CN211689142U

CN211689142U - Converter gas explosion-proof fine dust removal device

Info

Publication number: CN211689142U
Application number: CN202020320511.2U
Authority: CN
Inventors: 孙永来; 王永刚
Original assignee: Hebei Bozhao Environmental Protection Technology Co ltd
Current assignee: Hebei Bozhao Environmental Protection Technology Co ltd
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2020-10-16
Anticipated expiration: 2030-03-13

Abstract

The utility model discloses a converter coal gas explosion-proof type fine dust removal device, it relates to converter steelmaking technical field. Including shell, relief valve, collection dirt utmost point, water-spraying system, discharge electrode and the water tank for catchment and sealing, the shell inside be provided with the collection dirt utmost point and the discharge electrode of a plurality of one-to-one, the collection dirt is provided with water-spraying system above the utmost point, the shell bottom is connected with the water tank for catchment and sealing, the shell outside is provided with a plurality of relief valves. The utility model discloses horizontal and vertical structure's the inside high-voltage electrostatic field that all is equipped with the top spraying of device is through the high-voltage electrostatic field with moist dust lotus of electricity to adsorb and wash down through the water film after on the dust collecting electrode, reach the effect of smart dust removal.

Description

Converter gas explosion-proof fine dust removal device

Technical Field

The utility model relates to a converter steelmaking technical field, concretely relates to converter gas explosion-proof type fine dust collector.

Background

The fine dust removal device for the converter gas in China is mainly a wet-type electric dust remover for fine dust removal of output gas after a converter gas cabinet, and because the fine dust removal device is used for treating qualified converter gas, the possibility of discharge detonation in the fine dust removal device does not exist, and the shell, the internal discharge electrode and the dust collecting electrode adopted by the fine dust removal device have no function of preventing pressure impact.

Converter steelmaking is the main steelmaking equipment of china, and the flue gas that produces during the converter steelmaking gets into gas chamber recycle or diffuses through the chimney after removing dust through converter coal gas wet dedusting system, but wet process system does not reach the requirement of ultralow emission (less than or equal to 10mg/m3) at all, can not reach the normal environmental protection requirement of country (less than or equal to 50mg/m3) even, consequently must increase one set of smart dust collector again on original wet process system, and original wet process dedusting system mainly leans on the water to remove dust the flue gas, to sum up, the utility model discloses a to carrying out the entrapment dust removal through high-voltage static after fully moistening the flue gas to the process wet process system dust removal back.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a not enough to exist on the prior art, the utility model aims at providing a converter gas explosion-proof type fine dust collector, structural design is reasonable, according to the amount of flue gas, flue gas pressure, flue gas temperature, the flue gas entry contains dust concentration and the required exhanst gas outlet contains dust concentration isoparametric, determine the size of explosion-proof type fine dust collector's specification, the amount of spraying water, the quantity and the arrangement mode isoparametric of nozzle, according to the size of explosion-proof type fine dust collector, equipment operating pressure and equipment design are withstand voltage, determine the size of pressure relief valve through the calculation, quantity and opening force.

In order to achieve the above purpose, the present invention is realized by the following technical solution: the utility model provides a smart dust collector of explosion-proof type of converter coal gas, includes shell, relief valve, collection dirt utmost point, spraying system, discharge electrode and catchments and for the sealing water tank, the inside collection dirt utmost point and the discharge electrode that is provided with a plurality of one-to-one of shell, the collection dirt top is provided with spraying system, the shell bottom is connected with catchments and for the sealing water tank, the shell outside is provided with a plurality of relief valves.

Preferably, the housing is of a cylindrical pressure vessel type structure, and the cross section of the housing is circular.

Preferably, the two ends of the shell are divided into a flue gas inlet and a flue gas outlet.

Preferably, the spraying system adopts electrically automatic control spraying, the spraying is carried out at the top of an electric field, and the sprayed atomized particle size is not more than 300 mu mm.

Preferably, the discharge electrode is fixed to a frame by a polar line, and the frame is made of a seamless steel pipe of phi 34x 4.

Preferably, the dust collecting electrode is made of steel plates with the thickness of 6-8 mm, and a certain gap is reserved between the steel plates so as to reduce impact damage to the electrode plate during explosion venting.

The utility model discloses an explosion-proof resistance to compression type cylindrical structure, the withstand voltage 0.3MPa of casing is equipped with reliable self-closing coal gas safety relief valve on its shell, and its inside discharge electrode and the collection dirt polar structure that adopts antiknock nature strong uses before the original wet process system's of converter coal gas fan, can satisfy the requirement of ultralow emission.

The utility model discloses following beneficial effect has:

1. the pressure vessel type structure is adopted, the pressure impact resistance problem is solved, and the pressure vessel type structure can be flexibly arranged into a horizontal or vertical structure according to the site position;

2. a reliable and safe pressure release valve is arranged on the shell of the fine dust removal device, so that the problem that the equipment cannot be damaged once the interior of the fine dust removal device is exploded is solved;

3. the discharge electrode and the dust collecting electrode which are used for preventing pressure impact are adopted, so that the internal impact of the equipment cannot be damaged even if internal combustion and explosion occur;

4. the uniform top atomization system is adopted, so that dust in flue gas is uniformly wetted, large water drops are not formed, electric field breakdown discharge is avoided, a water film with a certain thickness is formed after dust and water mist are adsorbed by the dust collecting electrode, and the dust is washed away when the water film flows down along with the action of gravity.

