G1-level isopropanol production device
By designing a G1 grade isopropanol production device including a propylene refining raw material tank, a propylene refining tower and a reflux system, the problem that the prior art cannot effectively reduce the organic impurities and moisture content of industrial grade isopropanol is solved, and the production of high-quality G1 grade isopropanol is achieved.
Patent Information
- Application Number
- CN202421562200.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-04
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-07-04
AI Technical Summary
The existing industrial grade isopropanol devices cannot effectively reduce organic impurities and moisture content, and cannot meet the quality requirements of G1 grade isopropanol products.
A G1 grade isopropanol production device is designed, including a propylene purification raw material tank, a propylene purification tower and a reflux system. The carbon three and carbon four components are separated through the propylene purification tower, and 1.0MPa steam or high-temperature condensate is used as a heat source to reduce organic impurities and water content.
It has achieved effective reduction of the organic impurities and moisture content of industrial grade isopropanol, comply with the G1 grade isopropanol product standards, and produced high-quality G1 grade isopropanol products.
Smart Images
Figure CN222753251U_ABST
Abstract
Description
Technical field:
[0001] The utility model relates to the technical field of isopropanol production, in particular to a G1-level isopropanol production device. Background technology:
[0002] Industrial-grade isopropyl alcohol is an important chemical product of Jinzhou Petrochemical Company. The industrial-grade isopropyl alcohol device mainly consists of a hydration unit and a refining unit. The hydration unit is a primary product generated by propylene and water under the action of a catalyst, and then a qualified industrial-grade isopropyl alcohol is produced through deetherification, concentration, dehydration, and deweighting refining units. The raw material propylene is the propylene produced after refining by the upstream gas separation device as the raw material for the production of industrial-grade isopropyl alcohol. In addition, in the process of producing industrial-grade isopropyl alcohol in the hydration unit, in addition to isopropyl alcohol being the main reaction product of the hydration reaction, there are many side reactions because its catalyst selectivity does not reach 100%, including: propylene superposition to generate superposition oil, isopropyl alcohol dehydration to generate isopropyl ether, propylene hydration to generate n-propanol, isopropyl alcohol dehydrogenation to generate acetone, etc. The by-products produced are processed in the refining unit to reduce their concentration to within the national standard range for industrial-grade isopropyl alcohol, but cannot meet the requirements of G1-grade isopropyl alcohol products.
[0003] By benchmarking the SEMI industry standards for electronic-grade isopropyl alcohol and investigating related companies, it is confirmed that the production of G2-G5 grade isopropyl alcohol mainly reduces metal ions, acid ions, etc., and has no ability to remove organic impurities. The downstream chip industry has higher quality requirements for organic impurities and water content. Therefore, there is an urgent need for a G1 grade isopropyl alcohol production device that can reduce the organic impurity content and water content of industrial-grade isopropyl alcohol. Utility model content:
[0004] The technical problem to be solved by the utility model is to provide a G1-grade isopropyl alcohol production device, which can reduce the organic impurity content and water content of industrial-grade isopropyl alcohol, meet the G1-grade isopropyl alcohol product standard, and produce high-quality G1-grade isopropyl alcohol products.
[0005] The technical scheme adopted by the utility model is: a G1-level isopropanol production device comprises a propylene refined raw material tank, the propylene refined raw material tank is connected with a propylene refined raw material pump through a pipeline, the propylene refined raw material pump is connected with a propylene refined tower through a pipeline, the top outlet end of the propylene refined tower is connected with a tower top cooler, the tower top cooler is connected with a reflux tank, the reflux tank is connected with a reflux pump through a pipeline, the reflux pump is respectively connected with the propylene refined tower and the propylene raw material tank of an industrial-grade isopropanol device through pipelines, the bottom outlet end of the propylene refined tower is connected with a compressor outlet cooler, and the compressor outlet cooler is connected with a gas-fractionated crude propylene tank through a pipeline.
[0006] Furthermore, the propylene refining raw material tank comprises a raw material propylene feed port from a gas separation device, a circulating propylene feed port from a hydration unit, and a start-up propane feed port from a tank area.
[0007] Furthermore, the propylene is separated into C3 and C4 components in the propylene refining tower.
[0008] Furthermore, the bottom of the propylene refining tower uses 1.0 MPa steam or high-temperature condensed water as a heat source.
