CN211725337U

CN211725337U - Flue gas desulfurization device

Info

Publication number: CN211725337U
Application number: CN201922024219.6U
Authority: CN
Inventors: 王槐
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-10-23
Anticipated expiration: 2029-11-21

Abstract

The utility model provides a flue gas desulfurization device, which comprises a flue gas inlet (1), a flowmeter (2) for detecting the flow of flue gas, a fan (3), a reaction tank for flue gas desulfurization, a circulating pool (9) for storing slurry, and a control panel (14), wherein the flue gas is conveyed into a gas equalizing chamber (4) of the reaction tank through the flue gas inlet (1) and the fan (3) via the flowmeter (2), and the flue gas in the gas equalizing chamber (4) flows into a reaction chamber (5) via an electric butterfly valve (6) to carry out the reaction of the flue gas and the slurry; the flue gas reacted with the slurry continuously flows upwards, is demisted by a demisting chamber (7), and then flows out through a chimney; meanwhile, the opening and closing of the fan (3), the circulating pump (10), the electric butterfly valve (6) and the electric valve (12) and the flow rate are controlled through a control panel (14) according to data fed back by the flue gas flowmeter (2), so that the ratio of flue gas to slurry in the reaction chamber (5) is realized, and the utilization rate of the slurry is increased.

Description

Flue gas desulfurization device

Technical Field

The utility model relates to a waste gas treatment technical field, concretely relates to flue gas desulfurization device.

Background

NOx (nitrogen oxides) generated during the combustion of fuel has become SO-removed₂External mainThe atmospheric pollutants are one of the main pollutants needing important emission reduction in the 'twelve five' period, wherein most of nitrogen oxides are NO and NO₂. At present, research on nitrogen oxide control technology at home and abroad is greatly developed, the flue gas denitration technology is the most effective and most researched NOx treatment method at present, and the biological flue gas simultaneous desulfurization and denitration method has the advantages of simple equipment, low investment and operation cost, simplicity in operation and maintenance, no secondary pollution and the like, and has the defects of mild conditions required for microbial desulfurization and denitration, unstable system and relatively low desulfurization and denitration efficiency. The wet desulfurization-denitration integrated technology (namely Fe (II) EDTA complexing absorption method) has the advantages of environmental friendliness, no corrosion, no secondary pollution, capability of desulfurization and denitration and the like, and is widely applied.

In the prior art, as described in a slurry circulating device of a prewashing tower of a desulfurization system disclosed in chinese patent document No. 201721500121.8: the system comprises a prewashing tower, a filter box and a slurry pump, wherein the prewashing tower is provided with an air inlet, an air outlet and a solid discharge port, and the solid discharge port is arranged at the bottom of the prewashing tower; a concentration pump is arranged at the bottom in the prewashing tower, a spraying device is arranged at the upper part in the prewashing tower, and the concentration pump is communicated with the spraying device through a slurry circulating pipeline; the solid discharge port of the prewashing tower is communicated with the filter box through a material conveying pipe, and the material conveying pipe is provided with an adjusting valve; a filter screen is arranged in the filter box, solid ammonium sulfate crystals are intercepted above the filter screen, a slurry pump is arranged below the filter screen, and the slurry pump is communicated with the prewashing tower through a filtrate circulating pipeline; the desulfurization device is not stopped, the crystallization of ammonium sulfate is not influenced, and the crystal blocks in the slurry are filtered, so that the stable operation of the concentration pump is ensured, and the safe operation of the desulfurization device and the generator set is realized. In the structure, the slurry pump is communicated with the prewashing tower through the filtrate circulating pipeline to desulfurize the flue gas, but the ratio of the flue gas to the slurry cannot be controlled in the conveying process of the slurry, so that the slurry is consumed more.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flue gas desulfurization device of the ratio of effective control thick liquid and flue gas to solve the problem that provides in the above-mentioned background art.

In order to achieve the purpose, the utility model provides a flue gas desulfurization device, which comprises a flue gas inlet, a flowmeter for detecting the flow of flue gas, a fan, a reaction tank for flue gas desulfurization and a circulating tank for storing slurry, wherein the flue gas inlet is conveyed into the reaction tank through the fan via a flue gas pipeline; the circulating tank is connected with the reaction tank through a circulating pipeline;

the reaction tank comprises a gas homogenizing chamber for temporarily storing the flue gas, a reaction chamber for reacting the slurry with the flue gas and a demisting chamber, the gas homogenizing chamber is communicated with the reaction chamber through an electric butterfly valve, and the reaction chamber is communicated with the demisting chamber;

preferably, the electric butterfly valves are arranged in parallel to control the flow of the flue gas flowing into the reaction chamber;

preferably, the gas homogenizing chamber, the reaction chamber and the demisting chamber are sequentially arranged from bottom to top.

