas that carries dirt and fog flows upwards in a plurality of multistage tube bank dust removal cyclones, coke oven gas upward flow's in-process, dirt and fog are clear away, coke oven gas continues to flow upwards, the water droplet of spraying section spun is to the dirt and the fog in the coke oven gas that purifying section flows out further absorption, and rely on its gravity to carry dirt and fog to the barrel bottom, the coke oven gas after the purification exports from the coal gas; the single body of the tube bundle dust removal cyclone can be taken out and overhauled individually, the defects of the using function of the conventional dust removal equipment can be completely overcome, and the dust removal effect is good; the utility model discloses a tube bank dust removal swirler does not have the scale deposit and blocks up the risk, does not have electrical equipment, consequently with low costs, the water consumption is little, the operation is maintained simply. The utility model discloses a dust collecting equipment purification efficiency is high, can clear away the dirt in the coke oven gas effectively to guarantee the quality of coke oven gas, satisfied current coke oven gas's purification demand.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a gas two-stage low-resistance dust removal device provided by the embodiment of the utility model.

Fig. 2 is a schematic structural diagram of a tube bundle dust removal cyclone provided in an embodiment of the present invention.

Reference numerals: 1-a cylinder body; 2-a coal gas outlet; 3-spraying section; 31-a spray pipe; 4-a purification section; 41-multistage tube bundle dedusting cyclone; 5-an atomization section; 51-an atomizing tube; 6-gas-liquid mixing section; 7-gas inlet; 8-tube bundle dedusting cyclone; 81-cyclone; 811-a venturi section; 812-a female connection port; 813-male connection port; 82-a turbofan separator; 821-ring body; 822-swirl vanes; 9-a pressure gauge; 10-a sewage draining pipe; 11-a liquid level meter; 12-skirt.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 and 2, the embodiment of the utility model provides a coal gas doublestage low resistance dust collecting equipment, including enclosed construction's barrel 1, barrel 1 has set gradually coal gas export 2, spray section 3, purification section 4, atomization section 5, gas-liquid mixture section 6 and coal gas import 7 from last to down.

The purification section 4 comprises a plurality of multi-stage tube bundle dedusting cyclones 41 arranged in parallel in the cylinder 1, and each multi-stage tube bundle dedusting cyclone 41 comprises a plurality of tube bundle dedusting cyclones 8 which are detachably connected.

It should be noted that the barrel 1 includes an upper barrel and a lower barrel, and the upper barrel and the lower barrel are connected by a barrel flange. The multi-stage tube bundle dust removal cyclones 41 are fixed inside the barrel 1 through the orifice plate, the orifice plate is provided with a plurality of mounting holes which are in one-to-one correspondence with the multi-stage tube bundle dust removal cyclones 41, and the orifice plate can also avoid the problem of low dust removal efficiency caused by the fact that coke oven gas passes through gaps among the multi-stage tube bundle dust removal cyclones 41. The spraying section 3 is used for spraying water drops, and the atomizing section 5 is used for spraying water mist. Each multi-stage tube bundle dust removal cyclone 41 is connected by a plurality of tube bundle dust removal cyclones 8, and therefore the equipment that can adapt to multiple dust removal demands is strong in practicability by changing the number and specification of the tube bundle dust removal cyclones 8 in the multi-stage tube bundle dust removal cyclone 41.

Coke oven gas to be purified enters the cylinder 1 from the gas inlet 7, the coke oven gas, water mist sprayed from the atomizing section 5 and water drops falling from the spraying section 3 are fully contacted in the gas-liquid mixing section 6 and generate mass and heat exchange, so that dust in the coke oven gas is fully contacted with the water mist and the water drops and is absorbed by the water mist and the water drops, the water drops absorbing the dust fall, the water mist absorbing the dust flows upwards, and the atomizing section 5 is arranged so that the multistage tube bundle dust removal cyclone 41 can separate the dust and the mist from the gas by utilizing the centrifugal effect in the subsequent operation. The coke oven gas carrying dust and fog flows upwards in the multi-stage tube bundle dedusting cyclones 41, the dust and fog are removed in the process of the upward flow of the coke oven gas, the coke oven gas continues to flow upwards, water drops sprayed out of the spraying section 3 further adsorb the dust and fog in the coke oven gas flowing out of the purifying section 4, the dust and fog are carried to the bottom of the cylinder 1 by means of the gravity of the dust and fog, and the purified coke oven gas is output from the gas outlet 2.

As shown in fig. 2. The tube bundle dust removal cyclone 8 of the present embodiment includes a cyclone 81 with a tubular structure and two turbofan separators 82 arranged in the cyclone 81, the middle of the cyclone 81 is a venturi tube 811, the upper end of the cyclone 81 is provided with a female connection port 812, and the lower end of the cyclone 81 is provided with a male connection port 813 matched with the female connection port 812.

