CN216106030U

CN216106030U - Secondary sedimentation equipment for carbon disulfide

Info

Publication number: CN216106030U
Application number: CN202122664390.0U
Authority: CN
Inventors: 白姣姣; 杨云飞; 葛葆英
Original assignee: Hebei Mingwei Engineering Design Co ltd
Current assignee: Hebei Mingwei Engineering Design Co ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2022-03-22
Anticipated expiration: 2031-11-02

Abstract

The utility model relates to a carbon disulfide secondary sedimentation equipment mainly relates to the technical field of carbon disulfide production facility, it includes the first settling cask that feed inlet and carbon disulfide cooling plant discharge gate are linked together, establish the first explosion-proof valve at first settling cask discharge gate, the gear pump that links to each other with first explosion-proof valve discharge end, the second settling cask that links to each other with the gear pump discharge end, establish the second explosion-proof valve at second settling cask discharge gate and the liquid storage pot that links to each other with second explosion-proof valve discharge end. The method has the advantages of improving the product purity and yield of the process for preparing the carbon disulfide by the water cooling method.

Description

Secondary sedimentation equipment for carbon disulfide

Technical Field

The application relates to the technical field of carbon disulfide production equipment, in particular to secondary sedimentation equipment for carbon disulfide.

Background

Carbon disulphide is generally manufactured industrially by calcination of elemental sulphur in a methane environment. The carbon disulfide obtained by the method can be in a gaseous state under the action of calcination heating. For convenient storage and transportation, it is necessary to condense the gaseous carbon disulphide to a liquid state.

At present, the common mode of carbon disulfide gas condensation is to contact carbon disulfide gas with water, obtain the mixed liquid of carbon disulfide and water with the water-cooling mode, reuse carbon disulfide and water immiscible and the characteristic of not reacting and separate carbon disulfide and water and obtain the carbon disulfide product. In actual production, the carbon disulfide product obtained by using a water cooling method contains a small amount of water. And a part of carbon disulfide can be taken away by the condensed water, so that the yield of the carbon disulfide is influenced.

In view of the above-mentioned related technologies, the inventors found that the preparation of carbon disulfide by condensing carbon disulfide gas by a water cooling method has the defects that the purity of carbon disulfide products is low and the yield of condensed water is affected.

SUMMERY OF THE UTILITY MODEL

In order to promote product purity and the output of water-cooling method preparation carbon disulfide technology, this application provides a carbon disulfide secondary sedimentation equipment.

The application provides a carbon disulfide secondary settlement equipment adopts following technical scheme:

the utility model provides a carbon disulfide secondary sedimentation equipment, includes the first settling cask that feed inlet and carbon disulfide cooling arrangement discharge gate are linked together, establish the first explosion-proof valve at first settling cask discharge gate, the gear pump that links to each other with first explosion-proof valve discharge end, the second settling cask that links to each other with the gear pump discharge end, establish the second explosion-proof valve at second settling cask discharge gate and the liquid storage pot that links to each other with second explosion-proof valve discharge end.

Through adopting above-mentioned technical scheme, the first settling cask that is linked together with carbon disulfide cooling device discharge gate can carry out the first settlement to the carbon disulfide that comes from carbon disulfide condensing equipment and the mixed liquid of water, and the carbon disulfide through the first settlement processing can enter into the second settling cask through first explosion-proof valve under the negative pressure of gear pump to carry out the second settlement processing in the second settling cask, and finally enter into the liquid storage pot through the second explosion-proof valve. Water in the carbon disulfide product subjected to twice sedimentation treatment is effectively removed, and part of carbon disulfide in condensed water is converged into the liquid storage tank through sedimentation, so that the purposes of improving the product purity and yield of the process for preparing carbon disulfide by a water cooling method are achieved.

Optionally, an overflow pipe is arranged at the top of the first settling tank, and the overflow pipe is communicated with a condensate pipeline of the carbon disulfide cooling device.

Through adopting above-mentioned technical scheme, deposit through the first time and accumulate the water on first settling cask upper strata and can participate in the gaseous cooling of carbon disulfide again in carbon disulfide cooling arrangement through the overflow pipe backward flow, the structural design of overflow pipe has avoided discharging the carbon disulfide loss that the comdenstion water in-process caused, has further promoted the output of water-cooling method preparation carbon disulfide technology.

