CN210544252U

CN210544252U - Boiler flue gas de-whitening heat exchange device

Info

Publication number: CN210544252U
Application number: CN201921340051.3U
Authority: CN
Inventors: 高俊峰; 任洪波; 张永耀; 张聿明; 付晓辰; 李南潮; 刘洋
Original assignee: Liaoning Aiwogelin Energy Conservation Technology Co ltd
Current assignee: Liaoning aiwogreen Energy Technology Co.,Ltd.
Priority date: 2019-08-19
Filing date: 2019-08-19
Publication date: 2020-05-19
Anticipated expiration: 2029-08-19

Abstract

The utility model belongs to the technical field of boiler flue gas processing technique and specifically relates to a boiler flue gas takes off white heat transfer device, including transition room, purification heat transfer room and drip chamber, the purification heat transfer room top is located to the transition room, and is equipped with into the mouth on one side of the transition room, is equipped with tobacco pipe and low temperature water in the purification heat transfer room, just cross the tobacco pipe upper end with the transition room communicates with each other, the lower extreme is located the low temperature surface of water of purification heat transfer room, purification heat transfer room keeps away from the upper end of advancing mouth one side is equipped with the exhaust port, the lower extreme is equipped with the inlet channel, purification heat transfer room is close to inlet port one side lower extreme is equipped with outlet channel purify heat transfer room below and be equipped with the. The utility model discloses can satisfy the purification requirement of vapor condensation dehydration (whitening) in the flue gas, can realize the heat transfer of low temperature water and flue gas again, and then realize retrieving the purpose of flue gas waste heat energy.

Description

Boiler flue gas de-whitening heat exchange device

Technical Field

The utility model belongs to the technical field of boiler flue gas processing technique and specifically relates to a boiler flue gas takes off white heat transfer device.

Background

The exhaust smoke of various boilers used at present usually contains a large amount of water vapor and a large amount of waste heat energy, wherein the water vapor is condensed into water in the air to form white smoke plume, the mixed dust of the water vapor forms haze, the exhaust of the large amount of waste heat energy not only causes energy waste but also forms thermal pollution, and the exhaust smoke also contains pollutants, wherein part of the pollutants are carried and discharged by the moisture in the smoke, therefore, if the moisture in the smoke can be better removed (namely, the white smoke plume is eliminated, namely, the white smoke plume is removed) and the waste heat energy in the smoke is recovered, the pollution can be reduced, and the utilization efficiency of primary energy can be improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a boiler flue gas takes off white heat transfer device can satisfy the purification requirement of steam condensate dehydration (taking off white) in the flue gas, can realize the heat transfer of low-temperature water and flue gas again, and then retrieves the waste heat energy of flue gas in order to recycle, has reached energy-concerving and environment-protective purpose.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a boiler flue gas takes off white heat transfer device, includes transition room, purification heat transfer room and drip chamber, and the transition room is located purification heat transfer room top, and transition room one side is equipped with into the mouth, is equipped with in the purification heat transfer room and crosses tobacco pipe and low temperature water, just cross the tobacco pipe upper end with the transition room communicates with each other, the lower extreme is located the low temperature surface of water of purification heat transfer room, the purification heat transfer room is kept away from the upper portion of advancing mouth one side is equipped with the exhaust port, the lower part is equipped with the inlet channel, the purification heat transfer room is close to inlet port one side lower part is equipped with outlet channel purify the heat transfer room below and be equipped with the.

The water inlet pipeline is provided with a plurality of water spraying pipes, and the water spraying pipes correspond to the smoke passing pipes one to one.

And an overflow pipeline is arranged on one side of the purification heat exchange chamber, which is close to the smoke inlet.

The settling chamber is funnel-shaped, a sewage discharge pipeline is arranged at the lower end of the settling chamber, and a sewage discharge valve is arranged on the sewage discharge pipeline.

The utility model discloses an advantage does with positive effect:

1. the utility model discloses a boiler flue gas and low temperature water contact heat transfer get rid of vapor in the flue gas, can satisfy the purification requirement of vapor condensation dehydration (whitening) in the flue gas, can realize the heat transfer of low temperature water and flue gas again, and then retrieve the waste heat energy of flue gas in order to recycle, have reached energy-concerving and environment-protective purpose.

2. The utility model discloses simple structure, easily operation, the running cost is low.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Wherein, 1 is a smoke inlet, 2 is a transition chamber, 3 is a purification heat exchange chamber, 4 is a smoke outlet, 5 is a water inlet pipeline, 501 is a water spray pipe, 6 is a water outlet pipeline, 7 is a sedimentation chamber, 8 is a blow-off valve, 9 is an overflow pipeline, and 10 is a smoke passing pipe.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in figure 1, the utility model comprises a transition chamber 2, a purification heat exchange chamber 3 and a settling chamber 7, wherein the transition chamber 2 is arranged above the purification heat exchange chamber 3, a smoke inlet 1 is arranged at one side of the transition chamber 2, a smoke tube 10 and low-temperature water are arranged in the purification heat exchange chamber 3, the upper end of the smoke tube 10 is communicated with the transition chamber 2, the lower end of the smoke tube is arranged under the low-temperature water surface of the purification heat exchange chamber 3, the upper part of one side of the purification heat exchange chamber 3 away from the smoke inlet 1 is provided with a smoke outlet 4, the lower part of the purification heat exchange chamber 3 close to the smoke inlet 1 is provided with a water outlet 6, the low-temperature water flows into the purification heat exchange chamber 3 through the water inlet 5, is discharged through the water outlet 6 after heat exchange, the smoke in the transition chamber 2 enters the low-temperature water in the purification heat exchange chamber 3 through the smoke tube 10, and is discharged through the smoke outlet 4 after heat, a plurality of settling chambers 7 are arranged below the purifying heat exchange chamber 3, and dirt contained in the flue gas is deposited in the settling chambers 7.

