Gas pretreatment equipment in membrane method natural gas separation and purification process

Abstract

The utility model relates to the technical field of natural gas desulfurization, in particular to gas pretreatment equipment in a membrane-method natural gas separation and purification process, which comprises a barrel, a gas inlet pipe, a gas outlet pipe, a flat membrane separation component and a purification mechanism, the purification mechanism comprises a rotating shaft, a rotating handle and a plurality of stirring elements, and the gas inlet pipe is fixedly connected with the barrel and positioned at the lower end of the barrel; the air outlet pipe is fixedly connected with the cylinder body and located above the cylinder body, the flat sheet membrane separation component is fixedly connected with the cylinder body and located in the cylinder body, the rotating shaft is rotationally connected with the cylinder body and extends into the cylinder body, the rotating shaft is located below the flat sheet membrane separation component, and the rotating handle is fixedly connected with the rotating shaft and located below the cylinder body. When the natural gas is subjected to membrane treatment desulfurization, moisture in the natural gas is removed through the purification mechanism, so that the moisture is prevented from blocking a flat sheet membrane separation part and damaging equipment, and the service life of the equipment is further prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to natural gas desulfurization technical field especially relates to a kind of gas pretreatment equipment in membrane method natural gas separation purification process. BACKGROUND

[0002] The quality standard of commercial natural gas is formulated according to the dominant use of natural gas, comprehensive economic benefits, safety and health and environmental protection. In the geological history period, the specific sedimentary environment of part of natural gas field is beneficial to the enrichment of sulfur-containing substances, and after complex geological action, high-sulfur hydrogen sulfide natural gas reservoir is formed. For how to quickly and efficiently remove hydrogen sulfide in natural gas in the process of high-sulfur natural gas exploitation, it is an inevitable choice to realize the effective exploitation of high-sulfur natural gas. In this project, the acid gas removal membrane used in the early stage of research is used as the separation medium, and the hydrogen sulfide content in natural gas is quickly reduced by using membrane separation method. The working principle of membrane separation method is to separate H2S and other gases in natural gas by using the selective permeability of membrane, to realize rapid and efficient desulfurization of high-sulfur natural gas.

[0003] Natural gas contains moisture, and when natural gas containing moisture is directly subjected to membrane separation, moisture is easy to block flat plate membrane separation components and damage equipment, reducing the service life of the device. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a kind of gas pretreatment equipment in membrane method natural gas separation purification process, to solve the problem that natural gas contains moisture, and when natural gas containing moisture is directly subjected to membrane separation, moisture is easy to block flat plate membrane separation components and damage equipment, reducing the service life of the device.

[0005] To achieve the above purpose, the utility model provides a kind of gas pretreatment equipment in membrane method natural gas separation purification process, including cylinder, inlet pipe, outlet pipe, flat plate membrane separation component and purification mechanism, the purification mechanism includes rotating shaft, handle and multiple stirring elements, the inlet pipe is fixedly connected with the cylinder and located at the lower end of the cylinder, the outlet pipe is fixedly connected with the cylinder and located above the cylinder, the flat plate membrane separation component is fixedly connected with the cylinder and located in the cylinder, the rotating shaft is rotatably connected with the cylinder and extends into the cylinder, and the rotating shaft is located below the flat plate membrane separation component, the handle is fixedly connected with the rotating shaft and located below the cylinder, multiple stirring elements are arranged on the rotating shaft.

[0006] Among them, the stirring element includes mounting cylinder and two rotating plates, the mounting cylinder is fixedly connected with the rotating shaft and located below the flat plate membrane separation component, and two rotating plates are fixedly connected with the mounting cylinder and located at both ends of the mounting cylinder.

[0007] The purification mechanism further comprises a guide plate, which is fixedly connected with the cylinder and located in the cylinder, and the guide plate is located above the air inlet pipe.

