CN217431371U

CN217431371U - Smoke tail gas treatment system

Info

Publication number: CN217431371U
Application number: CN202221335398.0U
Authority: CN
Inventors: 陆启庭
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2022-09-16
Anticipated expiration: 2032-05-31

Abstract

The utility model discloses a smog tail gas processing system, industry environmental protection field, including a plurality of washing rooms and the desulfurization room that spray of intercommunication, there is a filter screen clean room before spraying the washing room, it has the cooling chamber to spray between washing room and the desulfurization room, and the desulfurization room is the freezing refrigeration room of forced cooling, and the freezing refrigeration room of forced cooling is equipped with the cooling tube that multirow loopback intercommunication in the indoor that is equipped with of forced cooling, and the freezing indoor temperature of refrigeration of forced cooling is-35-/-60 ℃; a liquid discharge pipeline is arranged below the cooling pipe and is communicated with a sulfur storage liquid pool, the forced cooling freezing refrigeration chamber is communicated with a cold circulating pipe through a tail gas exhaust process control pipe, an exhaust fan is arranged on the cold circulating pipe, and a discharge port of the cold circulating pipe extends into the cooling chamber; the smoke tail gas of the technology travels in a cooling pipe in a forced cooling freezing refrigeration chamber, after the temperature is reduced to-20 ℃, the sulfur dioxide in the tail gas is liquefied and then discharged into a sulfur storage liquid pool, and alkali is put into the sulfur storage liquid pool for desulfurization, so that the aims of centralized desulfurization, alkali loss reduction and cost reduction are fulfilled.

Description

Smoke tail gas treatment system

Technical Field

The utility model belongs to the technical field of the industry environmental protection technique and specifically relates to a smog tail gas processing system.

Background

Industrial pollution refers to the pollution of waste gas, waste water and solid emissions formed in the industrial production process to the environment, and the industrial pollution is mainly concentrated in the chemical industry, the steel industry, the electric power industry, the paper industry, the smelting industry, the textile industry and the like. In the high-speed development process of industry, industrial production can produce a large amount of waste gas, can have a large amount of dust and flue gas in the waste gas that the blast furnace discharged, often can contain sulfur dioxide and carry a large amount of heat sources simultaneously in the flue gas, cause serious pollution to the surrounding environment, also can cause harm to human health. The current national requirements for environmental protection are more and more strict, and higher requirements are put forward for industrial waste gas, and the general treatment process is required: spraying washing, dust removal and acid mist oil fume treatment, and a large amount of alkali is put in for desulfurization, so that the treatment cost is high, new waste liquid or waste solid can be generated in the treatment process, and the full purification effect cannot be achieved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a smog tail gas processing system is provided, it can solve current incomplete problem of exhaust-gas treatment for its processing system.

In order to solve the above problem, the utility model discloses the technical scheme who adopts is: the device comprises a plurality of spraying washing chambers and a plurality of desulfurizing chambers, wherein the spraying washing chambers are communicated with the desulfurizing chambers, a filtering and dedusting chamber which is communicated with each other is arranged in front of the spraying washing chambers, a cooling chamber is arranged between the spraying washing chambers and the desulfurizing chambers, the desulfurizing chambers are strong-cooling freezing refrigerating chambers, a plurality of rows of cooling pipes which are communicated in a circulating manner are arranged in the strong-cooling freezing refrigerating chambers, and the temperature in the strong-cooling freezing refrigerating chambers is-35 ℃ to-60 ℃; the cooling pipe is provided with a liquid drainage pipeline, the liquid drainage pipeline is communicated with a sulfur storage liquid pool, the last cooling pipe of the forced freezing refrigeration chamber is communicated with a tail gas exhaust program control pipe arranged outside the forced freezing refrigeration chamber, the tail gas exhaust program control pipe is communicated with a cold circulating pipe, a first exhaust fan is arranged on the cold circulating pipe in an assembled mode, and a discharge port of the cold circulating pipe extends into the cooling chamber.