Drawings

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments;

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

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a side view of FIG. 1;

fig. 4 is a schematic view of the vertical structure of the present invention;

FIG. 5 is a top view of FIG. 4;

fig. 6 is a sectional view taken along line a-a of fig. 4.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

Referring to fig. 1 to 6, the following technical solutions are adopted in the present embodiment: the utility model provides a smart dust collector of explosion-proof type of converter coal gas, includes shell 1, relief valve 2, collection dirt utmost point 3, atomizing system 4, discharge electrode 5 and catchments and for sealed water tank 6, 1 inside collection dirt utmost point 3 and the discharge electrode 5 that is provided with a plurality of one-to-one of shell, 3 tops of collection dirt utmost point are provided with atomizing system 4, 1 bottoms of shell are connected with catchments and for sealed water tank 6, 1 outsides of shell are provided with a plurality of relief valves 2.

It is noted that the housing 1 is a cylindrical pressure vessel type structure, and the cross section of the housing is circular.

It is noted that the two ends of the housing 1 are divided into a flue gas inlet 7 and a flue gas outlet 8.

It is noted that the spraying system 4 adopts electric automatic control spraying, and sprays on the top of the electric field, and the sprayed atomized particle size is not more than 300 mu mm.

It should be noted that the discharge electrode 5 is fixed on the frame by the polar line, and the frame is made of seamless steel pipe with phi 34x 4.

In addition, the dust collecting electrode 3 is made of steel plates with the thickness of 6-8 mm, and a certain gap is reserved between the steel plates so as to reduce impact damage to the polar plate during explosion venting.

The device of the specific embodiment mainly has two structural forms, one is horizontal, the other is vertical, each structure is made into an explosion-proof circular structure and is provided with a pressure relief and explosion venting device, a high-voltage electrostatic field for spraying at the top is arranged in each structure, moist dust is charged through the high-voltage electrostatic field and is adsorbed on the dust collecting electrode and then washed through a water film, and the effect of fine dust removal is achieved. The explosion-proof fine dust removal device mainly comprises a cylindrical shell, an internal spraying system, a discharge electrode, a dust collecting electrode part, a pressure release valve, a water collecting and sealing water tank and the like. The working principle is as follows: after the dust-containing flue gas is washed and dedusted by the original wet system and enters the converter gas explosion-proof fine dedusting device, the flue gas uniformly enters an electric field with a circular cross section under the action of an inlet flow guide device, flows in the electric field in a plug-shaped flow mode, is closely contacted with fog drops sprayed by a spraying system in the electric field, so that dust particles in the flue gas are fully collided and condensed with the fog drops, are adsorbed by a dust collecting electrode under the action of a strong electrostatic field, are washed down by a water film on the dust collecting electrode and are discharged, and the clean flue gas after dedusting enters a subsequent device (a diffusing chimney, a gas cabinet or is directly conveyed to a gas user for use after being pressurized).

This embodiment increases a set of explosion-proof type fine dust collector on original wet dedusting system of converter coal gas, the device is installed before the fan of original wet system, original wet system is by installing the multistage washing equipment in the steelmaking workshop with the dust in the flue gas wash clean the back and lead to outside the factory building, diffuse the flue gas or retrieve coal gas through fan and diverter valve, but original wet system has basically not satisfied the requirement of ultralow emission, consequently need carry out fine dust removal once more on original basis, diffuse the flue gas or retrieve coal gas through fan and diverter valve after removing fine dust of flue gas.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a smart dust collector of explosion-proof type of converter coal gas, its characterized in that, includes shell (1), relief valve (2), collection dirt utmost point (3), water spray system (4), discharge electrode (5) and catchments and seal with water tank (6), shell (1) inside be provided with collection dirt utmost point (3) and discharge electrode (5) of a plurality of one-to-one, collection dirt utmost point (3) top is provided with water spray system (4), shell (1) bottom is connected with catchments and seals with water tank (6), shell (1) outside is provided with a plurality of relief valves (2).

2. The anti-explosion fine dust removal device for converter gas as claimed in claim 1, wherein the housing (1) is of a cylindrical pressure vessel type structure, and the cross section of the housing is circular.

3. The anti-explosion fine dust removal device for converter gas as claimed in claim 1, wherein two ends of the housing (1) are divided into a flue gas inlet (7) and a flue gas outlet (8).

4. The converter gas explosion-proof fine dust removal device as claimed in claim 1, wherein the spraying system (4) adopts electrically automatic control spraying, the spraying is carried out at the top of an electric field, and the sprayed spraying particle size is not more than 300 μmm.

5. The converter gas explosion-proof fine dust removal device as claimed in claim 1, wherein the discharge electrode (5) is of a structure that a polar line is fixed on a frame, and the frame is made of a seamless steel pipe with a diameter of phi 34x 4.

6. The converter gas explosion-proof fine dust removal device as claimed in claim 1, wherein the dust collecting electrodes (3) are made of steel plates with the thickness of 6-8 mm, and gaps are reserved among the steel plates.