[0008] The purification mechanism further comprises a mounting plate and a rotating ring, the mounting plate is fixedly connected with the cylinder and located in the cylinder, the inner side wall of the rotating ring is rotationally connected with the rotating shaft, and the outer side wall of the rotating ring is rotationally connected with the mounting plate.

[0009] The purification mechanism further comprises two mounting rings, which are fixedly connected with the inner side wall of the cylinder, and the flat-plate membrane separation component is located between the two mounting rings.

[0010] The gas pretreatment equipment in the membrane method natural gas separation and purification process of the utility model, when desulfurizing natural gas, calcium chloride solution is added into the cylinder, and the water surface of the calcium chloride solution is lower than the flat-plate membrane separation component, the knob is rotated, the knob drives the rotating shaft and the plurality of stirring elements to rotate, natural gas is input into the cylinder through the air inlet pipe, natural gas enters the bottom of the cylinder, natural gas enters the calcium chloride solution in the form of bubbles, the plurality of rotating stirring elements stir the bubbles of natural gas, natural gas is fully contacted with the calcium chloride solution, the moisture in natural gas enters the calcium chloride solution, the moisture in natural gas and the calcium chloride solution react to generate hydrate precipitate, thereby removing the moisture, the purified natural gas gas floats away from the calcium chloride solution and is contacted with the flat-plate membrane separation component, H2S in natural gas is separated from other gas components, H2S gas passes through the flat-plate membrane separation component and flows out of the cylinder from the air outlet pipe, natural gas is removed of moisture before membrane desulfurization, so that the flat-plate membrane separation component is not blocked and damaged by moisture, and the service life of the device is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced.

[0012] Figure 1 is the structure diagram of the gas pretreatment equipment in the membrane method natural gas separation and purification process of the utility model.

[0013] Figure 2 is the side view of the gas pretreatment equipment in the membrane method natural gas separation and purification process of the utility model.

[0014] Figure 3 is the A-A line section view of the gas pretreatment equipment in the membrane method natural gas separation and purification process of the utility model. Figure 2

[0015] ​Figure 4 is the structure diagram of the inside of the cylinder body of the utility model.

[0016] 101-cylinder body, 102-inlet pipe, 103-outlet pipe, 104-rotating shaft, 105-handle, 106-mounting cylinder, 107-rotating plate, 108-guide plate, 109-rotating ring, 110-mounting plate, 111-flat plate membrane separation component, 112-mounting ring. DETAILED DESCRIPTION

[0017] Please refer to Figures 1 to 4 , wherein, Figure 1 is the structure diagram of the gas pretreatment equipment in the membrane method natural gas separation and purification process of the utility model, Figure 2 is the side view of the gas pretreatment equipment in the membrane method natural gas separation and purification process of the utility model, Figure 3 is the Figure 2 A-A line section view of the utility model, Figure 4 is the structure diagram of the inside of the cylinder body of the utility model.

[0018] The utility model provides a kind of gas pretreatment equipment in the membrane method natural gas separation and purification process, including cylinder body 101, inlet pipe 102, outlet pipe 103, flat plate membrane separation component 111 and purification mechanism, the purification mechanism includes rotating shaft 104, guide plate 108, mounting plate 110, rotating ring 109, handle 105 and multiple agitating elements, the agitating element includes mounting cylinder 106 and two rotating plates 107, by the foregoing scheme, it has solved the problem that the service life of device is reduced when water content in natural gas, water content natural gas directly carries out membrane separation, water content is easy to block flat plate membrane separation component 111 and damage equipment, reduces.

