CN115727559A - A combination formula refrigeration ice maker for ketene dimer production - Google Patents
A combination formula refrigeration ice maker for ketene dimer production Download PDFInfo
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- CN115727559A CN115727559A CN202211461733.6A CN202211461733A CN115727559A CN 115727559 A CN115727559 A CN 115727559A CN 202211461733 A CN202211461733 A CN 202211461733A CN 115727559 A CN115727559 A CN 115727559A
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- Prior art keywords
- shallow
- cooling
- ammonia
- brine
- heat exchanger
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- WASQWSOJHCZDFK-UHFFFAOYSA-N diketene Chemical compound C=C1CC(=O)O1 WASQWSOJHCZDFK-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 238000005057 refrigeration Methods 0.000 title claims abstract description 13
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 134
- 238000001816 cooling Methods 0.000 claims abstract description 98
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 52
- 239000012267 brine Substances 0.000 claims abstract description 49
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims abstract description 49
- 239000007791 liquid phase Substances 0.000 claims description 4
- 239000012071 phase Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 239000000112 cooling gas Substances 0.000 abstract description 4
- 150000003839 salts Chemical class 0.000 abstract 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- CCGKOQOJPYTBIH-UHFFFAOYSA-N ethenone Chemical compound C=C=O CCGKOQOJPYTBIH-UHFFFAOYSA-N 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
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- Sorption Type Refrigeration Machines (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
A combined refrigeration ice machine for ketene dimer production comprises an ammonia tank, a distribution cylinder, an evaporative condenser, a shallow cooling component and a deep cooling component, wherein the shallow cooling component is the same as the deep cooling component and comprises a heat exchanger, a compressor, a salt water tank and a salt water pump; the ammonia tank is connected with a distribution cylinder, the distribution cylinder is respectively connected with liquid ammonia inlets of shallow cooling and deep cooling heat exchangers, gas ammonia outlets of the shallow cooling and deep cooling heat exchangers are connected with corresponding compressors through gas ammonia pipes, a series pipeline is arranged between the shallow cold gas ammonia pipe and the deep cooling gas ammonia pipe, outlet pipelines of the shallow cooling and deep cooling compressors are combined and then connected with an evaporative condenser, and an outlet of the evaporative condenser is connected with the ammonia tank; the shallow cooling and deep cooling brine tanks are connected with corresponding heat exchangers through corresponding brine pumps, and brine outlets of the heat exchangers are led out to a production area. The ice machine adopts a combined structure, simultaneously provides a deep cooling cold source and a shallow cooling cold source, and the shallow cooling ammonia pipe and the deep cooling ammonia pipe are communicated through a serial pipeline, so that the shallow cooling load is transferred to the deep cooling load.
Description
Technical Field
The invention relates to a combined refrigeration ice machine for ketene dimer production.
Background
In the production process of the diketene, a plurality of cooling and refrigerating devices need to exchange heat, and intermediate materials and finished products in the production process need to be cooled, so that a reliable cooling source is needed. The temperature reduction of the brine is the main temperature reduction method in the current diketene device production (the brine is called as a popular method, and aims to reduce the freezing point of water so that the water can flow at a low temperature more easily, and in the actual production, the "brine" adopts a glycol solution). The brine cooling adopts a screw type refrigeration ice machine, which is shown in figure 1 and comprises an ammonia tank 1, a distribution cylinder 2, an evaporative condenser 3, a heat exchanger 4 (dry vapor heat exchanger), a compressor 5, a brine tank 6 and a brine pump 7, wherein a liquid ammonia outlet of the ammonia tank 1 is connected with a liquid ammonia inlet of the distribution cylinder 2, the distribution cylinder 2 is connected with a liquid ammonia inlet of the heat exchanger 4 through a liquid ammonia pipeline, a gas ammonia outlet of the heat exchanger 4 is connected with an inlet of the compressor 5 through a gas ammonia pipe, an outlet pipeline of the compressor 5 is connected with a gas phase inlet of the evaporative condenser 3, and a liquid phase outlet of the evaporative condenser 3 is connected with a liquid ammonia inlet of the ammonia tank 1; the brine tank 6 is connected with the brine inlet of the heat exchanger 4 through a brine pump 7, and the brine outlet of the heat exchanger 4 is led out to the production area.
The screw type ice-making machine uses a large amount of heat absorption to cool the glycol aqueous solution when the liquid ammonia is evaporated into ammonia gas at low pressure and low temperature, and the evaporated ammonia gas is pressurized to higher pressure and cooled and condensed into liquid ammonia by water for use, thus forming a refrigeration cycle. This cycle is repeated and the temperature of the material being cooled is advantageously reduced to meet process requirements. The gas ammonia is condensed into liquid ammonia, and the liquid ammonia is re-evaporated, which is completed by means of refrigeration circulation, and the refrigeration circulation mainly comprises four processes of compression, cooling condensation, throttling expansion and evaporation.