The fan adopts a variable frequency fan.

A circulating pump and an electric valve for controlling the flow of the slurry are arranged between the circulating pool and the reaction chamber, the slurry in the circulating pool is conveyed into the reaction chamber through the circulating pump, and the conveyed flow is controlled through the electric valve;

preferably, in order to uniformly convey the slurry into the reaction chamber, a plurality of branch pipelines are arranged at the connecting end of the circulating pipeline and the reaction chamber;

preferably, the branch pipes of the circulation pipe are connected to different height positions of the reaction chamber;

preferably, the branch pipelines on the circulating pipeline are respectively provided with an electric valve.

As a further aspect of the present invention: in order to recycle the slurry, a recovery pipeline is also arranged between the reaction chamber and the circulating tank.

As a further aspect of the present invention: for better control fan, circulating pump, electronic dish valve and electric valve, desulphurization unit still includes control panel, control panel links to each other through the electric wire with flowmeter, fan, circulating pump, electronic dish valve, electric valve respectively.

The utility model discloses a theory of operation: the flue gas is conveyed into a gas homogenizing chamber of the reaction tank through a flue gas inlet and a flow meter through a fan, and the flue gas in the gas homogenizing chamber flows into the reaction chamber through an electric disc valve; the slurry is conveyed into the reaction chamber through a circulating pump and sprayed on the flue gas to react with the flue gas; the flue gas reacted with the slurry continuously flows upwards, is demisted by a demister arranged in a demisting chamber and then flows out through a chimney; and the control panel controls the opening and closing of the fan, the circulating pump, the electric butterfly valve and the electric valve and the flow according to the feedback data of the flue gas flowmeter so as to realize the ratio of the flue gas to the slurry in the reaction chamber and increase the utilization rate of the slurry.

Use the technical scheme of the utility model, following beneficial effect has:

(1) the utility model discloses in, control panel is according to the data control fan of flue gas flowmeter's feedback, circulating pump, electronic dish valve, electric valve's opening and closing and flow to realize the ratio of flue gas and thick liquid in the reacting chamber, with the utilization ratio that increases the thick liquid.

(2) The utility model discloses in, be equipped with the electronic butterfly valve of a plurality of between gas homogenizing chamber and the reacting chamber in order to control its flow, effectively guarantee the gas flow of gas homogenizing chamber flow direction reacting chamber.

(3) The utility model discloses to air-equalizing chamber, reaction chamber, defogging room from supreme setting gradually down to gaseous progressively reacts, in order to reach best reaction effect.

(4) The utility model discloses link to each other the end with the reacting chamber with circulation line and be equipped with a plurality of lateral conduit, and every lateral conduit locates on the not co-altitude position of reacting chamber to effectual assurance is carried the thick liquid to the different positions of reacting chamber in, reacts with the gas on the different positions in the reacting chamber.

(5) The utility model discloses in, the circulation line is equipped with the electric valve respectively with what the reacting chamber links to each other the end and is equipped with a plurality of lateral pipeline to independent control.

(6) The utility model discloses in, still be equipped with the recovery pipeline between reaction chamber and the circulation pond to thick liquid cyclic utilization.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:

FIG. 1 is a schematic view of the overall structure of the flue gas desulfurization apparatus of the present invention;

wherein:

1-a flue gas inlet, 2-a flow meter, 3-a fan, 4-a gas homogenizing chamber, 5-a reaction chamber, 6-an electric butterfly valve, 7-a demisting chamber, 8-a chimney, 9-a circulating pool, 10-a circulating pump, 11-a circulating pipeline, 12-an electric valve, 13-a recycling pipeline, 14-a control panel and 15-a flue gas pipeline.

Detailed Description

The embodiments of the invention will be described in detail hereinafter with reference to the accompanying drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "upper", "lower", "left", "right", and the like used in the specification and claims of the present disclosure are used only to indicate relative positional relationships, and when the absolute position of a described object is changed, the relative positional relationships are changed accordingly. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

Referring to fig. 1, a flue gas desulfurization device comprises a flue gas inlet 1, a fan 3, a circulation tank 9, a circulation pump 10, a gas homogenizing chamber 4, a demisting chamber 7, a chimney 8 and a reaction chamber 5, wherein the flue gas inlet 1 is connected with the fan 3 through a flue gas pipeline 15 and is conveyed into the gas homogenizing chamber 4 through the fan 3; the upper end of the gas homogenizing chamber 4 is provided with a reaction chamber 5, a demisting chamber 7 and a chimney 8 which are communicated with the gas homogenizing chamber 4; the reaction chamber 5 is connected with a circulating pool 9 through a circulating pipeline 11, and slurry in the circulating pool 9 is pumped into the reaction chamber 5 through a circulating pump 10 to react with the flue gas in the reaction chamber 5;

as a further embodiment of the present invention: and a flow meter 2 for metering the flow of the flue gas is also arranged between the flue gas inlet 1 and the fan 3.

