CN216418908U

CN216418908U - Civil environment-friendly flue gas desulfurization dust collector

Info

Publication number: CN216418908U
Application number: CN202123018179.8U
Authority: CN
Inventors: 王兴兴; 毕一明
Original assignee: Dalian Brewer Technology Co ltd
Current assignee: Dalian Brewer Technology Co ltd
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-05-03
Anticipated expiration: 2031-12-03

Abstract

The utility model provides a civil environment-friendly flue gas desulfurization and dust removal device, which comprises a cylinder body, wherein the cylinder wall at the upper part of the cylinder body is provided with an exhaust hole; a cylinder cavity is formed inside the cylinder body, the upper part of the cylinder cavity is communicated with a desulfurizer spraying system arranged outside the cylinder body through a fourth pipeline, and the outlet end of the fourth pipeline penetrates through the cylinder wall and is arranged at the upper part of the cylinder cavity; and a packing layer and a support grid are sequentially arranged in a cylinder cavity at the lower part of the outlet end of the fourth pipeline, and a second pipeline communicated with the cylinder cavity is arranged on the cylinder wall at the lower part of the support grid. The utility model discloses can effectively get rid of the sulfur dioxide gas and the dust that produce after low sulfur coal or the high sulfur coal burning, effectively alleviate atmospheric environment pressure, also can alleviate government and user's economic pressure.

Description

Civil environment-friendly flue gas desulfurization dust collector

Technical Field

The utility model relates to an environmental protection equipment field especially relates to a civilian environment-friendly flue gas desulfurization dust collector.

Background

The energy structure of China is rich coal, little oil and poor gas, wherein the coal mainly comprises high-sulfur coal (the sulfur content is more than 3 percent), the content of low-sulfur coal (the sulfur content is between 0.51 and 1 percent) is relatively low, and the reserve of extra-low-sulfur coal with the sulfur content of less than 0.5 percent is very limited. Sulfur dioxide emitted from coal is one of the main sources of environmental acid rain and atmospheric pollution. At present, due to the requirement of national environmental protection policy, the coal for civil heating in north generally adopts the ultra-low sulfur coal to meet the sulfur dioxide environmental protection emission standard, thereby causing the ultra-low sulfur coal to be insufficient in supply and expensive, the high sulfur coal and the common low sulfur coal to be insufficient in demand kinetic energy, and the burden and the pressure of governments and users of the ultra-low sulfur coal are very large. Meanwhile, the utilization of high-sulfur coal is also greatly limited. Usually, high-sulfur coal for combustion and common low-sulfur coal must be treated by a flue gas desulfurization device and can be discharged after reaching the emission standard, for example, large-scale thermoelectric companies are currently provided with flue gas desulfurization devices for removing sulfur dioxide. However, large industrial desulfurization devices are too complex and expensive to be suitable for civil use, and the civil flue gas desulfurization devices are in a technical blank state at present, so that the flue gas desulfurization devices can meet the requirement that civil heating burning high-sulfur coal and common low-sulfur coal can still meet the sulfur dioxide environmental protection emission standard, and the atmospheric environmental pressure and the government and user economic pressure can be greatly relieved.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a civilian environment-friendly flue gas desulfurization dust collector, the utility model discloses mainly utilize the water that contains the desulfurizer and the flue gas that contains sulfur dioxide fully to contact in the packing layer to play harmful substance such as sulfur dioxide and dust in getting rid of the flue gas. The utility model discloses a technical means as follows: the device comprises a cylinder body, wherein the cylinder wall of the upper part of the cylinder body is provided with an exhaust hole; a cylinder cavity is formed inside the cylinder body, the upper part of the cylinder cavity is communicated with a desulfurizer spraying system arranged outside the cylinder body through a fourth pipeline, and the outlet end of the fourth pipeline penetrates through the cylinder wall and is arranged at the upper part of the cylinder cavity; and a packing layer and a support grid are sequentially arranged in a cylinder cavity at the lower part of the outlet end of the fourth pipeline, and a second pipeline communicated with the cylinder cavity is arranged on the cylinder wall at the lower part of the support grid.