In the above technical solution, a more specific technical solution may also be: the air inlet of the filter screen dust removal chamber is connected with the exhaust pipe through a second exhaust fan, the number of the spraying washing chambers is four, the spraying washing chamber communicated with the filter screen dust removal chamber is a first spraying washing chamber, the spraying washing chamber communicated with the first spraying washing chamber is a second spraying washing chamber, the top of the position, close to the air inlet, in the second spraying washing chamber is communicated with an oxygen supply combustion-supporting pipeline, the oxygen supply combustion-supporting pipeline is communicated with a boiler combustion chamber, and a third exhaust fan is arranged on the oxygen supply combustion-supporting pipeline; the spraying washing chamber is provided with a plurality of water spray nozzles which are arranged towards the direction of the air outlet.

Further: the forced cooling freezing chamber is vertically provided with nine-eighteen cooling pipes which are respectively arranged into fourteen rows, each row of seven cooling pipes is communicated with the adjacent cooling pipes in the same row end to end or tail to tail, and the last cooling pipe in the same row is communicated with the adjacent cooling pipes in the next row end to end or tail to tail; and a switch valve is arranged at the top end of the tail gas exhaust program control pipe, and a side port of the tail gas exhaust program control pipe is communicated with the cold circulating pipe.

Further: each cooling tube has a diameter of 0.4 m and a length of 7.1 m.

Further: the two adjacent cooling pipes are communicated in a sleeved mode through a pipe sleeve head, the pipe sleeve head is provided with a transverse pipe, short vertical pipes are arranged at two ends of the transverse pipe, and the inner diameter of each short vertical pipe is larger than the outer diameter of each cooling pipe.

Further: the length, width and height of the filter sieve dust removing chamber, each spray washing chamber and each cooling chamber are 4 meters multiplied by 6 meters multiplied by 8 meters, and the total volume is 192 cubic meters; the length, width and height of the forced cooling freezing refrigeration chamber are 6 meters multiplied by 8 meters, and the total volume is 288 cubic meters.

Further: the forced cooling freezing refrigeration chamber is made of firebricks, and the inner wall of the forced cooling freezing refrigeration chamber is a fireproof heat-insulating layer with the thickness of 36 cm.

Further: the internal diameter of the liquid discharge pipeline is 0.04 meter.

Since the technical scheme is used, compared with the prior art, the utility model following beneficial effect has:

because the desulfurization chamber is a strong-cooling freezing refrigeration chamber, the temperature of the refrigeration chamber is-20 ℃ to-60 ℃, smoke tail gas after being cooled in the cooling chamber firstly travels in the cooling pipe which is communicated with the loop in the strong-cooling freezing refrigeration chamber, sulfur dioxide in the tail gas can be liquefied after the temperature is reduced to-20 ℃, the smoke tail gas enters a sulfur storage liquid pool from the cooling pipe through a liquid discharge pipeline, and the sulfur can be desulfurized by adding alkali in the sulfur storage liquid pool, thereby achieving the purposes of concentrated desulfurization, alkali loss reduction and cost reduction; the tail gas in the strong-cooling freezing refrigeration chamber finally returns to the cooling chamber through the cold circulating pipe, so that cold air is provided for the cooling chamber, and the tail gas can enter the strong-cooling freezing refrigeration chamber again for desulfurization, and the desulfurization is thorough without residues.

Drawings

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

Fig. 2 is a top view of the cooling pipe arrangement of the forced cooling and freezing refrigeration chamber of the present invention.

Fig. 3 is a front view of the pipe sleeve head on the cooling pipe sleeve of the forced cooling freezing refrigeration chamber of the invention.

Fig. 4 is a schematic diagram of the flow direction of the exhaust gas of the present invention.

Fig. 5 is a schematic structural view of the catheter hub of the present invention.