Optionally, a return pipe is arranged at the top end of the second settling tank, and the other end of the return pipe is communicated with the top of the first settling tank.

Through adopting above-mentioned technical scheme, deposit through the second time and accumulate the water on second settling cask upper strata and can flow back to first settling cask in through the back flow to participate in the gaseous cooling of carbon disulfide again in carbon disulfide cooling arrangement through the overflow pipe of first settling cask, the structural design of back flow has avoided discharging the carbon disulfide loss that the comdenstion water in-process caused, has further promoted the output of water-cooling method preparation carbon disulfide technology.

Optionally, a check valve is arranged between the return pipe and the second settling tank.

Through adopting above-mentioned technical scheme, install the check valve between back flow and second settling cask and can prevent that the water in the back flow pipe from flowing back to the second settling cask again, avoid the backward flow of water to cause the influence to the finished purity of carbon disulfide in the second settling cask to the product purity of water-cooling method preparation carbon disulfide technology has been promoted.

Optionally, one end of the return pipe connected with the first settling tank extends into the first settling tank and bends towards the horizontal direction.

Through adopting above-mentioned technical scheme, the flow velocity when the structural design of back flow can make the water in the second settling cask flow in first settling cask via the back flow slows down, weakens the impact of rivers to first settling cask interior liquid, is favorable to subsiding the carbon disulfide and the water remixing of layering through static, has reduced the carbon disulfide content of water layer in the first settling cask, has reduced the carbon disulfide loss of first time settlement in-process, has further promoted the output of water-cooling method preparation carbon disulfide technology.

Optionally, the inner walls of the first settling tank, the second settling tank and the liquid storage tank are all provided with oleophobic coatings.

Through adopting above-mentioned technical scheme, paint oleophobic coating on first settling cask, second settling cask and liquid storage pot inner wall and can reduce the absorption of first settling cask, second settling cask and liquid storage pot inner wall to carbon disulfide, reduce the loss of carbon disulfide in settlement process and the storage process, further promoted the output of water-cooling method preparation carbon disulfide technology.

Optionally, the first settling tank is provided with a magnetostrictive liquid level meter, and a liquid level sensor of the magnetostrictive liquid level meter is arranged on the inner wall of the first settling tank.

Through adopting above-mentioned technical scheme, the inner wall of first settling cask plays support and fixed effect to the level sensor of magnetostrictive liquid level appearance, and magnetostrictive liquid level appearance can demonstrate carbon disulfide's in the first settling cask liquid level height, makes things convenient for operating personnel to open of gear pump to stop and control, has avoided the water layer to be gone into the condition emergence in the second settling cask by the pump, has promoted the product purity of water-cooling method preparation carbon disulfide technology.

Optionally, a plurality of drying filter screens are arranged in the liquid storage tank.

Through adopting above-mentioned technical scheme, dry filter screen carries out the drying absorption to the trace moisture that contains in the carbon disulfide finished product that can store in the liquid storage pot, and the structural design of multilayer filter screen can increase the area of contact of carbon disulfide finished product and dry filter screen, further strengthens dry filter screen to the drying effect of carbon disulfide finished product, has promoted the product purity of water-cooling method preparation carbon disulfide technology.

In summary, the present application includes at least one of the following beneficial technical effects:

1. in the application, the check valve arranged between the return pipe and the second settling tank can prevent water in the return pipe from flowing back to the second settling tank again, so that the influence of the backflow of the water on the purity of a carbon disulfide finished product in the second settling tank is avoided, and the product purity of the carbon disulfide preparation process by a water cooling method is improved;

2. the oleophobic coatings smeared on the inner walls of the first settling tank, the second settling tank and the liquid storage tank can reduce the adsorption of the inner walls of the first settling tank, the second settling tank and the liquid storage tank on carbon disulfide, reduce the loss of the carbon disulfide in the settling process and the storage process and further improve the yield of the process for preparing the carbon disulfide by a water cooling method;

3. the dry filter screen in this application carries out the drying to the trace moisture that can contain in the carbon disulfide finished product of storage in the liquid storage pot and absorbs, and the structural design of multilayer filter screen can increase the area of contact of carbon disulfide finished product and dry filter screen, further strengthens dry filter screen to the off-the-shelf drying effect of carbon disulfide, has promoted the product purity of water-cooling method preparation carbon disulfide technology.