Further, an air cooler communicated with the cylinder cavity is arranged on the cylinder wall outside the exhaust hole, and a sulfur dioxide concentration detector is arranged in the air cooler; the desulfurizer spraying system comprises a desulfurizer liquid storage tank arranged outside the cylinder, a water pump is arranged outside the desulfurizer liquid storage tank, and the water pump is arranged in a fourth pipeline arranged outside the cylinder; the outlet end of the fourth pipeline arranged in the cylinder cavity is provided with a spray header; an induced draft fan is arranged in the second pipeline; a liquid discharge hole is formed in the bottom of the cylinder body; the second pipeline is arranged in the cylinder cavity, and the opening of the second pipeline faces downwards.

Furthermore, a demister and a demister are arranged in a cylinder cavity at the upper part of the spray header, a liquid distribution disc is arranged in a cylinder cavity at the lower part of the spray header, and fixed gratings are arranged in cylinder cavities at the lower end of the liquid distribution disc and the upper end of the packing layer; and a gas distribution disc is arranged between the lower end of the support grid and the outlet end of the second pipeline in the barrel cavity.

Furthermore, the induced draft fan is a centrifugal fan, an air outlet is formed in the pipeline of the second pipeline on the outer side of the air inlet end of the induced draft fan, and a gate valve is installed in the air outlet; and a liquid level transmitter is arranged in the desulfurizer liquid storage tank and communicated with a third pipeline, and an automatic water replenishing valve is arranged in the third pipeline.

Furthermore, a heating temperature control device is arranged in the desulfurizer liquid storage tank, a heat preservation room is built outside the desulfurizer liquid storage tank, and a heater is arranged in the heat preservation room.

Furthermore, the bottom of the cylinder body is provided with a plurality of supporting legs, a liquid discharge hole in the bottom of the cylinder body is communicated with a first pipeline, and the outlet end of the first pipeline is arranged in the desulfurizer liquid storage tank.

Furthermore, a rain hat is arranged at the top of the air cooler.

The utility model has the advantages of it is following:

1. the sulfur dioxide and dust generated in the combustion of common low-sulfur coal or high-sulfur coal are effectively removed, so that the common low-sulfur coal or high-sulfur coal is used for civil coal combustion to replace ultra-low-sulfur coal, the atmospheric environmental pressure is relieved, the economic pressure of governments and users can be relieved, and the reasonable application of coal resources is promoted.

2. Simple structure, simple operation and low price, is more suitable for civil use, and the used magnesium hydroxide desulfurizer is safe and reliable.

3. The air cooler can condense the water in the desulfurizer through cold air and flow back to the flue gas desulfurization device, zero water supplement or a small amount of water supplement of the device can be realized, and the device cannot stop working due to water shortage in the device caused by long-time operation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