In the production of diketene, two cold sources with different temperatures are generally needed, one is a shallow cold source with higher temperature, and the other is a cryogenic cold source with lower temperature, the shallow cold source and the cryogenic cold source are respectively provided by a shallow ice machine and a cryogenic ice machine, the shallow ice machine and the cryogenic ice machine are both screw type ice machines, and the shallow ice machine and the cryogenic ice machine have the same structure, and the difference is that the 'saline water' adopted by the shallow ice machine is 38% of glycol solution, and the 'saline water' adopted by the cryogenic ice machine is 45% of glycol solution, so that two different cold sources can be provided.
In the actual production process, the usage amount of the cryogenic cold source of the refrigeration section of the diketene is less, the usage amount of the shallow cold source is more, the load of a shallow cold ice machine is larger, the load of a cryogenic ice machine is lighter, and the refrigeration load is unbalanced, so that production enterprises are forced to make adjustment, namely the load reduction production of the cryogenic ice machine, and meanwhile, two shallow cold ice machines are started to be used in parallel, so that the production requirement can be met. And one more shallow ice cooler brings great power consumption and maintenance cost, and affects the economic benefit of diketene production.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a combined type refrigeration ice machine for ketene dimer production, which adopts a combined type structure and simultaneously provides a deep cooling cold source and a shallow cooling cold source, wherein a shallow cooling ammonia pipe and a deep cooling ammonia pipe are communicated through a serial pipeline, so that the shallow cooling load is transferred to the deep cooling load, and the production requirement is met on the premise of not additionally opening another shallow cooling ice machine.
In order to solve the technical problem, the invention provides a combined type refrigerating ice machine for ketene dimer production, which comprises an ammonia tank, a distribution cylinder, an evaporative condenser, a shallow cooling assembly and a cryogenic assembly, wherein the shallow cooling assembly comprises a shallow cooling heat exchanger, a shallow cooling compressor, a shallow cooling brine tank and a shallow cooling brine pump, and the cryogenic assembly comprises a cryogenic heat exchanger, a cryogenic compressor, a cryogenic brine tank and a cryogenic brine pump;
a liquid ammonia outlet of the ammonia tank is connected with a liquid ammonia inlet of a distribution cylinder, the distribution cylinder is respectively connected with a liquid ammonia inlet of a shallow cooling heat exchanger and a liquid ammonia inlet of a deep cooling heat exchanger through two liquid ammonia pipelines, a gas ammonia outlet of the shallow cooling heat exchanger is connected with an inlet of a shallow cooling compressor through a shallow cold air ammonia pipe, a gas ammonia outlet of the deep cooling heat exchanger is connected with an inlet of the deep cooling compressor through a deep cooling gas ammonia pipe, a serial pipeline for communicating the shallow cold gas ammonia pipe and the deep cooling gas ammonia pipe is arranged between the shallow cold air ammonia pipe and the deep cooling gas ammonia pipe, an outlet pipeline of the shallow cooling compressor and an outlet pipeline of the deep cooling compressor are combined and then connected with a gas phase inlet of an evaporative condenser, and a liquid phase outlet of the evaporative condenser is connected with the liquid ammonia inlet of the ammonia tank;
the shallow cooling brine tank is connected with a brine inlet of the shallow cooling heat exchanger through a shallow cooling brine pump, a brine outlet of the shallow cooling heat exchanger is led out to the production area, the deep cooling brine tank is connected with a brine inlet of the deep cooling heat exchanger through a deep cooling brine pump, and a brine outlet of the deep cooling heat exchanger is led out to the production area.
For the sake of simplicity, the combined ice-making machine for the production of diketene of the present invention is simply referred to as the present machine below.
The ice maker has the advantages that: the ice machine adopts a combined structure, simultaneously provides a deep cooling cold source and a shallow cooling cold source, and the shallow cooling ammonia pipe and the deep cooling ammonia pipe are communicated through a serial pipeline, so that the shallow cooling load is transferred to the deep cooling load (the deep cooling suction pressure is normally 0.02Mpa, and the shallow cooling suction pressure is 0.07 Mpa), the residual load of a deep cooling compressor is fully utilized, and the refrigeration requirement of a double ketene device is met on the premise of not additionally opening another shallow ice machine. The power consumption and the maintenance cost are greatly reduced, the production operation process is simplified, and the labor intensity is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a conventional screw type ice-making machine.
Fig. 2 is a schematic structural view of the ice maker.