Drawings

Figure 1 is the structural schematic diagram of a carbon disulfide secondary sedimentation equipment that this application embodiment discloses.

Figure 2 is the sectional structure schematic diagram of a carbon disulfide secondary sedimentation device disclosed in the embodiment of the application.

FIG. 3 is a schematic structural view of an oleophobic coating in an embodiment of the application.

Description of reference numerals: 1. a first settling tank; 11. an overflow pipe; 12. a magnetostrictive liquid level gauge; 2. a first explosion-proof valve; 3. a gear pump; 4. a second settling tank; 41. a return pipe; 411. a non-return valve; 5. a second explosion-proof valve; 6. a liquid storage tank; 61. drying the filter screen; 7. an oleophobic coating.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

At present, the water cooling method for preparing carbon disulfide is a common method for industrially preparing carbon disulfide. However, a part of carbon disulfide can be taken away by the condensed water participating in cooling carbon disulfide, so that the yield loss of carbon disulfide is caused, and the phenomenon that the purity of the product is not high due to the fact that a small amount of water is contained in the carbon disulfide product is also caused. In order to promote product purity and the output of water-cooling method preparation carbon disulfide technology, this application embodiment provides a carbon disulfide secondary sedimentation equipment.

The embodiment of the application discloses carbon disulfide secondary sedimentation equipment. Referring to fig. 1 and 2, the carbon disulfide secondary sedimentation device comprises a first sedimentation tank 1, a first explosion-proof valve 2, a gear pump 3, a second sedimentation tank 4, a second explosion-proof valve 5 and a liquid storage tank 6. Wherein, the feed inlet of the bottom of first settling cask 1 is linked together with carbon disulfide condensing equipment's discharge gate, first explosion-proof valve 2 is installed to the discharge gate of the bottom of first settling cask 1, the other end of first explosion-proof valve 2 is linked together with the feed end of gear pump 3, the discharge end of gear pump 3 is linked together with the feed end of 4 bottoms of second settling cask, second explosion-proof valve 5 is installed to the discharge end of second settling cask 4, the other end of second explosion-proof valve 5 is linked together with the bottom feed inlet of liquid storage pot 6.

The mixed liquid of carbon disulfide and water enters into first settling cask 1 after and begins to carry out the settlement of stewing for the first time to separate out the water layer on upper strata and the carbon disulfide layer on lower floor, the carbon disulfide layer on lower floor is gone into by gear pump 3 pump under the control of first explosion-proof valve 2 and is started to carry out the settlement of stewing for the second time in second settling cask 4, the water layer on upper strata and the carbon disulfide layer on lower floor are separated again, the carbon disulfide layer on lower floor enters into liquid storage pot 6 and stores under the control of second explosion-proof valve 5. The carbon disulfide finished product subjected to twice standing sedimentation and layering treatment has low water content and high purity. And carbon disulfide in the water layer also can be because of the sedimentation effect fuses into the carbon disulfide layer, has reduced the volume of the carbon disulfide that the comdenstion water layer band-separated, has reduced carbon disulfide loss in the production process, has promoted output.

Referring to fig. 2 and 3, the first settling tank 1 may be a metal tank having a spherical bottom surface and a cylindrical body. A feed inlet and a discharge outlet are opened at the bottom of the first settling tank 1. The feed inlet is communicated with a discharge hole of the carbon disulfide condensing equipment. An overflow pipe 11 is installed at the top of the first settling tank 1, and the other end of the overflow pipe 11 is communicated with a condensate pipe in the carbon disulfide condensing equipment. The inner wall of the first settling tank 1 is coated with an oleophobic coating 7.

Referring to fig. 1 and 2, a first explosion-proof valve 2 is installed at a discharge port at the bottom of a first settling tank 1, and the first explosion-proof valve 2 may be an explosion-proof solenoid valve.

Referring to fig. 1 and 2, a single-stage explosion-proof oil pump can be selected as the gear pump 3, the feed end of the gear pump 3 is communicated with the first explosion-proof valve 2, and the discharge end of the gear pump 3 is communicated with the bottom of the second settling tank 4.

