CN211706728U - Constant temperature gasification device for preparing DME from carbon dioxide - Google Patents
Constant temperature gasification device for preparing DME from carbon dioxide Download PDFInfo
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- CN211706728U CN211706728U CN201922328450.4U CN201922328450U CN211706728U CN 211706728 U CN211706728 U CN 211706728U CN 201922328450 U CN201922328450 U CN 201922328450U CN 211706728 U CN211706728 U CN 211706728U
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Abstract
The utility model belongs to coal chemical industry and petrochemical field mainly are applied to carbon dioxide system DME experiment, relate to carbon dioxide system DME constant temperature gasification equipment, its characterized in that: the constant temperature gasification device comprises a constant temperature gasification tank and a constant temperature water bath box, wherein a constant temperature coil is arranged in the constant temperature gasification tank, and an inlet and an outlet of the constant temperature coil extend into the constant temperature water bath box. The utility model can accurately control the temperature of the carbon dioxide gas; the flow rate of the carbon dioxide gas can be accurately controlled; the prepared carbon dioxide gas has stable temperature, pressure and airspeed and is not influenced by the environment.
Description
Technical Field
The utility model belongs to coal chemical industry and petrochemical field relate to the DME synthesis. The device is mainly applied to the test of preparing DME from carbon dioxide.
Background
Dimethyl ether has the heat value of about 64.686MJ/m and the oxygen content of 34.8 percent, can be fully combusted, does not precipitate carbon and has no residual liquid, is an ideal clean fuel, is mainly used as civil fuel and automobile fuel, and is a supplement for fuel structures in China. Meanwhile, dimethyl ether is also an important organic synthetic raw material and has wide application in the field of chemical synthesis.
China is a country with more coal, poor oil and less gas, in recent years, under the encouragement and support of national policies, the coal chemical industry is vigorously developed, products such as coal-to-liquids, natural gas, olefin, dimethyl ether and the like in the coal chemical industry are widely researched as a substitute scheme of petroleum energy, coal-to-dimethyl ether is produced by taking coal-to-synthesis gas as a raw material, the process is relatively simple, the investment is small, the effect is fast, in recent years, the rapid development is achieved, and the capacity conservation estimation of the production device of dimethyl ether in China at present is over 500 ten thousand tons.
The DME prepared by carbon dioxide is prepared by mixing carbon dioxide and hydrogen and synthesizing dimethyl ether under the action of a catalyst. The method is an important means for energy storage and centralized pollution treatment by taking carbon dioxide as a carrier of fuel.
It is well known that at ambient temperature, carbon dioxide is liquid under high pressure conditions and absorbs a large amount of heat during gasification. This results in a decrease in the temperature at the valve port, and especially when the flow rate is large, the flow rate of the released carbon dioxide is unstable, and even the carbon dioxide cannot be gasified in severe cases, which seriously affects the accuracy of research data such as DME synthesis and catalyst evaluation.
Disclosure of Invention
The utility model discloses a DME constant temperature gasification equipment to make carbon dioxide gas flow, temperature steady, improve DME and test the effect in the synthetic process.
The technical solution of the utility model is as follows: carbon dioxide system DME constant temperature gasification equipment which characterized in that: the constant temperature gasification device comprises a constant temperature gasification tank and a constant temperature water bath box, wherein a constant temperature coil is arranged in the constant temperature gasification tank, and an inlet and an outlet of the constant temperature coil extend into the constant temperature water bath box.
Preferably, the corrosion-resistant high-strength constant-temperature gasification tank made of special alloy steel has the maximum bearing pressure of 15.0MPa and the maximum bearing temperature of 100 ℃.
Preferably, a water bath delivery pump is arranged on an inlet pipeline or an outlet pipeline of the thermostatic coil.
Preferably, the corrosion-resistant high-strength constant-temperature coil pipe made of special alloy steel is uniformly distributed in the constant-temperature gasification tank in an annular shape.
Preferably, the constant temperature water bath tank is connected with a carbon dioxide gas source and a gas flowmeter.
