CN210057794U - Equipment for reducing temperature and water content of wet flue gas in wet washing - Google Patents
Equipment for reducing temperature and water content of wet flue gas in wet washing Download PDFInfo
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- CN210057794U CN210057794U CN201920481758.XU CN201920481758U CN210057794U CN 210057794 U CN210057794 U CN 210057794U CN 201920481758 U CN201920481758 U CN 201920481758U CN 210057794 U CN210057794 U CN 210057794U
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Abstract
A kind of apparatus for reducing wet scrubbing wet flue gas temperature and water content, the medium channel is made up of middle water pitcher, water chiller, tubular blade group and hollow broken line shape blade group inboard channel connected sequentially, there are circulating pumps between middle water pitcher and water chiller, there are water inlet headers between water chiller and tubular blade group, there are middle headers between tubular blade group and hollow broken line shape blade group, another side of the hollow broken line shape blade group connects with the water outlet header, the water outlet header connects the middle water pitcher through the circulation line, form the circulation channel; the flue gas passage consists of a tubular blade group and a hollow zigzag-shaped blade group outer passage. The small liquid drops in the flue gas are collected and separated through the physical action of the tubular blades and the hollow broken line blades, the temperature of the flue gas can be reduced by more than 5 ℃, the water content of the flue gas is smaller than 60g/kg (dry flue gas), the liquid drop content is smaller than 50mg/Nm, and therefore the problems of 'rain and smoke plume' in the discharging process of wet flue gas are solved.
Description
Technical Field
The utility model belongs to the technical field of atmospheric environment protects, a flue gas processing technology is related to, concretely relates to reduce wet flue gas temperature of wet process washing and equipment of water content.
Background
At present, coal-fired equipment in China, including tail gas treatment projects such as power plant boilers, kilns and waste heat boilers in the non-power generation field, are basically constructed, wherein the wet flue gas washing treatment process accounts for more than 85%, and the technology is gradually mature. However, in recent years, by following and investigating a wet flue gas treatment project, it is found that wet flue gas parameters after washing generally exist in a long-term operation of a wet washing process as follows: the temperature of the flue gas is about 50 ℃, the water content of the flue gas is 87g/kg (dry flue gas), the liquid drop content is more than 75mg/Nm, the phenomena of 'smoke rain and smoke plume' appear in the process of carrying out heavy planting, and the pollution to the atmospheric environment is caused.
Disclosure of Invention
The utility model discloses "rain, smoke feather" phenomenon appears in the emission process to the wet flue gas of tradition and provides the equipment of the wet flue gas temperature of reduction wet process washing and water content.
In order to achieve the purpose, the utility model is realized by adopting the following technical scheme:
an equipment for reducing the temperature and the water content of wet flue gas in wet scrubbing comprises a medium passage and a flue gas passage,
the medium passage consists of a middle water tank, a water cooler, a tubular blade group and a hollow zigzag-shaped blade group inner passage which are connected in sequence, wherein the medium passage is formed by the middle water tank, the water cooler, the tubular blade group and the hollow zigzag-shaped blade group inner passage which are connected in sequence
An intermediate water tank: for storing the circulating cooling medium in a circulating manner,
a water cooling machine: for cooling the circulating cooling medium in a cooling circuit,
tubular blade group and hollow broken line shape blade group: is used for providing a heat exchange place of flue gas and circulating cooling medium,
a circulating water pump is arranged between the intermediate water tank and the water cooler, a water inlet header is arranged between the water cooler and the tubular blade group, an intermediate header is arranged between the tubular blade group and the hollow zigzag-shaped blade group, the other side of the hollow zigzag-shaped blade group is connected with a water outlet header, and the water outlet header is connected with the intermediate water tank through a circulating pipeline to form a circulating passage;
the flue gas passage consists of a tubular blade group and a hollow zigzag-shaped blade group outer passage.
Preferably, the tubular blade group is distributed in parallel staggered arrangement, the tubular blade group is arranged at the upstream of the hollow broken line-shaped blade group, the hollow broken line-shaped blade group is distributed in parallel in sequence, and the blades of the hollow broken line-shaped blade group have more than three bending points.
Preferably, the tubular blade group and the hollow zigzag blade group are provided with a flushing pipeline and an atomizing nozzle.
Preferably, the heat exchange mode of the medium channel and the flue gas channel is cross flow heat exchange.
