CN219072478U

CN219072478U - HF reaction converter gas washing device

Info

Publication number: CN219072478U
Application number: CN202320105823.5U
Authority: CN
Inventors: 郭忠松; 朱强; 徐高伟
Original assignee: Yantai Zhongrui Chemical Co ltd
Current assignee: Yantai Zhongrui Chemical Co ltd
Priority date: 2023-02-03
Filing date: 2023-02-03
Publication date: 2023-05-26
Anticipated expiration: 2033-02-03

Abstract

The utility model relates to the technical field of HF washing, in particular to a gas washing device of an HF reaction converter, which comprises a spray tower, wherein one side of the spray tower is provided with a circulating sulfuric acid tank, the other side of the spray tower is provided with an air inlet pipe, the top end of the spray tower is provided with an air outlet pipe, and the device further comprises: the washing part comprises a spraying assembly and a flow dividing assembly, wherein the spraying assembly is arranged in three groups and used for spraying HF gas in the spraying tower, and the flow dividing assembly is arranged below the spraying assembly and used for uniformly spraying liquid in the spraying assembly onto the HF gas in the spraying tower. According to the utility model, the washing part is arranged, after the HF gas passes through the three spraying solutions sprayed by the washing component, the impurity removal rate reaches more than 99%, the subsequent system almost has no solid impurities, the spraying solution can be uniformly sprayed onto the HF gas by the diversion component in the range of taking the diameter of the spraying tower as the circumference, and after the spraying tower is used, the continuous operation time of the system is prolonged to more than 8 months from about 2-3 months before.

Description

HF reaction converter gas washing device

Technical Field

The utility model relates to the technical field of HF washing, in particular to a gas washing device of an HF reaction converter.

Background

Anhydrous Hydrogen Fluoride (AHF) is an important raw material for chemical industry and national defense industry, and is mainly used for producing fluorine salt, refrigerant, fluoroplastic and the like. Plays an important role in the atomic energy industry and the electronic industry in China and has an important role in national economy. At present, the material is prepared by the action of fluorite and sulfuric acid, and the two materials react in a rotary kiln. Rotary kilns come in a variety of forms, and different manufacturers have their own improvements. Since the HF gas from the reaction vessel contains a lot of impurities (fluorite powder, SA, etc.), particularly ultrafine solid powder such as fluorite powder, which is not completely treated and can clog the subsequent piping equipment, the HF gas is subjected to a unit operation of rough separation before entering the condenser, in order to remove SA and fluorite powder contained in the HF gas. At present, a packing tower adopted in the rough separation step in the AHF industry is washed, the packing tower is easy to block, and continuous and stable operation can not be realized for a long period.

At present, a main stream technology is to remove dust, sulfuric acid, water and other heavy component impurities in crude HF in a reaction furnace by using a washing tower. The washing tower is filled with random packing, and the random packing with the greatest application is Raschig ring and stepped ring. Both the fillers are easy to accumulate and channeling, the pressure drop of the tower is increased after the tower is used for a period of time, the mass transfer capacity is reduced, and the tower can only be stopped for cleaning, so that the long-term production of equipment is affected. In view of this, we propose an HF reactor vessel gas scrubbing unit.

Disclosure of Invention

In order to remedy the above shortcomings, the present utility model provides a gas scrubbing apparatus for an HF reaction converter.

The technical scheme of the utility model is as follows:

the HF reaction converter gas washing device comprises a spray tower, wherein one side of the spray tower is provided with a circulating sulfuric acid tank, the other side of the spray tower is provided with an air inlet pipe, the top end of the spray tower is provided with an air outlet pipe, and the HF reaction converter gas washing device further comprises:

the washing part comprises a spraying assembly and a flow dividing assembly, wherein the spraying assembly is arranged in three groups and used for spraying HF gas in the spraying tower, and the flow dividing assembly is arranged below the spraying assembly and used for uniformly spraying liquid in the spraying assembly onto the HF gas in the spraying tower.

Preferably, the spray assembly is a first acid spraying pipe, a second acid spraying pipe and a third acid spraying pipe, and the first acid spraying pipe, the second acid spraying pipe and the third acid spraying pipe are sequentially and transversely distributed in the spray tower from top to bottom.