Description of the sequence numbers:

the device comprises a first spraying washing chamber 1, a second spraying washing chamber 2, a third spraying washing chamber 3, a fourth spraying washing chamber 4, a filter screen dust removal chamber 5, a cooling chamber 6, a forced cooling freezing refrigeration chamber 7, a second exhaust fan 8, an exhaust pipe 9, an oxygen supply combustion-supporting pipeline 10, a third exhaust fan 11, a cooling pipe 12, a conduit sleeve head 13, a transverse pipe 13-1, a short vertical pipe 13-2, a liquid discharge pipeline 14, a sulfur storage liquid pool 15, a first exhaust fan 16, a tail gas exhaust program control pipe 17 and a cold circulation pipe 18.

Detailed Description

The invention will be described in more detail with reference to the following embodiments:

as shown in fig. 1, 2 and 3, the embodiment 1 includes a sieve dust chamber 5, four spray washing chambers and a cooling chamber 6 for lowering temperature, and a desulfurization chamber, the desulfurization chamber is a freezing refrigeration chamber 7 for strong cooling, the spray washing chambers are respectively a first spray washing chamber 1, a second spray washing chamber 2, a third spray washing chamber 3 and a fourth spray washing chamber 4, each spray washing chamber is provided with a plurality of water spray nozzles (not shown), the water spray nozzles are arranged towards the air outlet direction of each spray washing chamber, so that the tail gas can be conveniently pushed to flow along the pressure while the tail gas is sprayed with water for lowering the temperature; the length, width and height of the filter sieve dust removal chamber, each spray washing chamber and each cooling chamber are 6 meters multiplied by 4 meters multiplied by 8 meters, and the total volume is 192 cubic meters; an air inlet of the filter screen dust removal chamber 5 is connected with an exhaust pipe 9 through a second exhaust fan 8, the air inlet of the filter screen dust removal chamber 5 is arranged at the lower part of one side wall of the filter screen dust removal chamber, an air outlet of the filter screen dust removal chamber 5 is arranged at the upper part of the side wall of the filter screen dust removal chamber adjacent to the first spray washing chamber, and meanwhile, the air inlet of the first spray washing chamber 1 is formed; the air outlet of the first spray washing chamber 1 is arranged at the lower part of the adjacent side wall of the first spray washing chamber 1 and the second spray washing chamber 2, and simultaneously forms the air inlet of the second spray washing chamber 2, the top part of the second spray washing chamber 2 close to the air inlet is communicated with an oxygen supply combustion-supporting pipeline 10 which is communicated with a boiler combustion chamber, a third exhaust fan 11 is arranged on the oxygen supply combustion-supporting pipeline 10, when high-temperature tail gas is dedusted from a filter screen dedusting chamber, enters the first spray washing chamber and is sprayed by clean water to generate a large amount of water vapor, the water vapor and the tail gas enter the second spray washing chamber from the air outlet at the lower part of the first spray washing chamber and rapidly rise, part of the high-temperature water vapor and the high-temperature tail gas are pressed into a combustion-supporting pipe and enter the boiler combustion chamber to support combustion, and the rest of the water vapor and the tail gas continue to enter the third spray washing chamber 3 from the air outlet at the upper part of the adjacent side wall of the second spray washing chamber 2 and the third spray washing chamber 3, after the third spraying and washing chamber 3 is sprayed with water, the tail gas is slowly cooled, and continuously enters the fourth spraying and washing chamber 4 through an air outlet arranged at the lower part of the side wall, adjacent to the third spraying and washing chamber 3 and the fourth spraying and washing chamber 4, after the fourth spraying and washing chamber 4 is sprayed with water, the tail gas is continuously cooled, each spraying and washing chamber can wash the dust which is not completely removed in the previous spraying and washing chamber, the dust falls into the spraying and washing chamber, the dust flows out of the spraying and washing chamber and enters a sludge pond (not shown), the tail gas which is washed and cooled by four spraying and washing chamber