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

In the figure: 100. a barrel; 101. a support leg; 102. a support grid; 103. a gas distribution plate; 104. a filler layer; 105. fixing the grating; 106. a liquid distribution tray; 107. a cylinder cavity 108 and a demister; 109. a demister; 110. a first conduit; 201. an induced draft fan; 202. a gate valve; 203. an air outlet; 204. a second conduit; 301. an air cooler; 302. a rain-proof cap; 303. a sulfur dioxide concentration detector; 601. a desulfurizing agent liquid storage tank; 602. heating a temperature control device; 603. a liquid level transmitter; 604. a third pipeline; 605. an automatic water replenishing valve; 606. a water pump; 607, a fourth conduit; 608. a spray header 701 and a thermal room; 702. a heater.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a civil environment-friendly flue gas desulfurization dust collector, including the barrel 100, the cross section of the barrel 100 can be circular, square or polygonal, the diameter of the barrel 100 can be selected according to the amount of the sulfur-containing flue gas treated within the range of 5-100cm, the material of the barrel 100 is one or the combination of several of carbon steel, stainless steel, glass fiber reinforced plastics, plastics and other materials; the top of the cylinder 100 can be flat or arched; one or more vent holes are formed in the top of the cartridge 100, and the embodiment is illustrated as having one vent hole; a cylinder cavity 107 is naturally formed in the cylinder 100, the upper part of the cylinder cavity 107 is communicated with a desulfurizer spraying system which is arranged outside the cylinder 100 and is mainly arranged on the cylinder 100 through a fourth pipeline 607, the outlet end of the fourth pipeline 607 penetrates through the cylinder wall and is arranged on the upper part of the cylinder cavity 107, the preferred mode is that the cylinder cavity 107 is communicated with the side wall of the cylinder 100, the contact part of the fourth pipeline 607 and the cylinder wall is sealed, and the inner diameter of the fourth pipeline 607 can be selected within the range of 3-50 mm; the desulfurizer spraying system supplies desulfurizer solvent into the cylinder cavity 107, and the desulfurizer can be one or more of sodium hydroxide, sodium hydroxide/sodium carbonate, ammonia water, magnesium hydroxide, brucite, magnesium oxide and magnesium carbonate; a packing layer 104 and a support grid 102 are sequentially arranged in a cylinder cavity 107 at the lower part of the outlet end of a fourth pipeline 607, the packing in the packing layer 104 can be Raschig rings, pall rings, saddle-shaped packing, spherical packing or structured packing, the size of a single packing is 5-80 mm, and the used materials are carbon steel, stainless steel, glass fiber reinforced plastic and plastic; the edge of the support grid 102 is fixed on the inner wall of the cylinder 100, the support grid 102 can be a grid-shaped support plate which supports the filler layer 104 thereon; a second pipeline 204 communicated with the cylinder cavity 107 is arranged on the cylinder wall at the lower part of the support grid 102, the contact part of the second pipeline 204 and the cylinder wall is sealed, and the second pipeline 204 brings sulfur-containing flue gas generated after coal combustion and a part of dust into the cylinder cavity 107 for desulfurization and dust removal treatment.

As a preferable embodiment, an air cooler 301 communicated with the cylinder cavity 107 is installed on the cylinder wall outside the exhaust hole, the air cooler 301 is a finned tube group, the diameter of the finned tube is 5-50 mm, and the finned tube is made of carbon steel, stainless steel, aluminum or other alloy with good heat conductivity; a sulfur dioxide concentration detector 303 is arranged in the air cooler 301 to detect whether the gas discharged into the atmosphere meets the requirements of national standards, if the content of sulfur dioxide exceeds the national standards, an alarm associated with the sulfur dioxide detector 303 gives an alarm, and equipment maintenance personnel carry out maintenance; the desulfurizer spraying system comprises a desulfurizer storage tank 601 arranged outside the cylinder body 100, the volume of the desulfurizer storage tank 601 can be selected within the range of 20-1000 liters, and the tank body can be a circular or square metal barrel or a plastic barrel; a water pump 606 is arranged outside the desulfurizer storage tank 601, the water pump 606 is arranged in a fourth pipeline 607 arranged outside the cylinder 100, and the water pump 606 can be selected from the group consisting of a flow of 50-800 liters/hour and a lift of 1-20 meters; the outlet end of the fourth pipeline 607 arranged in the cylinder cavity 107 is provided with a spray header 608, the spray header 608 has a downward nozzle and is arranged in the middle of the cylinder cavity 107, and the spray header 608 is a porous spray header; an induced draft fan 201 is arranged in the second pipeline 204, the induced draft fan 201 pressurizes the sulfur-containing flue gas and blows the sulfur-containing flue gas into the barrel cavity 107, and the air volume of the induced draft fan 201 can be selected from 30-300 cubic meters per hour; the bottom of the cylinder 100 can be a plane or an arch protruding downwards, the lowest part of the bottom of the cylinder 100 is provided with a liquid discharge hole, the diameter of the liquid discharge hole can be selected from 1-10cm according to the actual situation, and the amount of liquid stored at the bottom of the cylinder cavity 107 can be quickly discharged and cannot be discharged to the air outlet of the second channel 204; the second pipe 204 is disposed in the cylinder chamber 107 with its opening facing downward to prevent the desulfurizing agent solution dropped from above from entering the second pipe 204.

