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CN210934450U - Boiler flue gas emission and purification system - Google Patents

Boiler flue gas emission and purification system Download PDF

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Publication number
CN210934450U
CN210934450U CN201921179525.0U CN201921179525U CN210934450U CN 210934450 U CN210934450 U CN 210934450U CN 201921179525 U CN201921179525 U CN 201921179525U CN 210934450 U CN210934450 U CN 210934450U
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flue gas
spraying
pipe
branch pipes
shaped
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CN201921179525.0U
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赵永利
张传跃
隋广科
李秀涛
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Lianhong New Materials Technology Co ltd
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Lianhong New Materials Technology Co ltd
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Abstract

The application belongs to the environmental protection field, concretely relates to boiler fume emission clean system. The system purifies the flue gas discharged by the boiler through the synergistic effect of various means by arranging devices such as spraying, rotary converging coupling, tube bundle type dust removal and the like.

Description

Boiler flue gas emission and purification system
Technical Field
The application belongs to the environmental protection field, concretely relates to boiler fume emission clean system.
Background
Ultra-low emission of flue gas refers to that the emission concentration of atmospheric pollutants of a coal-fired boiler of a thermal power plant basically meets the emission limit value of a gas turbine unit by adopting a multi-pollutant efficient collaborative removal system technology in the processes of power generation operation, tail end treatment and the like, namely, the emission concentrations (the reference oxygen content is 6%) of smoke dust, sulfur dioxide and nitric oxide do not exceed 5 mg/m for cultivation, 35 mg/m for cultivation and 50mg/m for cultivation respectively, and are respectively reduced by 75%, 30% and 50% compared with the special emission limit value of key areas of the coal-fired boiler specified in the atmospheric pollutant emission standard of the thermal power plant (GB13223), and the flue gas ultra-low emission is a new standard rod for the clean production.
The boiler flue gas contains a large amount of harmful substances such as sulfide and dust, and if the harmful substances are directly discharged into the atmosphere, acid rain and the like can be formed, so that the environment is harmed. Therefore, the boiler flue gas needs to be cleaned before being discharged.
In conclusion, it is very important to design and invent a system capable of purifying the boiler flue gas.
Disclosure of Invention
The application aims at providing a boiler flue gas emission clean system. The system purifies the flue gas discharged by the boiler through the synergistic effect of various means by arranging devices such as spraying, rotary converging coupling, tube bundle type dust removal and the like.
In order to achieve the above purpose, the technical means adopted by the application are as follows:
a boiler flue gas emission and purification system comprises a system body, wherein a flue gas outlet is formed in the top end of the system body, a slurry pool 2 is formed in the bottom end of the system body, and a rotary-convergence coupling part, a spraying part and a tube bundle type dust removal part are sequentially arranged from bottom to top; a flue gas inlet 5 is arranged below the rotary-converging coupling part;
the rotary-convergence coupling part is a rotary-convergence coupler 6;
the technology is based on a strong mass transfer mechanism of multiphase turbulent mixing, utilizes a gas dynamics principle, generates a gas-liquid rotating turnover turbulent space through a rotary convergence coupling facility, fully contacts gas-liquid-solid three phases, and rapidly finishes a mass transfer process, thereby achieving the purpose of gas purification;
the spraying part is a U-shaped spraying pipe 8 horizontally arranged between the system bodies, the bottom end of the U-shaped spraying pipe 8 is provided with an alkali liquor inlet 7, and the top end of the U-shaped spraying pipe 8 is placed on the bracket 1;
the number of the U-shaped spray pipes 8 is at least 2, and each U-shaped spray pipe 8 is arranged in parallel from top to bottom;
two rows of spraying branch pipes are arranged on two sides of the U-shaped spraying pipe 8 in the direction perpendicular to the U-shaped spraying pipe 8, the two rows of spraying branch pipes are positioned on the same horizontal plane, and spray heads 13 are arranged on the spraying branch pipes;
the spraying branch pipes on the same side are divided into two groups with different lengths, the two long spraying branch pipes 15 are positioned on the inner side, and the two short spraying branch pipes 12 are positioned on the outer side, so that short-long arrangement is formed;
a first valve 16 is arranged at the top end of the U-shaped spray pipe 8;
the top end of the long spraying branch pipe is provided with a second valve 14;
above-mentioned spray portion's design has effectively increased the area that sprays, and the design of different length branch pipes satisfies spraying of different diameter scopes, and the design of multilayer U type shower 8 makes the flue gas that different longitudes can be handled to the alkali lye that sprays.
The tube bundle type dust removing part is composed of a plurality of vertical tubes 9 which are arranged in parallel, the interior of each tube 9 is designed to be convex, the ascending speed of airflow can be slowed down, and liquid drops are formed in the tubes.
A washing pipe 11 is arranged above the tube bundle type dust removing part, the washing pipe 11 is arranged above the tube bundle type dust removing part in parallel, and a water inlet 10 is arranged at one end of the washing pipe 11.
The lower part setting of thick liquid pond 2, thick liquid export 3 installs screen cloth 4 on thick liquid pond 2 inside and thick liquid export 3, avoids passing through the process that thick liquid export took out the thick liquid at the pump, because turbulence etc. arouses the internal gas pressure change of system, and influences the treatment effect of flue gas.