Preferably, the circulating cooling medium stored in the intermediate water tank is cooled by a water cooler and then sequentially enters the inner sides of the tubular blade group and the hollow zigzag-shaped blade group, and meanwhile, the wet flue gas flows through the outer parts of the tubular blade group and the hollow zigzag-shaped blade group, so that the low-temperature circulating cooling medium and the wet flue gas realize indirect heat exchange, the temperature and the moisture content of the wet flue gas are reduced, and partial water vapor is separated out; the wet flue gas collides, is agglomerated and forms a film under the action of inertia force, and the gas-liquid separation of the flue gas is realized.
Preferably, the circulating cooling medium temperature in the intermediate water tank is <15 ℃.
Preferably, the circulating cooling medium is demineralized or demineralized water.
Compared with the prior art, the utility model discloses an advantage lies in with positive effect:
the utility model discloses a wet flue gas temperature is solved in the cooling reduction, has reduced the relative moisture content of flue gas. The small liquid drops in the flue gas are collected and separated through the physical action of the tubular blades and the hollow broken line blades, the temperature of the flue gas can be reduced by more than 5 ℃, the water content of the flue gas is smaller than 60g/kg (dry flue gas), the liquid drop content is smaller than 50mg/Nm, and therefore the problems of 'rain and smoke plume' in the discharging process of wet flue gas are solved.
Drawings
Fig. 1 is the schematic view of the flow structure of the equipment of the present invention.
The figures are numbered: 1. the water-saving device comprises an intermediate water tank, 2. a circulating water pump, 3. a water chiller, 4. a water inlet header, 5. a tubular blade group, 6. an intermediate header, 7. a hollow polygonal blade, 8. a water outlet header, 9. a flushing pipeline, 10 nozzles and 11 pipeline valve components.
Detailed Description
In order that the above objects, features and advantages of the present invention may be more clearly understood, the present invention will be further described with reference to specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the present invention is not limited to the limitations of the specific embodiments of the present disclosure.
Example 1 this example provides the detailed steps of an apparatus and method for reducing the temperature and moisture content of wet scrubbed wet flue gas, as shown in figure 1.
The equipment for reducing the temperature and the water content of wet-process washing wet flue gas comprises a middle water tank 1, a circulating water pump 2, a water cooler 3, a water inlet header 4, a tubular blade group 5, a middle header 6, hollow zigzag-shaped blades 7, a water outlet header 8, a flushing pipeline 9, a nozzle 10, a pipeline valve assembly 11 and other parts. A water side flow: the cooling medium sequentially passes through the intermediate water tank 1, the circulating water pump 2, the water cooler 4, the water inlet header 5, the tubular blade 6, the intermediate header 7, the hollow polygonal blade 7 and the water outlet header 8 and then returns to the intermediate water tank 1. Flue gas side flow: wet flue gas passes through the tubular blade group 5 at first perpendicularly, and then passes through the hollow dogleg-shaped blade group 7, and flue gas and cryogenic cooling medium indirect heat transfer, and the heat exchanger can adopt horizontal flow or vertical flow to arrange according to flue gas flow direction. And a blade surface washing system is configured to prevent the surface of the heat exchange surface assembly from scaling.
The intermediate water tank 1 is used for storing a circulating cooling medium; the cooling medium adopts closed circulation; the water chiller 3 is used for cooling a circulating medium in a system to produce low-temperature water; cooling medium flows through the inside of the blades of the heat exchange component, wet flue gas flows through the outside of the blades of the heat exchange component, and cooled low-temperature medium and the wet flue gas are used for indirectly exchanging heat through the heat exchange component, so that the temperature of the wet flue gas is reduced, the moisture content is reduced, and partial water vapor is separated out; wet flue gas passes through the multi-bending blade group arranged in parallel, and gas-liquid separation of the flue gas is finally realized through collision, agglomeration and film formation under the action of inertia force; set up and wash pipeline and atomizing nozzle, can carry out the atomizing to the blade surface and wash, prevent blade surface scale deposit.