Preferably, the constant temperature water bath box comprises a constant temperature water bath and a constant temperature water bath cover plate, wherein a heating unit is arranged in the constant temperature water bath and is connected with a program temperature control device.
Preferably, the constant-temperature water bath made of stainless steel bears the temperature of 0-100 ℃.
Preferably, a pressure balance port and a stainless steel temperature measuring tube are arranged on the stainless steel thermostatic water bath cover plate.
Preferably, the water bath delivery pump is subjected to a maximum temperature of 100 ℃.
The utility model discloses the device adds appropriate deionized water for the constant temperature water bath earlier before the use, opens the temperature heating of heater water bath in with the constant temperature water bath to predetermineeing the temperature, connects the carbon dioxide air supply, and carbon dioxide gets into the constant temperature vaporizer, and the coil pipe outer wall in carbon dioxide gas and the constant temperature vaporizer carries out abundant contact, heat transfer to experimental required temperature, and gas after the heat transfer passes through gas flowmeter and gets into the reaction unit as reaction raw materials.
The technical advantages of the utility model are that:
the temperature of the carbon dioxide gas can be accurately controlled;
the flow rate of the carbon dioxide gas can be accurately controlled;
the prepared carbon dioxide gas has stable temperature, pressure and airspeed and is not influenced by the environment.
Drawings
Fig. 1 is a schematic view of a connection structure of a constant temperature gasification device according to an embodiment of the present invention.
In the figure, 1-carbon dioxide gas cylinder; 2-carbon dioxide gas valve; 3-constant temperature gasification tank; 4-constant temperature coil pipe; 5, a pressure gauge; 6, a constant temperature water bath; 7-a heating unit; 8-cover plate of constant temperature water bath box; 9-pressure balance port; 10-temperature measuring tube; 11-water bath delivery pump; 12-gas flow meter.
Detailed Description
The present invention will be further explained with reference to the following embodiments and drawings.
Examples
Referring to the attached figure 1, the constant-temperature gasification device for preparing DME from carbon dioxide mainly comprises a constant-temperature gasification tank 3 and a constant-temperature water bath box, wherein a constant-temperature coil 4 is arranged in the constant-temperature gasification tank 3, and an inlet and an outlet of the constant-temperature coil 4 extend into the constant-temperature water bath box.
In the embodiment, the corrosion-resistant high-strength constant-temperature coil pipes 4 made of special alloy steel are uniformly distributed in the constant-temperature gasification tank 3 in an annular shape. A water bath delivery pump 11 is arranged on an inlet pipeline of the constant temperature coil 4.
In the embodiment, the constant temperature water bath tank is connected with a carbon dioxide gas steel cylinder 1 and a gas flowmeter 12, the constant temperature water bath tank comprises a constant temperature water bath 6 and a constant temperature water bath cover plate 8, a heating unit 7 is arranged in the constant temperature water bath, and the heating unit 7 is connected with a program temperature control device; a stainless steel thermostatic water bath cover plate 8 is provided with a pressure balance port 9 and a stainless steel temperature measuring tube 10.
In the embodiment, the corrosion-resistant high-strength constant-temperature gasification tank 3 made of special alloy steel has the maximum bearing pressure of 15.0MPa and the maximum bearing temperature of 100 ℃; a constant-temperature water bath made of stainless steel bears the temperature of 0-100 ℃; the maximum bearing temperature of the water bath delivery pump is 100 ℃.
In the embodiment, the constant temperature water bath is sealed by a constant temperature water bath cover plate with a pressure balance port, and the constant temperature water bath cover plate is provided with the pressure balance port to realize the pressure balance between the constant temperature water bath and the outside; a heater is adopted in the constant temperature water bath for heating; the temperature of the water bath in the constant-temperature water bath tank is monitored by a temperature control unit, and the temperature is adjusted by a heater; the heated water bath is conveyed by a water bath conveying pump, enters a coil pipe in the constant-temperature gasification tank and finally returns to the constant-temperature water bath tank through a coil pipe outlet.