[0009] The beneficial effects of the utility model are as follows: the utility model device combines with the original industrial-grade isopropyl alcohol device to produce high-quality G1-grade isopropyl alcohol products, reduces the organic impurity content and water content of the industrial-grade isopropyl alcohol, meets the standard requirements of the G1-grade isopropyl alcohol product, has a simple device structure, and a simple process flow. Description of the drawings:
[0010] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0011] Figure 1 It is a structural schematic diagram of the utility model. Specific implementation method:
[0012] like Figure 1 As shown, a G1-grade isopropanol production device comprises a propylene refined raw material tank 1, the propylene refined raw material tank 1 is connected to a propylene refined raw material pump 2 through a pipeline, the propylene refined raw material pump 2 is connected to a propylene refined tower 3 through a pipeline, the top outlet end of the propylene refined tower 3 is connected to a tower top cooler 4, the tower top cooler 4 is connected to a reflux tank 6, the reflux tank 6 is connected to a reflux pump 5 through a pipeline, the reflux pump 5 is respectively connected to the propylene refined tower 3 and the propylene raw material tank of the industrial-grade isopropanol device through pipelines, the bottom outlet end of the propylene refined tower 3 is connected to a compressor outlet cooler, and the compressor outlet cooler is connected to a gas fraction crude propylene tank through a pipeline.
[0013] The propylene refining raw material tank 1 comprises a raw material propylene feed port from a gas separation device, a circulating propylene feed port from a hydration unit, and a start-up propane feed port from a tank area.
[0014] The propylene refining tower 3 separates the C3 and C4 components of propylene.
[0015] The bottom of the propylene refining tower 3 uses 1.0 MPa steam or high-temperature condensed water as a heat source.
[0016] When in use, the propylene from the gas fraction first enters the propylene refined raw material tank 1, and after being pressurized by the propylene refined raw material pump 2, enters the propylene refining tower 3 to separate the carbon three and carbon four components. The oil and gas at the top of the propylene refining tower 3 are cooled by the top cooler 4 and enter the reflux tank 6. The condensate is extracted from the reflux tank 6 by the reflux pump 5, a part of which is returned to the propylene refining tower 3 as the top reflux, and the other part of the refined propylene enters the propylene raw material tank of the industrial-grade isopropanol device, and is processed into G1-grade isopropanol by the industrial-grade device. The crude propylene at the bottom of the propylene refining tower 3 is cooled by the compressor outlet cooler and enters the crude propylene tank of the gas fraction.
[0017] In addition, the circulating propylene of the hydration unit and the propane required for the start-up are provided with feed ports, and they can enter the propylene refining tower 3 for processing to remove impurities when production requires. The bottom of the propylene refining tower 3 uses 1.0MPa steam or high-temperature condensed water as a heat source. During normal production, high-temperature condensed water is used as a heat source to save steam. When the device is abnormal or the high-temperature condensed water is abnormal, it can be switched to steam to ensure that production is not affected.
[0018] Example 1
[0019] During the start-up and initial production of propylene refining tower 3, 1.0MPa steam was used as the heat source at the bottom of the tower, the pressure at the top of the tower was controlled at 1.8MPa, the top of the tower was qualified, and the production was stable. The heat source at the bottom of the tower was changed to high-temperature condensed water, the production conditions remained stable, and the quality of propylene cut from the top of the tower did not fluctuate.
[0020] After the transformation, the original industrial-grade isopropyl alcohol device combined with the utility model device produces 3t / h of high-quality G1-grade isopropyl alcohol product. Calculated based on an annual production of 8,000h, the annual production capacity reaches 24,000t.
[0021] It can be understood that the above specific description of the utility model is only used to illustrate the utility model and is not limited to the technical solution described in the embodiments of the utility model. Ordinary technicians in the field should understand that the utility model can still be modified or replaced by equivalents to achieve the same technical effect; as long as the use requirements are met, they are within the protection scope of the utility model.
Claims
1. A G1 grade isopropanol production device, characterized in that: The invention comprises a propylene refined raw material tank (1), wherein the propylene refined raw material tank (1) is connected to a propylene refined raw material pump (2) through a pipeline, the propylene refined raw material pump (2) is connected to a propylene refined tower (3) through a pipeline, the top outlet of the propylene refined tower (3) is connected to a tower top cooler (4), the tower top cooler (4) is connected to a reflux tank (6), the reflux tank (6) is connected to a reflux pump (5) through a pipeline, the reflux pump (5) is respectively connected to the propylene refined tower (3) and the propylene raw material tank of an industrial-grade isopropanol device through pipelines, the bottom outlet of the propylene refined tower (3) is connected to a compressor outlet cooler, and the compressor outlet cooler is connected to a gas fraction crude propylene tank through a pipeline.
2. The G1-level isopropyl alcohol production device according to claim 1, characterized in that: The propylene refining raw material tank (1) comprises a raw material propylene feed port from a gas separation device, a circulating propylene feed port from a hydration unit, and a start-up propane feed port from a tank area.
3. The G1-level isopropyl alcohol production device according to claim 1, characterized in that: The propylene refining tower (3) separates the C3 and C4 components of propylene.
4. The G1-level isopropyl alcohol production device according to claim 1, characterized in that: The bottom of the propylene refining tower (3) uses 1.0 MPa steam or high-temperature condensed water as a heat source.