[0019] In the embodiment, the air inlet pipe 102 is fixedly connected with the cylinder 101 and located at the lower end of the cylinder 101, the air outlet pipe 103 is fixedly connected with the cylinder 101 and located above the cylinder 101, the flat-plate membrane separation component 111 is fixedly connected with the cylinder 101 and located in the cylinder 101, the rotating shaft 104 is rotatably connected with the cylinder 101 and extends into the cylinder 101, and the rotating shaft 104 is located below the flat-plate membrane separation component 111, the handle 105 is fixedly connected with the rotating shaft 104 and located below the cylinder 101, and a plurality of the stirring elements are arranged on the rotating shaft 104. When desulfurizing natural gas, calcium chloride solution is added into the cylinder 101, and the water surface of the calcium chloride solution is lower than the flat-plate membrane separation component 111. The handle 105 is rotated to drive the rotating shaft 104 and the plurality of the stirring elements to rotate. Natural gas is input into the cylinder 101 through the air inlet pipe 102. The natural gas enters the bottom of the cylinder 101 and enters the calcium chloride solution in the form of bubbles. The plurality of the rotating stirring elements crush the bubbles of the natural gas. The natural gas is fully contacted with the calcium chloride solution, so that the moisture in the natural gas enters the calcium chloride solution. The purified natural gas gas floats away from the calcium chloride solution and contacts with the flat-plate membrane separation component 111. H2S in the natural gas is separated from other gas components. The H2S gas passes through the flat-plate membrane separation component 111 and flows out of the cylinder 101 from the air outlet pipe 103. The natural gas is removed of moisture before being desulfurized by the membrane method, so as to ensure that the flat-plate membrane separation component 111 is not blocked and damaged by the moisture, thereby prolonging the service life of the device. In the flat-plate membrane separation component 111, H2S can more easily pass through the membrane due to its small molecular diameter, while other gas components are blocked by the membrane, so as to realize the separation and removal of H2S.

[0020] Further, the mounting cylinder 106 is fixedly connected with the rotating shaft 104 and located below the flat-plate membrane separation component 111. The two rotating plates 107 are fixedly connected with the mounting cylinder 106 and respectively located at two ends of the mounting cylinder 106.

[0021] In the embodiment, when desulfurizing natural gas, calcium chloride solution is added into the cylinder 101, and the water surface of the calcium chloride solution is lower than the flat membrane separation component 111. The knob 105 is rotated to drive the rotating shaft 104 and the plurality of stirring elements to rotate. Natural gas is input into the cylinder 101 through the gas inlet pipe 102. The natural gas enters the bottom of the cylinder 101 and enters the calcium chloride solution in the form of bubbles. The plurality of rotating rotating plates 107 stir the bubbles of the natural gas. The natural gas is fully contacted with the calcium chloride solution, so that the moisture in the natural gas enters the calcium chloride solution. The moisture in the natural gas reacts with the calcium chloride solution to generate hydrate precipitate, thereby removing the moisture. The purified natural gas gas floats away from the calcium chloride solution and contacts the flat membrane separation component 111. H2S in the natural gas is separated from other gas components. The H2S gas passes through the flat membrane separation component 111 and flows out of the cylinder 101 from the gas outlet pipe 103. The moisture in the natural gas is removed before the membrane desulfurization, which ensures that the moisture does not block and damage the flat membrane separation component 111, thereby prolonging the service life of the device.

[0022] Further, the guide plate 108 is fixedly connected with the cylinder 101 and located in the cylinder 101, and the guide plate 108 is located above the gas inlet pipe 102.

[0023] In the embodiment, the guide plate 108 can guide the natural gas to flow directly below the plurality of rotating plates 107, so that the natural gas is fully stirred by the plurality of rotating plates 107 during the rising process, thereby thoroughly removing the moisture in the natural gas.

[0024] Further, the mounting plate 110 is fixedly connected with the cylinder 101 and located in the cylinder 101. The inner side wall of the rotating ring 109 is rotationally connected with the rotating shaft 104, and the outer side wall of the rotating ring 109 is rotationally connected with the mounting plate 110.

[0025] In the embodiment, because the resistance in the calcium chloride solution is large, when the rotating shaft 104 drives the plurality of rotating plates 107 to rotate, the top end of the rotating shaft 104 rotates in the rotating ring 109. The mounting plate 110 and the rotating ring 109 limit the rotating shaft 104, so that the rotating shaft 104 does not dislocate during rotation in the calcium chloride solution, thereby increasing the structural stability of the device.

