Device for preparing liquid carbon dioxide through natural gas cold energy

Abstract

The utility model discloses a device for preparing liquid carbon dioxide from natural gas cold energy, which belongs to the technical field of liquid carbon dioxide preparation devices and comprises a preparation tank, a cover plate mounted at an opening in the top of the preparation tank, a charging valve inserted on the surface of the cover plate, and a drain valve communicated with the bottom of the preparation tank. And an air inlet pipe is inserted into the surface of the cover plate, and a temperature control assembly is installed outside the preparation tank. Materials are added into the preparation tank from the opening position of the feeding valve, natural gas is communicated with the gas inlet pipe and the gas pipe connector A through an external pipeline and is added in a pressurized mode, and the natural gas entering from the gas inlet pipe cools the environment in the preparation tank. Natural gas entering from the gas pipe joint A performs auxiliary cooling treatment on the outside of the preparation tank along the metal coil pipe, so that liquid carbon dioxide is prepared under the action of cold energy of the natural gas, and the use effect is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid carbon dioxide preparation device technical field, more specifically, relate to a kind of natural gas cold energy preparation liquid carbon dioxide device. BACKGROUND

[0002] Liquid carbon dioxide refers to the liquid form of carbon dioxide gas liquefied under high pressure and low temperature conditions. Liquid carbon dioxide is a colorless transparent liquid.

[0003] After searching, the existing announcement No. CN221348769U, a kind of liquid carbon dioxide storage tank, including outer storage tank and inner storage tank, the bottom of outer storage tank equidistant fixedly connected with support leg, the side between support leg is fixedly connected with fixed plate, the top of outer storage tank is provided with gas inlet, outer storage tank is provided with inner storage tank, the top and bottom of inner storage tank are provided with connecting assembly, connecting assembly is used to fix inner storage tank, the inside of outer storage tank and the outside of inner storage tank are provided with buffer assembly, buffer assembly is used to buffer inner storage tank. The utility model is to solve, because the device when injecting liquid carbon dioxide into inner tank body, inner tank body will be deformed due to low temperature, eight-point support structure between inner tank body and outer tank body will cause damage to inner tank body and outer tank body, not conducive to actual use.

[0004] Using LNG cold energy to prepare liquid CO2 or dry ice can reduce the energy consumption and investment cost of traditional liquefaction process. However, the device for preparing liquid carbon dioxide from natural gas cold energy cannot fully utilize the cold energy of natural gas, affecting the preparation of liquid carbon dioxide. Therefore, we propose a natural gas cold energy liquid carbon dioxide preparation device to solve the above problems. SUMMARY

[0005] 1. Technical problem to be solved

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a natural gas cold energy liquid carbon dioxide preparation device. The surface of the cover plate is inserted with an air inlet pipe, and a temperature control assembly is installed outside the preparation tank. The material is added to the preparation tank from the opening position of the feeding valve. The natural gas is connected to the air inlet pipe and the gas pipe joint A through the external pipeline and is pressurized to be added. The natural gas entering from the air inlet pipe position cools the environment inside the preparation tank. The natural gas entering from the gas pipe joint A cools the outside of the preparation tank along the metal coil pipe. Thus, under the action of natural gas cold energy, liquid carbon dioxide is prepared, and the use effect is good.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solution.

[0009] The utility model provides a kind of natural gas cold energy preparation liquid carbon dioxide device, including preparation tank, cover plate is installed in the top opening position of the preparation tank, material valve is inserted in the surface of the cover plate, and drain valve is connected in the bottom of the preparation tank, the surface of the cover plate is inserted with gas inlet pipe, and temperature control assembly is installed outside the preparation tank;

[0010] Temperature control assembly includes the metal coil pipe coated outside the preparation tank, gas pipe joint A is connected in one end of the metal coil pipe, gas pipe joint B is connected in the other end of the metal coil pipe, and inner cylinder is coated outside the metal coil pipe.The surface of the cover plate is inserted with gas inlet pipe, and temperature control assembly is installed outside the preparation tank, material is added into the preparation tank from the opening position of material valve, and natural gas is connected and pressurized by external pipeline with gas inlet pipe and gas pipe joint A, then the natural gas entered from the position of gas inlet pipe is cooled to the environment inside the preparation tank, the natural gas entered from gas pipe joint A is along the metal coil pipe, and the outside of the preparation tank is assisted to cool, so that liquid carbon dioxide is prepared under the action of natural gas cold energy, and the use effect is good.

[0011] Preferably, the outer sleeve of the inner cylinder is provided with a heat preservation cotton cylinder, and the surface of the inner cylinder is provided with a reserved hole A and a reserved hole B.