As a further embodiment of the present invention: an electric butterfly valve 6 for controlling the flue gas is arranged between the gas homogenizing chamber 4 and the reaction chamber 5;

preferably, one or more electric butterfly valves 6 are arranged in parallel.

As a further embodiment of the present invention: the circulation pump 10 is arranged between the circulation tank 9 and the reaction chamber 5.

As a further embodiment of the present invention: an electric valve 12 is also arranged between the circulating pool 9 and the reaction chamber 5;

preferably, the electric valves 12 are arranged in parallel at least one and are uniformly arranged at different positions in the inner space of the reaction chamber 5;

preferably, a recycling pipeline 13 is further arranged between the reaction chamber 5 and the recycling tank 9 to recycle the slurry in the reaction chamber 5 to the recycling tank 9 for recycling the slurry.

As a further embodiment of the present invention: for better control flowmeter 2, fan 3, electronic butterfly valve 6, electric valve 12 and circulating pump 10, desulphurization unit still includes control panel 14, control panel 14 and flowmeter 2, fan 3, electronic butterfly valve 6, electric valve 12, circulating pump 10 pass through the electricity and link to each other, control panel 4 is through flowmeter 2 to the feedback detection data of flue gas flow, give fan 3, circulating pump 10, electronic butterfly valve 6 and electric valve 12 with the executive signal, fan 3, circulating pump 10, electronic butterfly valve 6 and electric valve 12 do corresponding regulation according to the executive signal, in order to realize the ratio of flue gas and thick liquid through frequency conversion control, make the ratio of flue gas and thick liquid balanced in the reacting chamber 5, with the consumption that reduces the thick liquid.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A flue gas desulfurization device is characterized in that: comprises a flue gas inlet (1), a flowmeter (2) for detecting the flow of flue gas, a fan (3), a reaction tank for flue gas desulfurization, a circulating pool (9) for storing slurry and a control panel (14);

the reaction tank comprises a gas homogenizing chamber (4) for temporarily storing the flue gas, a reaction chamber (5) for reacting the slurry with the flue gas and a demisting chamber (7), the gas homogenizing chamber (4) is communicated with the reaction chamber (5) through an electric butterfly valve (6), and the reaction chamber (5) is communicated with the demisting chamber (7);

flue gas is input from a flue gas inlet (1) and is conveyed to a gas homogenizing chamber (4) in the reaction tank through a fan (3) by a flue gas pipeline (15);

the circulation tank (9) is communicated with a reaction chamber (5) in the reaction tank through a circulation pipeline (11), a circulation pump (10) and an electric valve (12) for controlling the flow of slurry are arranged on the circulation pipeline (11), the slurry in the circulation tank (9) is conveyed into the reaction chamber (5) through the circulation pump (10), and the conveyed flow is controlled through the electric valve (12);

the control panel (14) is connected with the flowmeter (2), the fan (3), the circulating pump (10), the electric butterfly valve (6) and the electric valve (12) through electric wires respectively, and the fan (3), the circulating pump (10), the electric butterfly valve (6) and the electric valve (12) are correspondingly adjusted according to smoke flow data fed back by the flowmeter (2).

2. The flue gas desulfurization apparatus according to claim 1, characterized in that: the electric butterfly valves (6) are provided with a plurality of electric butterfly valves which are respectively arranged in parallel.

3. The flue gas desulfurization apparatus according to claim 1, characterized in that: the gas equalizing chamber (4), the reaction chamber (5) and the demisting chamber (7) are sequentially arranged from bottom to top.

4. The flue gas desulfurization apparatus according to claim 1, characterized in that: in order to evenly convey the slurry into the reaction chamber (5), a plurality of branch pipelines are arranged at the connecting end of the circulating pipeline (11) and the reaction chamber (5).

5. The flue gas desulfurization apparatus according to claim 4, characterized in that: branch pipelines on the circulating pipeline (11) are respectively connected to different height positions of the reaction chamber (5), and each branch pipeline is provided with an electric valve (12).

6. The flue gas desulfurization apparatus according to any one of claims 1 to 5, characterized in that: the fan (3) is a variable frequency fan; the electric butterfly valve (6) is a variable-frequency electric butterfly valve, and the electric valve (12) is a variable-frequency electric valve.

7. The flue gas desulfurization apparatus according to claim 6, characterized in that: in order to recycle the slurry, a recovery pipeline (13) is also arranged between the reaction chamber (5) and the circulating tank (9).