[0026] Further, the two mounting rings 112 are fixedly connected with the inner side wall of the cylinder 101, and the flat membrane separation component 111 is located between the two mounting rings 112.

[0027] In the embodiment, the installation ring 112 is arranged to strengthen the connection between the flat plate membrane separation component 111 and the barrel 101, and to seal the gap between the flat plate membrane separation component 111 and the barrel 101.

[0028] When the natural gas is desulfurized by using the utility model, the calcium chloride solution is added into the barrel 101, and the water surface of the calcium chloride solution is lower than the flat plate membrane separation component 111; the knob 105 is rotated to drive the rotating shaft 104 and the plurality of stirring elements to rotate; the natural gas is input into the barrel 101 through the gas inlet pipe 102; the natural gas enters the bottom of the barrel 101 and enters the calcium chloride solution in the form of bubbles; the rotating plates 107 stir the bubbles of the natural gas; the natural gas is fully contacted with the calcium chloride solution, so that the moisture in the natural gas enters the calcium chloride solution; the moisture in the natural gas and the calcium chloride solution react to generate hydrate precipitate, thereby removing the moisture; the purified natural gas gas floats away from the calcium chloride solution and contacts the flat plate membrane separation component 111; the H2S in the natural gas is separated from other gas components; the H2S gas passes through the flat plate membrane separation component 111 and flows out of the barrel 101 from the gas outlet pipe 103; the natural gas is removed of moisture before being desulfurized by the membrane method, so that the flat plate membrane separation component 111 is not blocked and damaged by the moisture, and the service life of the device is prolonged.

[0029] The above only discloses a preferred embodiment of the application, and cannot limit the scope of the application. Those skilled in the art can understand that all or part of the above-mentioned processes can be implemented, and equivalent changes can be made according to the claims of the application, which still belong to the scope of the application.

Claims

1. A gas pretreatment device in a membrane natural gas separation and purification process, characterized in that, it comprises a cylinder, an inlet pipe, an outlet pipe, a flat membrane separation component and a purification mechanism, the purification mechanism comprises a rotating shaft, a rotating handle and a plurality of stirring elements, the inlet pipe is fixedly connected with the cylinder and located at the lower end of the cylinder, the outlet pipe is fixedly connected with the cylinder and located above the cylinder, the flat membrane separation component is fixedly connected with the cylinder and located in the cylinder, the rotating shaft is rotatably connected with the cylinder and extends into the cylinder, and the rotating shaft is located below the flat membrane separation component, the rotating handle is fixedly connected with the rotating shaft and located below the cylinder, and a plurality of stirring elements are arranged on the rotating shaft.

2. The gas pretreatment device in a membrane natural gas separation and purification process according to claim 1, characterized in that, the stirring element comprises a mounting cylinder and two rotating plates, the mounting cylinder is fixedly connected with the rotating shaft and located below the flat membrane separation component, and two rotating plates are fixedly connected with the mounting cylinder and located at both ends of the mounting cylinder.

3. The gas pretreatment device in a membrane natural gas separation and purification process according to claim 2, characterized in that, the purification mechanism further comprises a guide plate, the guide plate is fixedly connected with the cylinder and located in the cylinder, and the guide plate is located above the inlet pipe.

4. The gas pretreatment device in a membrane natural gas separation and purification process according to claim 3, characterized in that, the purification mechanism further comprises a mounting plate and a rotating ring, the mounting plate is fixedly connected with the cylinder and located in the cylinder, the inner side wall of the rotating ring is rotatably connected with the rotating shaft, and the outer side wall of the rotating ring is rotatably connected with the mounting plate.

5. The gas pretreatment device in a membrane natural gas separation and purification process according to claim 4, characterized in that, the purification mechanism further comprises two mounting rings, the two mounting rings are fixedly connected with the inner side wall of the cylinder, and the flat membrane separation component is located between the two mounting rings.

Images