[0012] Preferably, the reserved hole A penetrates the heat preservation cotton cylinder, and the reserved hole B penetrates the heat preservation cotton cylinder.

[0013] Preferably, the gas pipe joint A penetrates the reserved hole A of the inner cylinder, and the gas pipe joint B penetrates the reserved hole B of the inner cylinder.

[0014] Preferably, the outer side of the preparation tank is fixedly connected with a supporting ring and a supporting ring, and the supporting ring and the supporting ring are fixedly connected to both ends of the inner cylinder.

[0015] Preferably, the insertion end of the gas inlet pipe of the cover plate extends to the inside of the preparation tank.

[0016] Preferably, the surface of the cover plate is fixedly connected with a pressure gauge and a pressure relief valve, and the pressure gauge is located on one side of the pressure relief valve.

[0017] 3. Advantage

[0018] Compared with the prior art, the utility model has the advantages that:

[0019] (1) the surface of the cover plate is provided with an air inlet pipe, a temperature control assembly is installed outside the preparation tank, the material is added to the preparation tank from the opening position of the feeding valve, the natural gas is connected with the air inlet pipe and the gas pipe joint A through the external pipeline and is pressurized to be added, the natural gas entering from the position of the air inlet pipe is used for cooling the environment in the preparation tank, the natural gas entering from the gas pipe joint A is used for assisting the cooling of the outside of the preparation tank, so that the liquid carbon dioxide is prepared under the cold energy of the natural gas, and the use effect is good.

[0020] (2) the surface of the cover plate is fixedly connected with a pressure gauge and a pressure relief valve, the pressure gauge is used for measuring the pressure of the working environment in the preparation tank, the pressure relief valve is used for relieving the pressure in the preparation tank, the pressure in the preparation tank is controlled, and the safety of use is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 it is a three-dimensional structure schematic view of the utility model;

[0022] Figure 2 it is a preparation tank and metal coil structure schematic view of the utility model;

[0023] Figure 3 it is a heat insulation cotton cylinder and inner cylinder structure schematic view of the utility model;

[0024] Figure 4 it is another view structure schematic view of the heat insulation cotton cylinder and inner cylinder of the utility model.

[0025] Mark explanation in the drawing:

[0026] 1, cover plate, 2, feeding valve, 3, air inlet pipe, 4, pressure gauge, 5, pressure relief valve, 6, support ring, 7, support ring, 8, heat insulation cotton cylinder, 9, gas pipe joint A, 10, gas pipe joint B, 11, preparation tank, 12, liquid discharge valve, 13, metal coil, 14, inner cylinder, 15, reserved hole A, 16, reserved hole B. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model; Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments, based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the protection scope of the utility model.

[0028] Embodiment 1:

[0029] Please refer to Figures 1-4The utility model provides a kind of natural gas cold energy preparation liquid carbon dioxide device, including preparation tank 11, cover plate 1 installed in the top opening position of preparation tank 11, material feeding valve 2 is inserted in the surface of cover plate 1, and drain valve 12 is connected to the bottom of preparation tank 11, cover plate 1 surface inserts gas inlet pipe 3, and temperature control assembly is installed on the outside of preparation tank 11.

[0030] Temperature control assembly includes metal coil pipe 13 coated on the outside of preparation tank 11, gas pipe joint A9 connected to one end of metal coil pipe 13, gas pipe joint B10 connected to the other end of metal coil pipe 13, and inner cylinder 14 coated on the outside of metal coil pipe 13.

[0031] The outside of inner cylinder 14 is sleeved with heat preservation cotton cylinder 8, the surface of inner cylinder 14 is provided with reserved hole A15 and reserved hole B16, reserved hole A15 penetrates heat preservation cotton cylinder 8, reserved hole B16 penetrates heat preservation cotton cylinder 8, gas pipe joint A9 penetrates reserved hole A15 of inner cylinder 14, gas pipe joint B10 penetrates reserved hole B16 of inner cylinder 14, and support ring 6 and supporting ring 7 are fixedly connected to the both ends of inner cylinder 14.

[0032] It should be noted that cover plate 1 surface inserts gas inlet pipe 3, and temperature control assembly is installed on the outside of preparation tank 11, material is added to preparation tank 11 from the opening position of material feeding valve 2, and then natural gas is added by being connected to gas inlet pipe 3 and gas pipe joint A9 through external pipeline and pressurized, so that the natural gas entering the position of gas inlet pipe 3 cools the environment inside preparation tank 11, the natural gas entering from gas pipe joint A9 cools the outside of preparation tank 11 along metal coil pipe 13, so that liquid carbon dioxide is prepared under the action of natural gas cold energy, and the use effect is good; Metal coil pipe 13 is coated with inner cylinder 14, and the outside of inner cylinder 14 is sleeved with heat preservation cotton cylinder 8, so that good heat preservation performance is achieved.