The embodiment adds the deionized water for constant temperature water bath 1 earlier before using, adopt heating element 7 to heat the water bath, the water bath temperature carries out the temperature measurement through the galvanic couple that inserts temperature measurement buret 10, the water bath that reaches the temperature passes through water bath delivery pump 11 and carries the constant temperature coil pipe 4 that gets into in the constant temperature vaporizer 3, open carbon dioxide gas valve 2 on the carbon dioxide gas steel bottle 1, carbon dioxide gas carries out abundant contact heat transfer with constant temperature coil pipe 4 outer wall in the constant temperature vaporizer 3, carbon dioxide gas after the heat transfer gets into gas flowmeter 12, get into the DME synthesis unit after the measurement.
The embodiment is used for the carbon dioxide DME constant-temperature gasification device, and can accurately control the temperature of carbon dioxide gas; the flow rate of the carbon dioxide gas can be accurately controlled; the prepared carbon dioxide gas has stable temperature, pressure and airspeed and is not influenced by the environment.
Claims (9)
1. A carbon dioxide system DME constant temperature gasification equipment which characterized in that: the constant temperature gasification device comprises a constant temperature gasification tank and a constant temperature water bath box, wherein a constant temperature coil is arranged in the constant temperature gasification tank, and an inlet and an outlet of the constant temperature coil extend into the constant temperature water bath box.
2. The carbon dioxide-DME constant temperature gasification apparatus according to claim 1, wherein: the corrosion-resistant high-strength constant-temperature gasification tank made of special alloy steel has the maximum bearing pressure of 15.0MPa and the maximum bearing temperature of 100 ℃.
3. The carbon dioxide-DME constant temperature gasification apparatus according to claim 1, wherein: and a water bath delivery pump is arranged on an inlet pipeline or an outlet pipeline of the constant temperature coil.
4. The carbon dioxide-to-DME constant temperature gasification apparatus according to claim 1 or 3, characterized in that: the corrosion-resistant high-strength constant-temperature coil pipe made of special alloy steel is uniformly distributed in a constant-temperature gasification tank in an annular shape.
5. The carbon dioxide-DME constant temperature gasification apparatus according to claim 1, wherein: the constant temperature water bath box is connected with a carbon dioxide gas source and a gas flowmeter.
6. The carbon dioxide-to-DME constant temperature gasification device according to claim 1 or 5, characterized in that: the constant temperature water bath tank comprises a constant temperature water bath tank and a constant temperature water bath tank cover plate, wherein a heating unit is arranged in the constant temperature water bath tank, and the heating unit is connected with a program temperature control device.
7. The carbon dioxide-DME constant-temperature gasification device according to claim 6, characterized in that: the constant-temperature water bath made of stainless steel bears the temperature of 0-100 ℃.
8. The carbon dioxide-DME constant-temperature gasification device according to claim 6, characterized in that: the cover plate of the stainless steel thermostatic water bath box is provided with a pressure balance port and a stainless steel temperature measuring tube.
9. The carbon dioxide-DME constant temperature gasification apparatus according to claim 3, wherein: the maximum bearing temperature of the water bath delivery pump is 100 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922328450.4U CN211706728U (en) | 2019-12-23 | 2019-12-23 | Constant temperature gasification device for preparing DME from carbon dioxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922328450.4U CN211706728U (en) | 2019-12-23 | 2019-12-23 | Constant temperature gasification device for preparing DME from carbon dioxide |
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| Publication Number | Publication Date |
|---|---|
| CN211706728U true CN211706728U (en) | 2020-10-20 |
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| CN201922328450.4U Active CN211706728U (en) | 2019-12-23 | 2019-12-23 | Constant temperature gasification device for preparing DME from carbon dioxide |
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Address after: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: SINOPEC NANJING CHEMICAL RESEARCH INSTITUTE Co.,Ltd. Address before: Liuhe District of Nanjing City, Jiangsu province 210048 geguan Road No. 699 Patentee before: SINOPEC NANJING CHEMICAL RESEARCH INSTITUTE Co.,Ltd. Patentee before: CHINA PETROLEUM & CHEMICAL Corp. |
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