In a preferred embodiment, a demister 108 and a demister 109 are arranged in the cylinder chamber 107 at the upper part of the spray header 608, the demister 108 is a single-layer or multi-layer screen, and the demister 109 is a wire mesh component; a liquid distribution disc 106 is arranged in a cylinder cavity 107 at the lower part of the spray header 608, the liquid distribution disc is a porous screen or a porous plate, a fixed grating 105 is arranged in the cylinder cavity 107 at the lower end of the liquid distribution disc 106 and the upper end of the packing layer 104, the fixed grating 105 is a grating-shaped fixed plate and plays a role of fixing the packing layer 104 so as to prevent the packing from being blown up by smoke blown from the lower part; the gas distribution disc 103 is arranged between the lower end of the support grid 102 and the outlet end of the second pipeline 204 in the cylinder cavity 107, the gas distribution disc 103 is a single-layer or multi-layer screen disc, and the sulfur-containing flue gas passes through the support grid 102 from bottom to top, is uniformly distributed by the gas distribution disc 103, and then is in full contact with a desulfurizer in a countercurrent mode in the packing layer 104, so that harmful substances such as sulfur dioxide, dust and the like contained in the flue gas can be effectively removed.

As a preferred embodiment, the induced draft fan 201 is a centrifugal fan, the second pipeline 204 is provided with an air outlet 203 on the pipeline outside the air inlet end of the induced draft fan 201, and a gate valve 202 is installed in the air outlet 203; the draught fan 201 is in circuit connection and interlocking with the water pump 606, namely one of the motive equipment stops working and the other one stops working, when the device is maintained, the draught fan 201 and the water pump 606 are closed, the gate valve 202 at the inlet pipe section of the draught fan 201 is opened, smoke is discharged through the standby air outlet 203, so that maintenance personnel can maintain the device under the safe condition, the gate valve 202 is closed after the maintenance is finished, the draught fan 201 and the water pump 605 are opened at the same time, and the device starts to operate; a liquid level transmitter 603 is arranged in the desulfurizer liquid storage tank 601 and is communicated with a third pipeline 604, an automatic water replenishing valve 605 is arranged in the third pipeline 604, and the liquid level transmitter 603 controls the automatic water replenishing valve 605 to be opened and closed; when the liquid content in the desulfurizer liquid storage tank 601 is insufficient and the liquid level drops to a preset position, the liquid level transmitter 603 sends an opening signal to the automatic water replenishing valve 605 to start water replenishing; when the liquid level in the desulfurizer liquid storage tank 601 reaches the preset height, the liquid level transmitter 603 sends a closing signal to the automatic water replenishing valve 605 to stop water replenishing.

As a preferred embodiment, a heating temperature control device 602 is installed in the desulfurizing agent liquid storage tank 601, a heat preservation room 701 is built outside the desulfurizing agent liquid storage tank 601, and a heater 702 is installed in the heat preservation room 701; the embodiment is mainly applied to places with lower temperature in winter to prevent the desulfurization solution from freezing.

As a preferred embodiment, the bottom of the cylinder 100 is provided with three legs 100, a liquid discharge hole at the bottom of the cylinder 100 is communicated with a first pipeline 110, the contact position between the first pipeline 110 and the cylinder wall is sealed, the outlet end of the first pipeline 110 is arranged in the desulfurizer storage tank 601, and the outlet end of the first pipeline 110 is arranged in the desulfurizer storage tank 601, so that the desulfurizer can be fully recovered, and waste and resources are avoided and saved.