[0033] Referring to Figures 1-4 The insertion end of gas inlet pipe 3 of cover plate 1 extends to the inside of preparation tank 11, and pressure gauge 4 and pressure relief valve 5 are fixedly connected to the surface of cover plate 1, and pressure gauge 4 is located on one side of pressure relief valve 5.

[0034] It should be noted that pressure gauge 4 and pressure relief valve 5 are fixedly connected to the surface of cover plate 1, pressure gauge 4 measures the pressure of the working environment inside preparation tank 11, pressure relief valve 5 is used for pressure relief treatment inside preparation tank 11, and the pressure inside preparation tank 11 is controlled, so that the safety of use is improved.

[0035] In use: the surface of the cover plate 1 is inserted with the air inlet pipe 3, the outside of the preparation tank 11 is installed with the temperature control assembly, the material is added into the preparation tank 11 from the opening position of the feeding valve 2, the natural gas is connected with the air inlet pipe 3 and the gas pipe joint A9 through the external pipeline and is pressurized to be added, then the natural gas entering from the position of the air inlet pipe 3 reduces the temperature of the environment inside the preparation tank 11, the natural gas entering from the gas pipe joint A9 is along the metal coil pipe 13, the outside of the metal coil pipe 13 is coated with the inner cylinder 14, the outer sleeve of the inner cylinder 14 is provided with the heat preservation cotton cylinder 8, and the heat preservation performance is good; the surface of the cover plate 1 is fixedly connected with the pressure gauge 4 and the pressure relief valve 5, the pressure gauge 4 carries out pressure measurement treatment on the working environment inside the preparation tank 11, the pressure relief valve 5 is used for pressure relief treatment inside the preparation tank 11, and the pressure inside the preparation tank 11 is controlled, and the safety in use is improved.

[0036] The above merely describes a preferred embodiment of the present application; however, the protection scope of the present application is not limited to this. Any skilled person in the art, according to the technical scheme and the improvement concept of the present application, should be covered in the protection scope of the present application.

Claims

1. A device for producing liquid carbon dioxide from natural gas cold energy, comprising a preparation tank (11), a cover plate (1) installed at an opening position on the top of the preparation tank (11), a feeding valve (2) inserted on the surface of the cover plate (1), and a liquid discharge valve (12) connected to the bottom of the preparation tank (11), characterized in that: The cover plate (1) is surface-inserted with an air inlet pipe (3), and the preparation tank (11) is externally provided with a temperature control assembly; The temperature control assembly comprises a metal coil pipe (13) wrapped outside the preparation tank (11), an air pipe joint A (9) connected to one end of the metal coil pipe (13), an air pipe joint B (10) connected to the other end of the metal coil pipe (13), and an inner cylinder (14) wrapped outside the metal coil pipe (13).

2. The device for preparing liquid carbon dioxide by cold energy of natural gas according to claim 1, characterized in that: The outer part of the inner cylinder (14) is sleeved with a heat preservation cotton cylinder (8), and the surface of the inner cylinder (14) is provided with a reserved hole A (15) and a reserved hole B (16).

3. The device for producing liquid carbon dioxide by cold energy of natural gas according to claim 2, characterized in that: The reserved hole A (15) penetrates the heat preservation cotton cylinder (8), and the reserved hole B (16) penetrates the heat preservation cotton cylinder (8).

4. The device for producing liquid carbon dioxide by cold energy of natural gas according to claim 1, characterized in that: The air pipe joint A (9) penetrates the reserved hole A (15) of the inner cylinder (14), and the air pipe joint B (10) penetrates the reserved hole B (16) of the inner cylinder (14).

5. The device for producing liquid carbon dioxide by cold energy of natural gas according to claim 1, characterized in that: The outer part of the preparation tank (11) is fixedly connected with a supporting ring (6) and a supporting ring (7), and the supporting ring (6) and the supporting ring (7) are fixedly connected to both ends of the inner cylinder (14).

6. The device for producing liquid carbon dioxide by cold energy of natural gas according to claim 1, characterized in that: The insertion end of the air inlet pipe (3) of the cover plate (1) extends to the inside of the preparation tank (11).

7. The device for producing liquid carbon dioxide by cold energy of natural gas according to claim 1, characterized in that: The surface of the cover plate (1) is fixedly connected with a pressure gauge (4) and a pressure relief valve (5), and the pressure gauge (4) is located on one side of the pressure relief valve (5).

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