As shown in fig. 1, a plurality of water spraying pipes 501 are arranged on the water inlet pipeline 5, and the water spraying pipes 501 correspond to the smoke passing pipes 10 one by one, so that the smoke generates self-oscillation when contacting with the low-temperature water, thereby improving the heat exchange effect. In addition, as shown in fig. 1, an overflow pipeline 9 is disposed on one side of the purification heat exchange chamber 3 close to the smoke inlet 1, and since the liquid level in the purification heat exchange chamber 3 is increased due to the condensation of water vapor in the smoke during heat exchange, in order to ensure the liquid level, the excess liquid is discharged from the overflow pipeline 9, and corresponding control valves are disposed on the water inlet pipeline 5, the water outlet pipeline 6 and the overflow pipeline 9 as required to control the opening and closing of the pipelines, which is a known technique in the art.

As shown in fig. 1, the settling chamber 7 is funnel-shaped, the cross section of the settling chamber is inverted trapezoid, so as to fully ensure the sewage settling effect, a sewage discharge pipeline is arranged at the lower end of each settling chamber 7, a sewage discharge valve 8 is arranged on each sewage discharge pipeline, and when the sewage discharge valve 8 is opened, the sewage in the settling chamber 7 is automatically discharged. The blow-off valve 8 is well known in the art.

The utility model discloses a theory of operation does:

the technical principle of the utility model is that make the flue gas condensate the dehydration through the low temperature water that is less than dew point temperature with the steam in the flue gas, and then make the moisture content in the flue gas desorption by a wide margin, the pollutant etc. that carry in the moisture are also got rid of simultaneously.

As shown in figure 1, the utility model discloses during operation, the boiler flue gas from in the inlet smoke 1 gets into transition room 2, and the flue gas gets into the low temperature aquatic in purifying heat transfer room 3 through a plurality of tobacco pipes 10 in transition room 2, the flue gas vibrates with the self excitation that produces when low temperature water contacts with the flue gas and carries out the contact heat transfer with low temperature water and improves heat transfer effect, cause vapor condensation to low temperature aquatic in the flue gas, flue gas temperature and humidity descend, and discharge through exhaust port 4, and low temperature water gets into in purifying heat transfer room 3 with the flue gas contact heat transfer through inlet pipe 5, and low temperature water absorbs heat energy and makes the temperature rise in the flue gas when condensing flue gas vapor, then discharge and recycle through outlet pipe 6 again. In the embodiment, the temperature of the input low-temperature water is 7 ℃, the temperature of the discharged water after heat exchange is 12 ℃, in addition, in the embodiment, the water outlet pipeline 6 is connected with a waste heat energy recycling system with the authorization publication number of CN202494241U and provides a low-grade waste heat energy water source for the waste heat energy recycling system, the waste heat energy recycling system converts the low-grade waste heat energy into high-grade heat energy and outputs hot water and hot air, and the temperature can reach 40-90 ℃, so that the waste heat energy of the flue gas can be recycled. After the flue gas is purified and heat exchanged, the dirt contained in the flue gas is deposited in the settling chamber 7, and the blowoff valve 8 can be opened at regular time to automatically discharge the dirt. In addition, the liquid level in the purifying heat exchange chamber 3 is increased due to the condensation of the vapor in the flue gas, and in order to ensure the liquid level, redundant liquid is discharged by an overflow pipeline 9.

Claims

1. The utility model provides a boiler flue gas takes off white heat transfer device which characterized in that: including transition room (2), purification heat transfer room (3) and drip chamber (7), purification heat transfer room (3) top is located in transition room (2), and is equipped with into smoke mouth (1) on one side of transition room (2), is equipped with in purification heat transfer room (3) and crosses tobacco pipe (10) and low temperature water, just cross tobacco pipe (10) upper end with transition room (2) communicate with each other, the lower extreme is located the low temperature surface of water of purification heat transfer room (3) under, purification heat transfer room (3) are kept away from the upper portion of advancing smoke mouth (1) one side is equipped with exhaust port (4), the lower part is equipped with inlet channel (5), purification heat transfer room (3) are close to it is equipped with outlet conduit (6) to advance smoke mouth (1) one side lower part purification heat transfer room (3) below is equipped with drip chamber (7).

2. The boiler flue gas whitening heat exchange device of claim 1, characterized in that: the water inlet pipeline (5) is provided with a plurality of water spraying pipes (501), and the water spraying pipes (501) correspond to the smoke passing pipes (10) one by one.

3. The boiler flue gas whitening heat exchange device of claim 1, characterized in that: and an overflow pipeline (9) is arranged on one side of the purification heat exchange chamber (3) close to the smoke inlet (1).

4. The boiler flue gas whitening heat exchange device of claim 1, characterized in that: the sedimentation chamber (7) is funnel-shaped, and the lower end of the sedimentation chamber (7) is provided with a sewage discharge pipeline which is provided with a sewage discharge valve (8).