Two of the turbofan separators 82 are respectively located at the upper and lower portions of the venturi section 811; the turbofan separator 82 comprises a ring body 821 coaxially arranged with the cyclone 81, and a plurality of swirl vanes 822 obliquely and uniformly distributed on the circumference of the ring body 821, wherein one ends of the swirl vanes 822 far away from the ring body 821 are connected with the inner wall of the cyclone 81; gaps for coke oven gas to pass through are formed between two adjacent swirl vanes 822. The swirl vanes 822 also allow for coke oven gas guidance to reduce overall pressure drop.

It should be noted that the female connection port 812 is preferably an internally threaded pipe orifice, and the male connection port 813 is preferably an externally threaded pipe orifice, but it is needless to say that the present embodiment may adopt other configurations of the female connection port 812 and the male connection port 813, such as a snap connection, as long as the two tube bundle dust removing cyclones 8 can be tightly combined through the female connection port 812 and the male connection port 813.

The venturi section 811 moves the centrifugally moving coke oven gas at a higher velocity, thereby more efficiently separating the dust and mist from the gas and accelerating the collection of the dust and mist on the inner wall of the cyclone 81.

The tube bundle dust removal cyclone 8 adopts a monomer design, and the design is convenient for installation and normal overhaul and maintenance; the 8 monomers of the tube bundle dust removal cyclone can be taken out and overhauled singly, the defects of the using function of the conventional dust removal equipment can be completely overcome, and the dust removal effect is far better than that of the tube bundle dust remover commonly used at present. The tube bundle dust removal cyclone 8 has no risk of scaling and blockage and no electrical equipment, so the cost is low, the water consumption is low, and the operation and the maintenance are simple.

The dust-carrying coke oven gas is fully saturated in the water mist mixing process of the gas-liquid mixing section 6, and the dust-carrying coke oven gas rises along with the coke oven gas after the saturation is finished and enters the tube bundle dust removal cyclone 8. When the coke oven gas passes through a gap formed between two adjacent cyclone blades 822, the obliquely arranged cyclone blades 822 change the direction of the coke oven gas in linear motion into circular motion, dust and fog in the coke oven gas are separated from the gas under the action of centrifugal force, the separated dust and fog are converged to the inner wall of the cyclone 81 under the principle of linear motion and finally are gathered into liquid, so that the separation from the gas phase is realized, the liquid falls under the action of gravity, and the phenomenon of secondary drifting entrainment is avoided. During the process, the coke oven gas passes through the venturi tube section 811, the gas is accelerated at the throat of the venturi tube section 811, and the dust and mist in the gas are accelerated by centrifugal force to be separated from the gas, so that the purification efficiency is high. The dust and fog separated from the gas are caught after contact with the liquid collected, achieving further removal of the dust and fog from the coke oven gas, thereby effectively removing the dust from the coke oven gas. Therefore, when the dust removing equipment removes dust, the flow resistance of the air flow is small, the efficiency is high, and the dust in the coke oven gas can be effectively removed by arranging two stages, namely the purification section 4 and the atomization section 5.

In this embodiment, the spraying section 3 includes a spraying pipe 31 disposed in the cylinder 1, a plurality of spraying heads are disposed on the spraying pipe 31, and the spraying range of the spraying heads covers the upper end of the multi-stage tube bundle dedusting cyclone 41; the water inlet of the spray pipe 31 extends out of the cylinder 1.

It should be noted that water enters the shower pipe 31 from the water inlet and is sprayed out from the shower head in the form of water drops, and the spraying range of the shower head covers the upper end of the multi-tube-bundle dust removal cyclone 41, so that dust and mist in the multi-tube-bundle dust removal cyclone 41 can be ensured to fall after being adsorbed.

In this embodiment, the atomizing section 5 is including setting up atomizing pipe 51 in the barrel 1, be equipped with a plurality of atomizer on the atomizing pipe 51, the water inlet of atomizing pipe 51 stretches out barrel 1.

It should be noted that water enters the atomizing pipe 51 from the water inlet and is sprayed from the atomizing nozzle in the form of water mist.

In this embodiment, the gas-liquid mixing section 6 comprises a bubble cap tray disposed within the barrel 1.

It should be noted that the gas-liquid mixing section 6 of the present invention can also adopt a sieve plate column plate, a float valve column and other structures.

In this embodiment, the lateral walls of the cylinder 1 provided with the gas inlet 7 and the purification section 4 are provided with pressure gauges 9.

It should be noted that the pressure gauge 9 at the gas inlet 7 is used to monitor the pressure of the coke oven gas entering the cylinder 1. And a pressure gauge 9 arranged on the purifying section 4 of the cylinder 1 is positioned above the pore plate and used for monitoring the pressure of the purified coke oven gas.

