CN214715015U

CN214715015U - Boiler flue gas liquid acid removing device

Info

Publication number: CN214715015U
Application number: CN202120073054.6U
Authority: CN
Inventors: 王东; 金辉; 张保义
Original assignee: Hubei Jixing Chemical Industry Group Corp ltd
Current assignee: Hubei Jixing Chemical Industry Group Corp ltd
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2021-11-16
Anticipated expiration: 2031-01-12

Abstract

The utility model discloses a boiler flue gas liquid acid removing device, which comprises a separation pipeline connected with a flue gas pipeline of a boiler, wherein a plurality of baffle plates are vertically arranged in the separation pipeline, the bottom of the separation pipeline is connected with an acid liquor collecting box inlet through an acid discharge pipeline, and an outlet of the separation pipeline is connected with an inlet of a draught fan through an air outlet pipeline; the utility model discloses a set up separation pipeline and inside baffling board thereof, can effectively get off the sour interception of liquid in the boiler flue gas to through introducing hot steam, can in time carry out the cleaning process to separation pipeline and fan inside, effectively avoid the phenomenon of impeller corruption or damage to take place.

Description

Boiler flue gas liquid acid removing device

Technical Field

The utility model relates to a boiler flue gas handles technical field, specifically indicates a boiler flue gas liquid acid remove device.

Background

The existing boiler flue gas pipeline is a closed pipeline from the tail part of a boiler to the inlet of an induced draft fan, and because the boiler uses coal gas which is a mixture of various gases and contains impurities such as moisture, oil and dust, ammonia naphthalene, hydrogen sulfide and the like, liquid acid also exists when the coal gas and combustion-supporting air generate waste gas after combustion; acid adhesion causes the impeller to corrode on the one hand on the draught fan impeller, and on the other hand along with the accumulation of acid, causes the impeller unbalance easily, takes place vibrations, and after operation a period, the impeller rivet can become flexible, and causes the impeller to damage.

Disclosure of Invention

An object of the utility model is to overcome above-mentioned not enough, provide a boiler flue gas liquid acid remove device to solve the problem that proposes in the background art.

The utility model discloses a solve above-mentioned technical problem, the technical scheme who adopts is: the utility model provides a boiler flue gas liquid acid remove device, includes the separation pipeline of being connected with the flue gas pipeline of boiler, the vertical a plurality of baffling boards that are equipped with in the separation pipeline, separation pipeline bottom is through acid discharge pipeline and acidizing fluid collecting box access connection, the separation pipeline export is through giving vent to anger pipeline and draught fan entry linkage.

Preferably, the separation pipeline is a cuboid pipeline structure, the baffle plate is of a rectangular plate-shaped structure and is uniformly distributed on the upper side and the lower side of the separation pipeline.

Preferably, the top of the separation conduit is connected to a steam line through a first cleaning line.

Preferably, the top of the inner side of the draught fan shell is connected with a steam pipeline through a second cleaning pipeline, and the bottom of the inner side of the draught fan shell is connected with an inlet of the acid liquor collecting box through a third cleaning pipeline.

Preferably, the flue gas pipeline is provided with a first valve, the acid discharge pipeline is provided with a second valve, the gas outlet pipeline is provided with a third valve, the first clean pipeline is provided with a fourth valve, the second clean pipeline is provided with a fifth valve, and the third clean pipeline is provided with a sixth valve.

The utility model has the advantages that: the utility model discloses a set up separation pipeline and inside baffling board thereof, can effectively get off the sour interception of liquid in the boiler flue gas to through introducing hot steam, can in time carry out the cleaning process to separation pipeline and fan inside, effectively avoid the phenomenon of impeller corruption or damage to take place.

Drawings

FIG. 1 is a schematic structural diagram of a boiler flue gas liquid acid removal device;

fig. 2 is a schematic view of the internal structure of the separation duct of fig. 1.

Detailed Description

The invention is described in further detail below with reference to the figures and the embodiments.

As shown in fig. 1 and 2, a boiler flue gas liquid acid removing device comprises a separation pipeline 3 connected with a flue gas pipeline 2 of a boiler 1, a plurality of baffle plates 4 are vertically arranged in the separation pipeline 3, the bottom of the separation pipeline 3 is connected with an acid liquor collecting box 6 through an acid discharge pipeline 5, and an outlet of the separation pipeline 3 is connected with an inlet of an induced draft fan 8 through an air outlet pipeline 7.

Preferably, the separation pipeline 3 is a rectangular pipe structure, and the baffle plates 4 are rectangular plate-shaped structures and are uniformly distributed on the upper side and the lower side of the separation pipeline 3. After the design, the flue gas from the boiler can move forward along a zigzag path under the guidance of the baffle plate 4 when passing through the separation pipe 3, and in the process, liquid water in the flue gas can adhere to the surface of the baffle plate 4 or be condensed and then be collected at the bottom of the separation pipe 3.