Preferably, the first acid spraying pipe, the second acid spraying pipe and the third acid spraying pipe are all connected with the circulating sulfuric acid tank and are all connected with water outlet pipes.

Preferably, the flow dividing assembly is a flow dividing plate, a water storage groove is arranged on the flow dividing plate, the water storage groove is in a shape like a Chinese character 'hui', and water in the water outlet pipe intensively flows into the water storage groove.

Preferably, a water outlet hole is respectively arranged at two sides of the water storage tank, a plurality of diversion grooves are arranged on the diversion plate, and water in the water storage tank flows into the diversion grooves through the water outlet holes.

Preferably, the diversion groove is provided with a plurality of water spraying holes, and water in the diversion groove is uniformly sprayed to HF gas in the spray tower from the water spraying holes.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the washing part is arranged, after the HF gas passes through the three spraying solutions sprayed by the washing component, the impurity removal rate reaches more than 99%, the subsequent system almost has no solid impurities, the spraying solution can be uniformly sprayed onto the HF gas by the diversion component in the range of taking the diameter of the spraying tower as the circumference, and after the spraying tower is used, the continuous operation time of the system is prolonged to more than 8 months from about 2-3 months before.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

FIG. 3 is a schematic view of the structure of the splitter plate of the present utility model;

FIG. 4 is a top view of the manifold of the present utility model;

fig. 5 is a front view of the present utility model.

In the figure: 1. a support plate; 2. support legs; 3. a spray tower; 4. a circulating sulfuric acid tank; 5. a first acid spraying pipe; 6. a second acid spraying pipe; 7. a third acid spraying pipe; 8. an air outlet pipe; 9. a water outlet pipe; 10. a diverter plate; 11. a water storage tank; 12. a water outlet hole; 13. a shunt channel; 14. a water spraying hole; 15. an air inlet pipe; 16. and a discharging pipe.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to fig. 1-5, the present utility model is described in detail by the following embodiments:

the utility model provides a gaseous washing device of HF reaction converter, including spray column 3, spray column 3 one side is equipped with circulation sulfuric acid tank 4, the opposite side is equipped with intake pipe 15, intake pipe 15 and spray column 3 fixed connection just are located spray column 3 bottoms, the top is equipped with outlet duct 8, outlet duct 8 and spray column 3 fixed connection, backup pad 1 is installed to spray column 3's bottom, fixed connection between backup pad 1 and the spray column 3, four supporting legs 2 of lower extreme fixedly connected with of backup pad 1, spray column 3 bottom fixedly connected with discharging pipe 16, impurity and liquid after spraying flow from discharging pipe 16, still include:

the washing part comprises a spraying component and a flow dividing component, wherein the spraying component is arranged to be located in the spraying tower 3 for spraying HF gas, the flow dividing component is located below the spraying component, and spraying liquid in the spraying component is uniformly sprayed onto the HF gas in the spraying tower 3. The spray assembly comprises a first acid spraying pipe 5, a second acid spraying pipe 6 and a third acid spraying pipe 7, and the first acid spraying pipe 5, the second acid spraying pipe 6 and the third acid spraying pipe 7 are sequentially and transversely distributed in the spray tower 3 from top to bottom. The first acid spraying pipe 5, the second acid spraying pipe 6 and the third acid spraying pipe 7 are all connected with the circulating sulfuric acid tank 4 and are all connected with a water outlet pipe 9. The first acid spraying pipe 5, the second acid spraying pipe 6 and the third acid spraying pipe 7 are fixedly connected with the water outlet pipe 9. The flow dividing component is a flow dividing plate 10, the flow dividing plate 10 is provided with a water storage tank 11, the water storage tank 11 is in a shape like a Chinese character 'Hui', and water in the water outlet pipe 9 flows into the water storage tank 11 in a concentrated manner. The water outlet pipe 9 is composed of two connecting water pipes, the first connecting water pipe is transversely fixedly connected with the first acid spraying pipe 5, the second acid spraying pipe 6 and the third acid spraying pipe 7, the second connecting water pipe is arranged into a plurality of water pipes which are vertically fixedly connected with the first connecting water pipe, and spray liquid in the circulating sulfuric acid tank 4 sequentially enters the first connecting water pipe from the first acid spraying pipe 5, the second acid spraying pipe 6 and the third acid spraying pipe 7 and then flows into the water storage tank 11 through the second connecting water pipe. Two sides of the water storage tank 11 are respectively provided with a water outlet hole 12, the splitter plate 10 is provided with a plurality of splitter boxes 13, and water in the water storage tank 11 flows into the splitter boxes 13 through the water outlet holes 12. The diversion trench 13 is provided with a plurality of water spray holes 14, and water in the diversion trench 13 is uniformly sprayed to HF gas in the spray tower 3 from the water spray holes 14.

