CN102748893A - PVC (polyvinyl chloride) system waste heat continuous refrigeration method and PVC system waste heat driven lithium bromide ice unit - Google Patents
PVC (polyvinyl chloride) system waste heat continuous refrigeration method and PVC system waste heat driven lithium bromide ice unit Download PDFInfo
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- CN102748893A CN102748893A CN2012102085611A CN201210208561A CN102748893A CN 102748893 A CN102748893 A CN 102748893A CN 2012102085611 A CN2012102085611 A CN 2012102085611A CN 201210208561 A CN201210208561 A CN 201210208561A CN 102748893 A CN102748893 A CN 102748893A
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- generator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
- Y02B30/625—Absorption based systems combined with heat or power generation [CHP], e.g. trigeneration
Abstract
The invention relates to a PVC (polyvinyl chloride) system waste heat driven lithium bromide ice unit, which comprises an evaporator, an absorber, a generator, a condenser and a heat exchanger. A method for refrigeration by using the unit comprises the steps that cold water coming from an external system flows through heat exchange tubes of the evaporator, low-temperature refrigerant water which is sprayed on the external parts of the heat exchange tubes is evaporated to absorb heat and the refrigerant water is gasified into water vapor and enters the absorber; then lithium bromide concentrated solution is sprayed at the external parts of heat exchange tubes of the absorber to absorb the water vapor produced in the evaporator, the solution is diluted and the diluted solution exchanges heat with the heat exchange tubes to increase temperature and then enters the generator; steam is supplied outside the generator to heat and concentrate the solution into concentrated solution and the water vapor enters the condenser; the water vapor outside the heat exchange tubes of the condenser is condensed into water which enters into the evaporator through cooling water in the heat exchange tubes of the condenser; and finally the concentrated solution coming from the generator and the diluted solution coming from the absorber exchange heat. The unit and the method provided by the invention have the advantages that the low-pressure steam is recovered, the low-temperature refrigerant water can be produced and is supplied to a conversion section for cooling and dewatering and the economic benefits are greatly improved.
Description
Technical field
The present invention relates to a kind of PVC system's used heat continuous cooling method and drive lithium bromide ice maker group.
Background technology
Qinghai should chemical industry Co., Ltd be produced 300000 tons of PVC, 300,000 tons of caustic soda, 400,000 tons of calcium carbide production lines per year and is split into operation in March, 2011; Adopt carbide to produce acetylene and produce hydrogen chloride with ionic membrane system alkaline process, acetylene and hydrogen chloride through mixed freezing dehydration, conversion, alkali cleaning, compression, condensation, make with extra care and obtain making with extra care vinyl chloride.Transform in the synthesizing chloroethylene process at acetylene and hydrogen chloride, need 7 ℃ of cold water acetylene and chlorine hydride mixed gas cooling dehydration.Transform the recirculated water demand 3500m3/h of 7 ℃ of cold water of workshop section at present; Refrigeration duty is about 1400KW; (freon ice maker model is W-LG31.5IIIF1000 to adopt 4 freon ice makers earlier; Motor 1000KW, refrigerating capacity Q=3820KW) 7 ℃ of cold water of preparation provide cold, and the power consumption of freon ice maker system is higher.By-product low-pressure steam in the hydrogen chloride of ionic membrane system alkaline process production at present (0.3MPa, 130 ℃) supplies operating room heating winter, the direct emptying of other times, and value is low.
Summary of the invention
In order to overcome the deficiency of above-mentioned prior art, the object of the present invention is to provide a kind of PVC system's used heat continuous cooling method and drive lithium bromide ice maker group, effective, cost is low.
To achieve these goals, the technical scheme of the present invention's employing is:
A kind of PVC system used heat drives lithium bromide ice maker group, comprising:
Evaporimeter: inlet connects the external system cold water pipe, and outlet connects absorber;
Absorber: inlet connects evaporimeter, absorber heat exchanging pipe peripheral hardware bromize lithium concentrated solution spray equipment, and the absorber heat exchanging pipe connects cooling tower, and outlet connects generator behind interchanger;
Generator: inlet connects absorber, provides steam that solution is heated, and steam gets into condenser;
Condenser: inlet connects generator, and the condenser heat exchanger tube connects cooling tower, the water vapor condensation Cheng Shui that pipe is outer, and condensed water is in the U-shaped pipe gets into the evaporimeter upper groove;
Heat exchanger: concentrated solution and the next weak solution of absorber that generator comes are carried out heat exchange, weak solution is heated up, reclaim the concentrated solution heat.