Detailed Description
Referring to fig. 2, a combined ice-making machine for diketene production comprises an ammonia tank 1, a distribution cylinder 2, an evaporative condenser 3, a shallow cooling assembly 91 and a cryogenic assembly 92, wherein the shallow cooling assembly 91 comprises a shallow cooling heat exchanger 41, a shallow cooling compressor 51, a shallow cooling brine tank 61 and a shallow cooling brine pump 71, and the cryogenic assembly 92 comprises a cryogenic heat exchanger 42, a cryogenic compressor 52, a cryogenic brine tank 62 and a cryogenic brine pump 72;
a liquid ammonia outlet of the ammonia tank 1 is connected with a liquid ammonia inlet of the distribution cylinder 2, the distribution cylinder 2 is respectively connected with a liquid ammonia inlet of the shallow cold heat exchanger 41 and a liquid ammonia inlet of the cryogenic heat exchanger 42 through two liquid ammonia pipelines, a gas ammonia outlet of the shallow cold heat exchanger 41 is connected with an inlet of the shallow cold compressor 51 through a shallow cold gas ammonia pipe 411, a gas ammonia outlet of the cryogenic heat exchanger 42 is connected with an inlet of the cryogenic compressor 52 through the cryogenic gas ammonia pipe 41, a serial pipeline 8 for communicating the shallow cold gas ammonia pipe 411 and the cryogenic gas ammonia pipe 41 is arranged between the shallow cold gas ammonia pipe 411 and the cryogenic gas ammonia pipe 41, an outlet pipeline of the shallow cold compressor 51 is combined with an outlet pipeline of the cryogenic compressor 52 and then connected with a gas phase inlet of the evaporative condenser 3, and a liquid phase outlet of the evaporative condenser 3 is connected with the liquid ammonia inlet of the ammonia tank 1;
the shallow cooling brine tank 61 is connected with a brine inlet of the shallow cooling heat exchanger 41 through a shallow cooling brine pump 71, a brine outlet of the shallow cooling heat exchanger 41 is led out to the production area, the deep cooling brine tank 62 is connected with a brine inlet of the deep cooling heat exchanger 42 through a deep cooling brine pump 72, and a brine outlet of the deep cooling heat exchanger 42 is led out to the production area.
Claims (1)
1. A combination formula refrigeration ice maker for ketene dimer production which characterized in that: the ammonia tank, the distribution cylinder, the evaporative condenser, the shallow cooling component and the deep cooling component are included, the shallow cooling component comprises a shallow cooling heat exchanger, a shallow cooling compressor, a shallow cooling brine tank and a shallow cooling brine pump, and the deep cooling component comprises a deep cooling heat exchanger, a deep cooling compressor, a deep cooling brine tank and a deep cooling brine pump;
a liquid ammonia outlet of the ammonia tank is connected with a liquid ammonia inlet of the distribution cylinder, the distribution cylinder is respectively connected with a liquid ammonia inlet of the shallow cooling heat exchanger and a liquid ammonia inlet of the cryogenic heat exchanger through two liquid ammonia pipelines, a gas ammonia outlet of the shallow cooling heat exchanger is connected with an inlet of the shallow cooling compressor through a shallow cold gas ammonia pipe, a gas ammonia outlet of the cryogenic heat exchanger is connected with an inlet of the cryogenic compressor through a cryogenic gas ammonia pipe, a series pipeline for communicating the shallow cold gas ammonia pipe and the cryogenic gas ammonia pipe is arranged between the shallow cold gas ammonia pipe and the cryogenic gas ammonia pipe, an outlet pipeline of the shallow cooling compressor and an outlet pipeline of the cryogenic compressor are combined and then connected with a gas phase inlet of the evaporative condenser, and a liquid phase outlet of the evaporative condenser is connected with the liquid ammonia inlet of the ammonia tank;
the shallow cooling brine tank is connected with a brine inlet of the shallow cooling heat exchanger through a shallow cooling brine pump, a brine outlet of the shallow cooling heat exchanger is led out to the production area, the deep cooling brine tank is connected with a brine inlet of the deep cooling heat exchanger through a deep cooling brine pump, and a brine outlet of the deep cooling heat exchanger is led out to the production area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211461733.6A CN115727559B (en) | 2022-11-17 | 2022-11-17 | Combined type refrigerating ice machine for diketene production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211461733.6A CN115727559B (en) | 2022-11-17 | 2022-11-17 | Combined type refrigerating ice machine for diketene production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115727559A true CN115727559A (en) | 2023-03-03 |
| CN115727559B CN115727559B (en) | 2024-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211461733.6A Active CN115727559B (en) | 2022-11-17 | 2022-11-17 | Combined type refrigerating ice machine for diketene production |
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2022
- 2022-11-17 CN CN202211461733.6A patent/CN115727559B/en active Active
Patent Citations (13)
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| JP2005030622A (en) * | 2003-07-07 | 2005-02-03 | Mayekawa Mfg Co Ltd | Ice cream freezer |
| JP2008157481A (en) * | 2006-12-20 | 2008-07-10 | Mayekawa Mfg Co Ltd | Cooling equipment and its remodeling method |
| CN101220810A (en) * | 2007-01-09 | 2008-07-16 | 葛建民 | Control method for compressor of air source heat pump hot water machine unit |
| JP2009092271A (en) * | 2007-10-04 | 2009-04-30 | Orion Mach Co Ltd | Precision temperature adjusting device |
| KR20120060433A (en) * | 2010-12-02 | 2012-06-12 | 이병문 | Circulating type producing system using deep water |
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| CN103322712A (en) * | 2013-06-17 | 2013-09-25 | 江苏科立德制冷设备有限公司 | Parallel compression refrigeration system |
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| CN115727559B (en) | 2024-01-26 |
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