Referring to fig. 2 and 3, the second settling tank 4 may be a metal tank with a spherical bottom surface and a cylindrical tank body, the bottom of the second settling tank 4 is provided with a feed inlet and a discharge outlet, the feed inlet is communicated with the discharge end of the gear pump 3, the top of the second settling tank 4 is provided with a return pipe 41, the other end of the return pipe 41 is communicated with the top of the first settling tank 1, and the part of the return pipe 41 in the first settling tank 1 is bent towards the horizontal direction. The return pipe 41 is provided with a check valve 411. The inner wall of the second settling tank 4 is coated with an oleophobic coating 7.

Referring to fig. 1 and 2, a second explosion-proof valve 5 is installed at the discharge port at the bottom of the second settling tank 4, and the second explosion-proof valve 5 may be an explosion-proof solenoid valve.

Referring to fig. 2 and 3, the bottom end of the liquid storage tank 6 is communicated with the second explosion-proof valve 5, a plurality of drying filter screens 61, which may be 3 in the embodiment of the present application, are installed in the liquid storage tank 6 in parallel, and the drying filter screens 61 may be a latticed metal frame coated with an anhydrous calcium chloride coating.

The implementation principle of the carbon disulfide secondary sedimentation equipment of the embodiment of the application is as follows: the mixed liquid of carbon disulfide and water flows into the first settling tank 1 from the discharge port of the carbon disulfide cooling equipment for first settling, a water layer positioned on the upper layer in the first settling tank 1 after the first settling is carried out is refluxed into a condensation water pipeline of the carbon disulfide cooling equipment from the overflow pipe 11, the carbon disulfide layer at the lower layer in the first settling tank 1 is pumped into a second settling tank 4 by a gear pump 3 through a first explosion-proof valve 2 for secondary settling, and after the secondary standing and settling, the water layer at the upper layer in the second settling tank 4 flows into the first settling tank 1 through the return pipe 41, the carbon disulfide layer at the lower layer of the second settling tank 4 flows into the liquid storage tank 6 through the second explosion-proof valve 5, and a drying filter screen 61 in the liquid storage tank 6 is used for drying the carbon disulfide finished product, removing trace moisture contained in the carbon disulfide finished product and storing the carbon disulfide finished product.

The above is a preferred embodiment of the present application, and the scope of protection of the present application is not limited by the above, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a carbon disulfide secondary sedimentation equipment which characterized in that: the device comprises a first settling tank (1) communicated with a discharge port of carbon disulfide cooling equipment at a feed inlet, a first explosion-proof valve (2) arranged at the discharge port of the first settling tank (1), a gear pump (3) connected with the discharge end of the first explosion-proof valve (2), a second settling tank (4) connected with the discharge end of the gear pump (3), a second explosion-proof valve (5) arranged at the discharge port of the second settling tank (4) and a liquid storage tank (6) connected with the discharge end of the second explosion-proof valve (5).

2. A carbon disulphide secondary sedimentation device according to claim 1, characterized in that: an overflow pipe (11) is arranged at the top of the first settling tank (1), and the overflow pipe (11) is communicated with a condensed water pipeline of the carbon disulfide cooling equipment.

3. A carbon disulphide secondary sedimentation device according to claim 1, characterized in that: a return pipe (41) is arranged at the top end of the second settling tank (4), and the other end of the return pipe (41) is communicated with the top of the first settling tank (1).

4. A carbon disulphide secondary sedimentation device according to claim 3, characterized in that: a check valve (411) is arranged between the return pipe (41) and the second settling tank (4).

5. A carbon disulphide secondary sedimentation device according to claim 3, characterized in that: one end of the return pipe (41) connected with the first settling tank (1) extends into the first settling tank (1) and bends towards the horizontal direction.

6. A carbon disulphide secondary sedimentation device according to claim 1, characterized in that: the inner walls of the first settling tank (1), the second settling tank (4) and the liquid storage tank (6) are all provided with oleophobic coatings (7).

7. A carbon disulphide secondary sedimentation device according to claim 1, characterized in that: the first settling tank (1) is provided with a magnetostrictive liquid level meter (12), and a liquid level sensor of the magnetostrictive liquid level meter (12) is arranged on the inner wall of the first settling tank (1).

8. A carbon disulphide secondary sedimentation device according to claim 1, characterized in that: a plurality of drying filter screens (61) are arranged in the liquid storage tank (6).