In this embodiment, the bottom of the cylinder 1 is of a spherical structure or a conical structure, a drain pipe 10 is installed at the lowest position of the bottom of the cylinder 1, and a liquid level meter 11 is installed on the side wall of the cylinder 1 below the gas inlet 7.

It should be noted that the sewage adsorbing dust is recycled through the sewage discharge pipe 10 in a unified way, so as to avoid environmental pollution. The liquid level meter 11 can monitor the volume of sewage at the bottom of the barrel 1, and further can discharge the sewage in time.

In this embodiment, a skirt 12 is arranged at the lower end of the cylinder 1, and a base for fixedly mounting the skirt 12 is arranged at the bottom of the skirt 12; a manhole is arranged on the skirt 12.

The base can be fixed to the screw on the ground by a nut, and the skirt 12 can be fixed. The manhole is convenient for the staff to maintain.

In this embodiment, still include the intake pipe, the one end of intake pipe stretches into the inside intermediate position department of barrel 1, the intake pipe stretches into the inside one end of barrel 1 is the scarf, the direction of scarf sets up, the other end of intake pipe does coal gas inlet 7.

The inclined notch is convenient for gas to flow upwards, and can enable the coke oven gas to be fully contacted with water mist so as to efficiently adsorb dust in the coke oven gas.

The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.

Claims

1. A coal gas double-stage low-resistance dust removal device is characterized in that: the device comprises a cylinder body (1) with a closed structure, wherein the cylinder body (1) is sequentially provided with a gas outlet (2), a spraying section (3), a purifying section (4), an atomizing section (5), a gas-liquid mixing section (6) and a gas inlet (7) from top to bottom;

the purification section (4) comprises a plurality of multi-stage tube bundle dedusting cyclones (41) arranged in the barrel body (1) side by side, and each multi-stage tube bundle dedusting cyclone (41) comprises a plurality of tube bundle dedusting cyclones (8) which are detachably connected.

2. The gas two-stage low-resistance dust removal device of claim 1, which is characterized in that: the tube bundle dust removal cyclone (8) comprises a cyclone (81) with a tubular structure and two turbofan separators (82) arranged in the cyclone (81), the middle of the cyclone (81) is a Venturi tube section (811), the upper end of the cyclone (81) is provided with a female connecting port (812), and the lower end of the cyclone (81) is provided with a male connecting port (813) matched with the female connecting port (812);

two said turbofan separators (82) are located respectively above and below said venturi section (811); the turbofan separator (82) comprises a ring body (821) coaxially arranged with the cyclone (81) and a plurality of cyclone blades (822) obliquely and uniformly distributed on the circumference of the ring body (821), and one ends, far away from the ring body (821), of the cyclone blades (822) are connected with the inner wall of the cyclone (81); gaps for coke oven gas to pass through are formed between two adjacent swirl vanes (822).

3. The gas two-stage low-resistance dust removal device of claim 2, which is characterized in that: the spraying section (3) comprises a spraying pipe (31) arranged in the cylinder body (1), a plurality of spraying heads are arranged on the spraying pipe (31), and the spraying range of the spraying heads covers the upper end of the multi-level tube bundle dedusting cyclone (41); the water inlet of the spray pipe (31) extends out of the cylinder body (1).

4. The gas two-stage low-resistance dust removal device of claim 1, which is characterized in that: atomizing section (5) are including setting up atomizing pipe (51) in barrel (1), be equipped with a plurality of atomizer on atomizing pipe (51), the water inlet of atomizing pipe (51) stretches out barrel (1).

5. The gas two-stage low-resistance dust removal device of claim 1, which is characterized in that: the gas-liquid mixing section (6) comprises a bubble cap tower plate arranged in the cylinder body (1).

6. The gas two-stage low-resistance dust removal device of claim 1, which is characterized in that: the cylinder (1) is provided with pressure gauges (9) at the side walls of the gas inlet (7) and the purification section (4).

7. The gas two-stage low-resistance dust removal device of claim 1, which is characterized in that: the coal gas purification device is characterized in that the bottom of the barrel (1) is of a spherical structure or a conical structure, a drain pipe (10) is installed at the lowest position of the bottom of the barrel (1), and a liquid level meter (11) is installed on the side wall below the coal gas inlet (7) of the barrel (1).

8. The gas two-stage low-resistance dust removal device of claim 1, which is characterized in that: the lower end of the cylinder body (1) is provided with a skirt (12), and the bottom of the skirt (12) is provided with a base for fixedly mounting the skirt (12); the skirt (12) is provided with a manhole.

9. The gas two-stage low-resistance dust removal device of claim 1, which is characterized in that: still include the intake pipe, the one end of intake pipe stretches into the inside intermediate position department of barrel (1), the intake pipe stretches into the inside one end of barrel (1) is the scarf, the direction of scarf sets up, the other end of intake pipe does coal gas import (7).