The alkali liquor inlet 7 is connected with an alkali liquor pool through a pump, boiler flue gas enters the system body from the flue gas inlet 5, and passes through the rotary convergence coupling part along with the rising of the flue gas, a gas-liquid rotating and overturning turbulent flow space is generated through a rotary convergence coupling facility based on a strong mass transfer mechanism of multiphase turbulent flow mixing by utilizing a gas dynamics principle, and gas-liquid-solid three phases are fully contacted to quickly finish a mass transfer process, so that the aim of gas purification is fulfilled; meanwhile, the U-shaped spray pipe sprays alkali liquor, acidic gas in the flue gas meets the alkali liquor and then is neutralized, and the obtained neutral liquid flows into the slurry pool; the reserved part of flue gas continuously rises to meet the tubular dust removal part and is blocked by the protrusion in the pipe, the flue gas is condensed to form liquid drops to be condensed in the pipe, after a period of time, clear water is filled in the washing pipe 11 through the water inlet 10 to clean the condensed liquid drops in the pipe and flow into the slurry pool 2, and after the slurry pool 2 reaches a certain storage amount, slurry is pumped out by a pump.
The system effectively realizes the purification of the boiler flue gas by utilizing the synergistic effect of a plurality of means.
Drawings
FIG. 1 is a schematic diagram of a boiler flue gas emission purification system;
FIG. 2 is a schematic structural view of a U-shaped shower pipe;
FIG. 3 is a schematic structural diagram of the rotary union coupler 6;
fig. 4 is a partially enlarged view of a portion a in fig. 1.
Reference numerals
The device comprises a support 1, a slurry tank 2, a slurry outlet 3, a screen 4, a flue gas inlet 5, a rotary converging coupler 6, an alkali liquor inlet 7, a spray pipe 8U-shaped, a pipe 9, a water inlet 10, a cleaning pipe 11, a short branch pipe 12, a spray head 13, a second valve 14, a long branch pipe 15 and a first valve 16.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to FIGS. 1 to 3,
a boiler flue gas emission and purification system comprises a system body, wherein a flue gas outlet is formed in the top end of the system body, a slurry pool 2 is formed in the bottom end of the system body, and a rotary-convergence coupling part, a spraying part and a tube bundle type dust removal part are sequentially arranged from bottom to top; a flue gas inlet 5 is arranged below the rotary-converging coupling part;
the rotary-convergence coupling part is a rotary-convergence coupler 6;
the technology is based on a strong mass transfer mechanism of multiphase turbulent mixing, utilizes a gas dynamics principle, generates a gas-liquid rotating turnover turbulent space through a rotary convergence coupling facility, fully contacts gas-liquid-solid three phases, and rapidly finishes a mass transfer process, thereby achieving the purpose of gas purification;
the spraying part is a U-shaped spraying pipe 8 horizontally arranged between the system bodies, the bottom end of the U-shaped spraying pipe 8 is provided with an alkali liquor inlet 7, and the top end of the U-shaped spraying pipe 8 is placed on the bracket 1;
the number of the U-shaped spray pipes 8 is at least 2, and each U-shaped spray pipe 8 is arranged in parallel from top to bottom;
two rows of spraying branch pipes are arranged on two sides of the U-shaped spraying pipe 8 in the direction perpendicular to the U-shaped spraying pipe 8, the two rows of spraying branch pipes are positioned on the same horizontal plane, and spray heads 13 are arranged on the spraying branch pipes;
the spraying branch pipes on the same side are divided into two groups with different lengths, the two long spraying branch pipes 15 are positioned on the inner side, and the two short spraying branch pipes 12 are positioned on the outer side, so that short-long arrangement is formed;
a first valve 16 is arranged at the top end of the U-shaped spray pipe 8;
the top end of the long spraying branch pipe is provided with a second valve 14;
above-mentioned spray portion's design has effectively increased the area that sprays, and the design of different length branch pipes satisfies spraying of different diameter scopes, and the design of multilayer U type shower 8 makes the flue gas that different longitudes can be handled to the alkali lye that sprays.
The tube bundle type dust removing part is composed of a plurality of vertical tubes 9 which are arranged in parallel, the interior of each tube 9 is designed to be convex, the ascending speed of airflow can be slowed down, and liquid drops are formed in the tubes.
A washing pipe 11 is arranged above the tube bundle type dust removing part, the washing pipe 11 is arranged above the tube bundle type dust removing part in parallel, and a water inlet 10 is arranged at one end of the washing pipe 11.
The lower part setting of thick liquid pond 2, thick liquid export 3 installs screen cloth 4 on thick liquid pond 2 inside and thick liquid export 3, avoids passing through the process that thick liquid export took out the thick liquid at the pump, because turbulence etc. arouses the internal gas pressure change of system, and influences the treatment effect of flue gas.
The alkali liquor inlet 7 is connected with an alkali liquor pool through a pump, boiler flue gas enters the system body from the flue gas inlet 5, and passes through the rotary convergence coupling part along with the rising of the flue gas, a gas-liquid rotating and overturning turbulent flow space is generated through a rotary convergence coupling facility based on a strong mass transfer mechanism of multiphase turbulent flow mixing by utilizing a gas dynamics principle, and gas-liquid-solid three phases are fully contacted to quickly finish a mass transfer process, so that the aim of gas purification is fulfilled; meanwhile, the U-shaped spray pipe sprays alkali liquor, acidic gas in the flue gas meets the alkali liquor and then is neutralized, and the obtained neutral liquid flows into the slurry pool; the reserved part of flue gas continuously rises to meet the tubular dust removal part and is blocked by the protrusion in the pipe, the flue gas is condensed to form liquid drops to be condensed in the pipe, after a period of time, clear water is filled in the washing pipe 11 through the water inlet 10 to clean the condensed liquid drops in the pipe and flow into the slurry pool 2, and after the slurry pool 2 reaches a certain storage amount, slurry is pumped out by a pump.
The system effectively realizes the purification of the boiler flue gas by utilizing the synergistic effect of a plurality of means.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (5)