The present invention also provides a kind of PVC system used heat continuous cooling method, comprises the steps:
Step 1 will be from 12 ℃ of cold water that external system is come evaporimeter heat exchanger tube of flowing through, and 12 ℃ of cold water are drenched to swash in the outer cryogenic coolant water evaporation of pipe to absorb heat; Returning to external system after temperature is downgraded to 7 ℃; Water as refrigerant has obtained the heat of external system, is gasificated into steam, gets into absorber;
Step 2; The bromize lithium concentrated solution pouring is swashed outside the absorber heat exchanging pipe, absorb the water vapour that produces in the evaporimeter, concentration is thinning;, absorber takes away the heat that the solution absorption water vapour produces in changing to pipe from the cooling water flow that cooling tower comes; Solution after thinning collects in and absorbs its bottom, is extracted out by solution pump, after the heat exchanger heat exchange heats up, gets into generator;
Step 3, generator supply steam that solution is heated outward, produce a large amount of water vapours, and solution concentration becomes concentrated solution simultaneously, and steam gets into condenser;
Step 4, in the condenser heat exchanger tube, with the water vapor condensation Cheng Shui outside the pipe, condensed water is in the U-shaped pipe gets into the evaporimeter upper groove with cooling water;
Step 5 is carried out heat exchange with concentrated solution and the next weak solution of absorber that generator comes, and weak solution is heated up, and reclaims the concentrated solution heat.
Above five step cycle are carried out repeatedly, form the technical process of continuous cooling.
Compared with prior art, the present invention reclaims low-pressure steam, and delivers to the lithium bromide refrigerating unit and produce the low temperature chilled water about 7 ℃, supplies to transform workshop section's cooling dehydration, has significantly improved economic benefit.
The specific embodiment
Below in conjunction with embodiment the present invention is explained further details.
A kind of PVC system used heat drives lithium bromide ice maker group, comprising:
Evaporimeter: inlet connects the external system cold water pipe, and outlet connects absorber;
Absorber: inlet connects evaporimeter, absorber heat exchanging pipe peripheral hardware bromize lithium concentrated solution spray equipment, and the absorber heat exchanging pipe connects cooling tower, and outlet connects generator behind interchanger;
Generator: inlet connects absorber, provides steam that solution is heated, and steam gets into condenser;
Condenser: inlet connects generator, and the condenser heat exchanger tube connects cooling tower, the water vapor condensation Cheng Shui that pipe is outer, and condensed water is in the U-shaped pipe gets into the evaporimeter upper groove;
Heat exchanger: concentrated solution and the next weak solution of absorber that generator comes are carried out heat exchange, weak solution is heated up, reclaim the concentrated solution heat.
The present invention also provides a kind of PVC system used heat continuous cooling method, comprises the steps:
Step 1 will be from 12 ℃ of cold water that external system is come evaporimeter heat exchanger tube of flowing through, and 12 ℃ of cold water are drenched to swash in the outer cryogenic coolant water evaporation of pipe to absorb heat; Returning to external system after temperature is downgraded to 7 ℃; Water as refrigerant has obtained the heat of external system, is gasificated into steam, gets into absorber;
Step 2; The bromize lithium concentrated solution pouring is swashed outside the absorber heat exchanging pipe, absorb the water vapour that produces in the evaporimeter, concentration is thinning;, absorber takes away the heat that the solution absorption water vapour produces in changing to pipe from the cooling water flow that cooling tower comes; Solution after thinning collects in and absorbs its bottom, is extracted out by solution pump, after the heat exchanger heat exchange heats up, gets into generator;
Step 3, generator supply steam that solution is heated outward, produce a large amount of water vapours, and solution concentration becomes concentrated solution simultaneously, and steam gets into condenser;
Step 4, in the condenser heat exchanger tube, with the water vapor condensation Cheng Shui outside the pipe, condensed water is in the U-shaped pipe gets into the evaporimeter upper groove with cooling water;
Step 5 is carried out heat exchange with concentrated solution and the next weak solution of absorber that generator comes, and weak solution is heated up, and reclaims the concentrated solution heat.
Above five step cycle are carried out repeatedly, form the technical process of continuous cooling.
Unit of the present invention be a kind of be driving heat source with steam; Lithium-bromide solution is an absorbent, water level cold-producing medium, the equipment of a taking technique or conditioned water; Be the assembly of several shell-and-tube heat exchangers, and guarantee to be in vacuum state in the unit always by air extractor and vavuum pump.