nozzles continues to enter a cooling chamber 6 through an air outlet arranged at the upper part of the side wall, adjacent to the cooling chamber 6, of the fourth spraying and washing chamber 4, the tail gas flows slowly through cold air after being cooled in the cooling chamber, and finally the tail gas enters a freezing chamber 6, adjacent to the strong cold freezing chamber 7, through an air outlet arranged at the lower part of the side wall, adjacent to the strong cold freezing chamber 7, of the cooling chamber 6 7 in the head pipe of the cooling pipe; the strong cold freezing refrigeration chamber is built by fire bricks, the inner wall of the strong cold freezing refrigeration chamber is a fireproof heat-insulating layer with the thickness of 36 cm, the length, the width and the height of the strong cold freezing refrigeration chamber are 6 m multiplied by 8 m, the space volume is 288 cubic meter, 14 rows of cooling pipes 12 which are communicated in a loop manner are vertically arranged in the strong cold freezing refrigeration chamber, each row is provided with seven cooling pipes, the outer diameter of each cooling pipe is 0.4 m, the length of each cooling pipe is 7.1 m, the adjacent cooling pipes in the same row are firstly communicated through the sleeve 12 of the guide pipe in a sleeved manner, then the tail and the tail are communicated through the sleeve of the guide pipe in a sleeved manner, and then the cooling pipes are firstly communicated through the sleeve of the guide pipe in a sleeved manner, so that the cooling pipes form a loop traveling shape; the conduit sleeve head 13 is provided with a transverse pipe 13-1, the two ends of the transverse pipe are provided with short vertical pipes, the inner diameter of each short vertical pipe is slightly larger than the outer diameter of each cooling pipe, so that the cooling pipes can be directly installed and inserted into the short vertical pipes and are stably fixed, and the last cooling pipe in the same row is communicated with the adjacent cooling pipes in the next row end to end or the last cooling pipe in the same row is communicated with the adjacent cooling pipes in the next row; a liquid drainage pipeline 14 is arranged below each row of cooling pipes, a liquid outlet is formed in the bottom of a transverse pipe which connects tail ends of the cooling pipes, the liquid outlet is communicated with the liquid drainage pipeline, and the liquid drainage pipeline is communicated with a closed sulfur storage liquid pool 15 arranged outdoors; the temperature in the forced cooling freezing refrigeration chamber is-35 ℃ to-60 ℃, an industrial ultralow temperature type industrial water chiller is adopted for refrigeration, tail gas slowly circulates and gradually cools and freezes in a cooling pipe, the flow of the tail gas is slower, the pressure is low, in order to enable the tail gas to continue operation, a first exhaust fan 16 arranged on a cold circulating pipe 18 is opened, the wind speed is set to be 1.4 meters per second, the tail gas circulates and travels in the cooling pipe of the forced cooling freezing refrigeration chamber, when the temperature of the tail gas is reduced to be lower than-10 ℃, sulfur dioxide is liquefied and flows to the bottom of the cooling pipe 12 in a concentrated mode, the tail gas enters a closed sulfur storage liquid pool 15 arranged outdoors from a liquid discharge pipeline 14 below the cooling pipe, the inner diameter of the liquid discharge pipeline 14 is 0.04 meters, a water outlet of the liquid discharge pipeline 14 is provided with a valve, the sulfur storage liquid pool 15 is arranged in a closed mode according to flow regulation control operation, the escape of cold gas and the volatilization of the sulfur dioxide can be avoided, alkali is put into the sulfur storage liquid pool 15 for desulfurization, so that the alkali loss can be reduced, the cost is saved, and the desulfurization is more thorough; when the tail gas comes out from the last pipeline of the cooling pipe, the tail gas enters a tail gas exhaust program control pipe 17 arranged outside the forced cooling freezing refrigeration chamber 7 and then flows into a cold circulating pipe 18 to enter a cooling chamber, so that cold gas is provided for the cooling chamber, and the cold gas can be recycled; the top end of the tail gas exhaust program control pipe is provided with a switch valve which can be opened as required to exhaust the cold air to the outside.