In a preferred embodiment, a rain-proof cap 302 is mounted on the top of the air cooler 301.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides a civil environment-friendly flue gas desulfurization dust collector which characterized in that: the device comprises a cylinder body (100), wherein a vent hole is formed in the cylinder wall of the upper part of the cylinder body (100); a cylinder cavity (107) is formed in the cylinder (100), the upper part of the cylinder cavity (107) is communicated with a desulfurizer spraying system which is arranged outside the cylinder (100) and is arranged on the main body through a fourth pipeline (607), and the outlet end of the fourth pipeline (607) penetrates through the cylinder wall and is arranged on the upper part of the cylinder cavity (107); a packing layer (104) and a support grating (102) are sequentially arranged in a cylinder cavity (107) at the lower part of the outlet end of the fourth pipeline (607), and a second pipeline (204) communicated with the cylinder cavity (107) is arranged on the cylinder wall at the lower part of the support grating (102).

2. The civil environment-friendly flue gas desulfurization and dust removal device of claim 1, wherein: an air cooler (301) communicated with the cylinder cavity (107) is arranged on the cylinder wall outside the exhaust hole, and a sulfur dioxide concentration detector (303) is arranged in the air cooler (301); the desulfurizer spraying system comprises a desulfurizer storage tank (601) arranged outside the cylinder (100), a water pump (606) is arranged outside the desulfurizer storage tank (601), and the water pump (606) is arranged in a fourth pipeline (607) arranged outside the cylinder (100); the outlet end of the fourth pipeline (607) arranged in the cylinder cavity (107) is provided with a spray header (608); an induced draft fan (201) is arranged in the second pipeline (204); a liquid discharge hole is formed in the bottom of the cylinder body (100); the second pipeline (204) is arranged in the barrel cavity (107) with an opening facing downwards.

3. The civil environment-friendly flue gas desulfurization and dust removal device of claim 2, wherein: a demister (108) and a demister (109) are arranged in a cylinder cavity (107) at the upper part of the spray header (608), a liquid distribution disc (106) is arranged in the cylinder cavity (107) at the lower part of the spray header (608), and a fixed grating (105) is arranged in the cylinder cavity (107) at the lower end of the liquid distribution disc (106) and the upper end of the packing layer (104); the gas distribution plate (103) is arranged between the lower end of the support grid (102) and the outlet end of the second pipeline (204) in the cylinder cavity (107).

4. The civil environment-friendly flue gas desulfurization and dust removal device as claimed in claim 2, wherein: the induced draft fan (201) is a centrifugal fan, the second pipeline (204) is provided with an air outlet (203) on the pipeline outside the air inlet end of the induced draft fan (201), and a gate valve (202) is installed in the air outlet (203); and a liquid level transmitter (603) is arranged in the desulfurizer liquid storage tank (601) and is communicated with a third pipeline (604), and an automatic water replenishing valve (605) is arranged in the third pipeline (604).

5. The civil environment-friendly flue gas desulfurization and dust removal device of claim 2, wherein: the desulfurizer liquid storage tank (601) is internally provided with a heating temperature control device (602), a heat preservation room (701) is built outside the desulfurizer liquid storage tank (601), and a heater (702) is arranged in the heat preservation room (701).

6. The civil environment-friendly flue gas desulfurization and dust removal device as claimed in claim 2, wherein: the desulfurizer storage tank is characterized in that a plurality of supporting legs (101) are arranged at the bottom of the cylinder body (100), a liquid discharge hole in the bottom of the cylinder body (100) is communicated with a first pipeline (110), and the outlet end of the first pipeline (110) is arranged in the desulfurizer storage tank (601).

7. The civil environment-friendly flue gas desulfurization and dust removal device as claimed in claim 2, wherein: and a rain-proof cap (302) is arranged at the top of the air cooler (301).