Preferably, the top of the separation conduit 3 is connected to a steam line 10 via a first cleaning line 9. In this embodiment, the steam line 10 is connected to the steam outlet of the boiler 1, and hot steam is introduced into the first cleaning line 9 and then enters the separation pipe 3, so that the inside of the separation pipe 3 and the baffle plate 4 thereof can be cleaned, and the pressure inside the separation pipe 3 can be increased, so that the liquid acid collected at the bottom of the separation pipe 3 can be rapidly discharged.

Preferably, the top of the inner side of the shell of the induced draft fan 8 is connected with a steam pipeline 10 through a second cleaning pipeline 11, and the bottom of the inner side of the shell of the induced draft fan 8 is connected with an inlet of the acid liquor collecting tank 6 through a third cleaning pipeline 12. After the design, can supply hot steam in to second clean pipeline 11 through steam pipeline 10, then can let in hot steam in 8 casings of draught fan, carry out the cleaning process to its impeller and shells inner wall, clean condensation sewage can discharge into acidizing fluid collecting box 6 through third clean pipeline 12.

Preferably, the flue gas pipeline 2 is provided with a first valve 13, the acid discharge pipeline 5 is provided with a second valve 14, the gas outlet pipeline 7 is provided with a third valve 15, the first cleaning pipeline 9 is provided with a fourth valve 16, the second cleaning pipeline 11 is provided with a fifth valve 17, and the third cleaning pipeline 12 is provided with a sixth valve 18. In this embodiment, the opening and closing of the corresponding pipes or pipelines can be controlled by the corresponding valves.

The working principle of the embodiment is as follows:

firstly, when the flue gas from the boiler passes through the separation pipeline 3, the flue gas can move forward along a zigzag path under the guidance of the baffle plate 4, and in the process, liquid water in the flue gas can be adhered to the surface of the baffle plate 4 or condensed off and then is collected at the bottom of the separation pipeline 3; when the separation pipeline 3 needs to be cleaned, a fourth valve 16 is arranged on a second valve 14 on the acid discharge pipeline 5 and a first cleaning pipeline 9, and a first valve 13 on the flue gas pipeline 2 and a third valve 15 on the gas outlet pipeline 7 are closed, so that hot steam can be introduced into the first cleaning pipeline 9 and then enter the separation pipeline 3, the interior of the separation pipeline 3 and the baffle plate 4 can be cleaned, and the pressure in the separation pipeline 3 can be increased, so that liquid acid collected at the bottom of the separation pipeline 3 can be quickly discharged from the acid discharge pipeline 5 into the acid liquid collection box 6; when the impeller and the shell in the draught fan 8 need to be cleaned, the fifth valve 17 arranged on the second cleaning pipeline 11 and the sixth valve 18 arranged on the third cleaning pipeline 12 can be opened, at this time, hot steam can be introduced into the shell of the draught fan 8 to clean the impeller and the inner wall of the shell, and the cleaned condensed sewage can be discharged into the acid liquor collecting box 6 through the third cleaning pipeline 12.

The above embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the features in the embodiments and the examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.

Claims

1. The utility model provides a boiler flue gas liquid acid remove device, includes separation pipeline (3) of being connected with flue gas pipeline (2) of boiler (1), its characterized in that: the vertical a plurality of baffling boards (4) that are equipped with in separation pipeline (3), separation pipeline (3) bottom is through arranging sour pipeline (5) and acidizing fluid collecting box (6) access connection, separation pipeline (3) export is through giving vent to anger pipeline (7) and draught fan (8) entry linkage.

2. The boiler flue gas liquid acid removal device according to claim 1, wherein: the separation pipeline (3) is of a cuboid pipeline structure, the baffle plate (4) is of a rectangular plate-shaped structure, and the baffle plate is uniformly distributed on the upper side and the lower side of the separation pipeline (3).

3. The boiler flue gas liquid acid removal device according to claim 1, wherein: the top of the separation pipeline (3) is connected with a steam pipeline (10) through a first cleaning pipeline (9).

4. The boiler flue gas liquid acid removal device according to claim 3, wherein: draught fan (8) casing inboard top is connected with steam line (10) through second clean pipeline (11), draught fan (8) casing inboard bottom is through third clean pipeline (12) and acidizing fluid collecting box (6) access connection.

5. The boiler flue gas liquid acid removal device according to claim 4, wherein: be equipped with first valve (13) on flue gas pipeline (2), be equipped with second valve (14) on acid discharging pipeline (5), be equipped with third valve (15) on outlet pipe way (7), be equipped with fourth valve (16) on first clean pipeline (9), be equipped with fifth valve (17) on the clean pipeline of second (11), be equipped with sixth valve (18) on the clean pipeline of third (12).