Claims

1. The utility model provides a smog tail gas processing system, includes a plurality of scrubbing chambers and desulfurization chamber that spray, spray the scrubbing chamber with the desulfurization chamber communicates each other, its characterized in that: a mutually communicated screen dust removal chamber is arranged in front of the spray washing chamber, a cooling chamber is arranged between the spray washing chamber and the desulfurization chamber, the desulfurization chamber is a strong-cooling freezing refrigeration chamber, a plurality of rows of cooling pipes which are communicated in a circulating manner are arranged in the strong-cooling freezing refrigeration chamber, and the temperature in the strong-cooling freezing refrigeration chamber is-35 ℃ to-60 ℃; the cooling tube is provided with a liquid discharge pipeline, the liquid discharge pipeline is communicated with a closed sulfur storage liquid pool arranged outdoors, the last cooling tube of the forced freezing refrigeration chamber is communicated with a tail gas exhaust program control tube arranged outside the forced freezing refrigeration chamber, the tail gas exhaust program control tube is communicated with a cold circulating tube, a first exhaust fan is arranged on the cold circulating tube, and a discharge port of the cold circulating tube extends into the cooling chamber.

2. The smoke exhaust treatment system according to claim 1, wherein: the air inlet of the filter screen dust removal chamber is connected with the exhaust pipe through a second exhaust fan, the number of the spraying washing chambers is four, the spraying washing chamber communicated with the filter screen dust removal chamber is a first spraying washing chamber, the spraying washing chamber communicated with the first spraying washing chamber is a second spraying washing chamber, the top of the position, close to the air inlet, in the second spraying washing chamber is communicated with an oxygen supply combustion-supporting pipeline, the oxygen supply combustion-supporting pipeline is communicated with a boiler combustion chamber, and a third exhaust fan is arranged on the oxygen supply combustion-supporting pipeline; the spraying washing chamber is provided with a plurality of water spray nozzles which are arranged towards the direction of the air outlet.

3. The smoke exhaust treatment system according to claim 2, wherein: the forced cooling freezing chamber is vertically provided with nine-eighteen cooling pipes which are respectively arranged into fourteen rows, each row of seven cooling pipes is communicated with the adjacent cooling pipes in the same row end to end or tail to tail, and the last cooling pipe in the same row is communicated with the adjacent cooling pipes in the next row end to end or tail to tail; and a switch valve is arranged at the top end of the tail gas exhaust program control pipe, and a side port of the tail gas exhaust program control pipe is communicated with the cold circulating pipe.

4. The smoke exhaust treatment system according to claim 3, wherein: each cooling tube has an inner diameter of 0.4 m and a length of 7.1 m.

5. The smoke exhaust treatment system according to claim 4, wherein: the two adjacent cooling pipes are communicated in a sleeved mode through a pipe sleeve head, the pipe sleeve head is provided with a transverse pipe, short vertical pipes are arranged at two ends of the transverse pipe, and the inner diameter of each short vertical pipe is larger than the outer diameter of each cooling pipe.

6. The smoke exhaust treatment system according to claim 5, wherein: the length, width and height of the filter sieve dust removing chamber, each spray washing chamber and each cooling chamber are 6 meters multiplied by 4 meters multiplied by 8 meters, and the total volume is 192 cubic meters; the length, width and height of the forced cooling freezing refrigeration chamber are 6 meters multiplied by 8 meters, and the total volume is 288 cubic meters.

7. The smoke exhaust treatment system according to claim 6, wherein: the forced cooling freezing refrigeration chamber is made of firebricks, and the inner wall of the forced cooling freezing refrigeration chamber is a fireproof heat-insulating layer with the thickness of 36 cm.

8. The smoke exhaust treatment system according to claim 1, wherein: the internal diameter of the liquid discharge pipeline is 0.04 meter.