1. A boiler flue gas emission and purification system is characterized by comprising a system body, wherein a flue gas outlet is formed in the top end of the system body, a slurry pool (2) is formed in the bottom end of the system body, and a rotary-converging coupling part, a spraying part and a tube bundle type dust removal part are sequentially arranged from bottom to top; a flue gas inlet (5) is arranged below the rotary-converging coupling part; the spraying part is a U-shaped spraying pipe (8) horizontally arranged between the system bodies, the bottom end of the U-shaped spraying pipe (8) is provided with an alkali liquor inlet (7), and the top end of the U-shaped spraying pipe (8) is placed on the bracket (1); the number of the U-shaped spray pipes (8) is at least 2, and each U-shaped spray pipe (8) is arranged in parallel from top to bottom; two rows of spraying branch pipes are arranged on two sides of the U-shaped spraying pipe (8) in the direction vertical to the U-shaped spraying pipe (8), the two rows of spraying branch pipes are positioned on the same horizontal plane, and spray heads (13) are arranged on the spraying branch pipes; the spraying branch pipes on the same side are divided into two groups with different lengths, the two long spraying branch pipes (15) are positioned on the inner side, and the two short spraying branch pipes (12) are positioned on the outer side, so that short and long arrangements are formed.
2. The boiler flue gas emission cleaning system according to claim 1, wherein the rotary union coupling part is a rotary union coupler (6).
3. The boiler flue gas emission cleaning system according to claim 1, wherein said tube bundle dust removing unit is composed of a plurality of vertical tubes (9) arranged in parallel, and the inside of said tubes (9) is of a convex design.
4. The boiler flue gas emission purification system according to claim 1, wherein a washing pipe (11) is disposed above the tube bundle dust removing part, the washing pipe (11) is disposed in parallel above the tube bundle dust removing part, and a water inlet (10) is disposed at one end of the washing pipe (11).
5. The boiler flue gas emission purification system according to claim 1, wherein a slurry outlet (3) is provided at a lower portion of the slurry tank (2), and a screen (4) is installed inside the slurry tank (2) and on the slurry outlet (3).
CN201921179525.0U 2019-07-25 2019-07-25 Boiler flue gas emission and purification system Active CN210934450U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921179525.0U CN210934450U (en) 2019-07-25 2019-07-25 Boiler flue gas emission and purification system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921179525.0U CN210934450U (en) 2019-07-25 2019-07-25 Boiler flue gas emission and purification system

Publications (1)

Publication Number Publication Date
CN210934450U true CN210934450U (en) 2020-07-07

Family

ID=71375455

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921179525.0U Active CN210934450U (en) 2019-07-25 2019-07-25 Boiler flue gas emission and purification system

Country Status (1)

Country Link
CN (1) CN210934450U (en)

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