When the spray tower is used, HF gas enters the spray tower 3 from the air inlet pipe 15, HF gas flows from bottom to top in the spray tower 3, 50% liquid level is established in the circulating sulfuric acid tank 4 by concentrated sulfuric acid, the circulating pump is started, hand valves on the first acid spraying pipe 5, the second acid spraying pipe 6 and the third acid spraying pipe 7 are opened, spray liquid sequentially enters the first connecting water pipe from the first acid spraying pipe 5, the second acid spraying pipe 6 and the third acid spraying pipe 7 and flows into the water storage tank 11 through the second connecting water pipe, spray liquid is concentrated in the water storage tank 11, when the liquid level of the spray liquid in the water storage tank 11 rises to the position of the water outlet 12, the spray liquid flows into the diversion tank 13 from the water outlet 12 and then is sprayed to the HF gas in the spray tower 3 through the water spraying holes 14, and at the moment, the spray liquid can be uniformly sprayed to the HF gas within the range of circumference by the diameter of the spray tower 3, and if the spray liquid is easy to spray from the first acid spraying pipe 5, the second acid spraying pipe 6 and the third acid spraying pipe 7 to the positions in the spray tower 3.

After the HF gas passes through the third spray liquid sprayed by the third spray acid pipe 7, the second spray acid pipe 6 and the first spray acid pipe 5, the impurity removal rate reaches more than 99%, the subsequent system almost has no solid impurities, the sprayed HF gas is collected at the air outlet pipe 8, and the sprayed impurities and liquid flow out from the discharging pipe 16. After using the spray tower 3, the continuous operation time of the system is prolonged to more than 8 months from the previous maximum of about 2-3 months.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

HF reaction converter gas washing device, including spray column (3), spray column (3) one side is equipped with circulation sulfuric acid tank (4), and the opposite side is equipped with intake pipe (15), and the top is equipped with outlet duct (8), its characterized in that still includes:

the washing part comprises a spraying assembly and a flow dividing assembly, wherein the spraying assembly is arranged in three groups and is used for spraying HF gas in the spraying tower (3), the flow dividing assembly is arranged below the spraying assembly, and spraying liquid in the spraying assembly is uniformly sprayed onto the HF gas in the spraying tower (3).
2. The HF reactor vessel gas scrubbing apparatus of claim 1, wherein: the spray assembly comprises a first acid spraying pipe (5), a second acid spraying pipe (6) and a third acid spraying pipe (7), wherein the first acid spraying pipe (5), the second acid spraying pipe (6) and the third acid spraying pipe (7) are sequentially and transversely distributed in the spray tower (3) from top to bottom.
3. The HF reactor vessel gas scrubbing apparatus of claim 2, wherein: the first acid spraying pipe (5), the second acid spraying pipe (6) and the third acid spraying pipe (7) are connected with the circulating sulfuric acid tank (4) and are connected with water outlet pipes (9).
4. The HF reactor vessel gas scrubbing apparatus of claim 3, wherein: the water storage device is characterized in that the flow distribution assembly is a flow distribution plate (10), a water storage groove (11) is arranged on the flow distribution plate (10), the water storage groove (11) is in a shape like a Chinese character 'hui', and water in the water outlet pipe (9) intensively flows into the water storage groove (11).
5. The HF reactor vessel gas scrubbing apparatus of claim 4, wherein: the two sides of the water storage tank (11) are respectively provided with a water outlet hole (12), the splitter plate (10) is provided with a plurality of splitter boxes (13), and water in the water storage tank (11) flows into the splitter boxes (13) through the water outlet holes (12).
6. The HF reactor vessel gas scrubbing apparatus of claim 5, wherein: the water distribution tank (13) is provided with a plurality of water spray holes (14), and water in the water distribution tank (13) is uniformly sprayed onto HF gas in the spray tower (3) from the water spray holes (14).