Wherein the cooling medium is cooled by a water chiller 3; the blades are tubular blades 5 and hollow polygonal blades 7; a heat exchange group is formed by a water inlet header 4, a tubular blade 5, a middle header 6, a hollow polygonal blade 7 and a water outlet header 8; the multi-turning channel is formed by parallel staggered duct pieces and hollow broken line-shaped blades which are arranged in parallel, and the blades have more than three turning points; the blade is provided with a flushing pipeline. The lower side of the tubular blade is provided with a washing pipeline which washes upwards, the pipeline is provided with an atomizing nozzle 10, the lower side of the broken line blade is provided with a washing pipeline which washes upwards and downwards at the same time, the pipeline is provided with an atomizing nozzle, the washing water adopts a common water source, and the inlet pressure is 0.2-0.3 MPa.
The method for reducing the temperature and the water content of wet-process washing wet flue gas comprises the following steps: the circulating cooling medium stored in the intermediate water tank 1 is cooled by the water cooler 3 and then sequentially enters the inner sides of the tubular blade group 5 and the hollow zigzag-shaped blade group 7, and meanwhile, wet flue gas flows through the outer parts of the tubular blade group 5 and the hollow zigzag-shaped blade group 7, so that indirect heat exchange between the low-temperature circulating cooling medium and the wet flue gas is realized, the temperature and the moisture content of the wet flue gas are reduced, and partial water vapor is separated out; the wet flue gas collides, is agglomerated and forms a film under the action of inertia force, and the gas-liquid separation of the flue gas is realized. Wherein the temperature of the circulating cooling medium in the intermediate water tank 1 is <15 ℃.
And after gas-liquid separation treatment of the flue gas, carrying out dry flue gas chromatography on the flue gas at the temperature of 44.3 ℃ from 50 ℃ so as to reduce the water content of the flue gas by 22g/kg and carry out liquid drop weight < 50 mg/Nm.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.
Claims (4)
1. The equipment for reducing the temperature and the water content of wet-method washing wet flue gas is characterized by comprising a medium passage and a flue gas passage,
the medium passage consists of a middle water tank, a water cooler, a tubular blade group and a hollow zigzag-shaped blade group inner passage which are connected in sequence, wherein the medium passage is formed by the middle water tank, the water cooler, the tubular blade group and the hollow zigzag-shaped blade group inner passage which are connected in sequence
An intermediate water tank: for storing the circulating cooling medium in a circulating manner,
a water cooling machine: for cooling the circulating cooling medium in a cooling circuit,
tubular blade group and hollow broken line shape blade group: is used for providing a heat exchange place of flue gas and circulating cooling medium,
a circulating water pump is arranged between the intermediate water tank and the water cooler, a water inlet header is arranged between the water cooler and the tubular blade group, an intermediate header is arranged between the tubular blade group and the hollow zigzag-shaped blade group, the other side of the hollow zigzag-shaped blade group is connected with a water outlet header, and the water outlet header is connected with the intermediate water tank through a circulating pipeline to form a circulating passage;
the flue gas passage consists of a tubular blade group and a hollow zigzag-shaped blade group outer passage.
2. The apparatus for reducing the temperature and moisture content of wet scrubbing wet flue gas of claim 1, wherein said tubular vane packs are arranged in a parallel staggered arrangement, said tubular vane packs are disposed upstream of said hollow dog-leg vane packs, said hollow dog-leg vane packs are arranged in a parallel in-line arrangement, and said hollow dog-leg vane packs have three or more turning points on the vanes.
3. The apparatus for reducing the temperature and water content of wet scrubbing wet flue gas according to claim 1 or 2, wherein said tubular vane assembly and said hollow dogleg vane assembly are provided with flushing lines and atomizing nozzles.
4. The apparatus for reducing the temperature and the water content of wet scrubbing wet flue gas according to claim 1, wherein the heat exchange manner between the medium passage and the flue gas passage is cross-flow heat exchange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920481758.XU CN210057794U (en) | 2019-04-11 | 2019-04-11 | Equipment for reducing temperature and water content of wet flue gas in wet washing |
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| CN201920481758.XU CN210057794U (en) | 2019-04-11 | 2019-04-11 | Equipment for reducing temperature and water content of wet flue gas in wet washing |
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| CN210057794U true CN210057794U (en) | 2020-02-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109999603A (en) * | 2019-04-11 | 2019-07-12 | 通用技术集团工程设计有限公司 | A kind of device and method reducing wet scrubbing wet flue gas temperature and water content |
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2019
- 2019-04-11 CN CN201920481758.XU patent/CN210057794U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109999603A (en) * | 2019-04-11 | 2019-07-12 | 通用技术集团工程设计有限公司 | A kind of device and method reducing wet scrubbing wet flue gas temperature and water content |
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