Claims (2)
1. a PVC system used heat drives lithium bromide ice maker group, it is characterized in that, comprising:
Evaporimeter: inlet connects the external system cold water pipe, and outlet connects absorber;
Absorber: inlet connects evaporimeter, absorber heat exchanging pipe peripheral hardware bromize lithium concentrated solution spray equipment, and the absorber heat exchanging pipe connects cooling tower, and outlet connects generator behind interchanger;
Generator: inlet connects absorber, provides steam that solution is heated, and steam gets into condenser;
Condenser: inlet connects generator, and the condenser heat exchanger tube connects cooling tower, the water vapor condensation Cheng Shui that pipe is outer, and condensed water is in the U-shaped pipe gets into the evaporimeter upper groove;
Heat exchanger: concentrated solution and the next weak solution of absorber that generator comes are carried out heat exchange, weak solution is heated up, reclaim the concentrated solution heat.
2. a PVC system used heat continuous cooling method is characterized in that, comprises the steps:
Step 1 will be from 12 ℃ of cold water that external system is come evaporimeter heat exchanger tube of flowing through, and 12 ℃ of cold water are drenched to swash in the outer cryogenic coolant water evaporation of pipe to absorb heat; Returning to external system after temperature is downgraded to 7 ℃; Water as refrigerant has obtained the heat of external system, is gasificated into steam, gets into absorber;
Step 2; The bromize lithium concentrated solution pouring is swashed outside the absorber heat exchanging pipe, absorb the water vapour that produces in the evaporimeter, concentration is thinning;, absorber takes away the heat that the solution absorption water vapour produces in changing to pipe from the cooling water flow that cooling tower comes; Solution after thinning collects in and absorbs its bottom, is extracted out by solution pump, after the heat exchanger heat exchange heats up, gets into generator;
Step 3, generator supply steam that solution is heated outward, produce a large amount of water vapours, and solution concentration becomes concentrated solution simultaneously, and steam gets into condenser;
Step 4, in the condenser heat exchanger tube, with the water vapor condensation Cheng Shui outside the pipe, condensed water is in the U-shaped pipe gets into the evaporimeter upper groove with cooling water;
Step 5 is carried out heat exchange with concentrated solution and the next weak solution of absorber that generator comes, and weak solution is heated up, and reclaims the concentrated solution heat;
Above five step cycle are carried out repeatedly, form the technical process of continuous cooling.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102085611A CN102748893A (en) | 2012-06-20 | 2012-06-20 | PVC (polyvinyl chloride) system waste heat continuous refrigeration method and PVC system waste heat driven lithium bromide ice unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102085611A CN102748893A (en) | 2012-06-20 | 2012-06-20 | PVC (polyvinyl chloride) system waste heat continuous refrigeration method and PVC system waste heat driven lithium bromide ice unit |
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| CN102748893A true CN102748893A (en) | 2012-10-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110762003A (en) * | 2019-10-17 | 2020-02-07 | 浙江迪贝电气股份有限公司 | Drying device for treating compressed air by utilizing waste heat of screw air compressor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4315411A (en) * | 1979-05-16 | 1982-02-16 | Tadiran Israel Electronics Industries Ltd. | Alcohol trap |
| CN1292332A (en) * | 1999-10-10 | 2001-04-25 | 应翀 | Lithium bromide absorption refrigerating equipment for car |
| CN2619212Y (en) * | 2003-04-21 | 2004-06-02 | 樊克俊 | Waste heat refrigerator of vehicle and ship engines |
| CN201028489Y (en) * | 2007-04-26 | 2008-02-27 | 青岛海晶化工集团有限公司 | Boiler used for waste heat recovery in synthesis of chloroethylene |
| WO2008069819A1 (en) * | 2006-12-08 | 2008-06-12 | Utc Power Corporation | Providing engine heat to an absorption chiller |
| CN201973953U (en) * | 2011-02-18 | 2011-09-14 | 王红斌 | Lithium bromide absorption-type cooling-water machine set adopting direct-cooling cold draft evaporator |
| CN102230686A (en) * | 2011-06-12 | 2011-11-02 | 浙江理工大学 | Lithium bromide absorption-compression type series boosting refrigeration/heating pump system |
-
2012
- 2012-06-20 CN CN2012102085611A patent/CN102748893A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4315411A (en) * | 1979-05-16 | 1982-02-16 | Tadiran Israel Electronics Industries Ltd. | Alcohol trap |
| CN1292332A (en) * | 1999-10-10 | 2001-04-25 | 应翀 | Lithium bromide absorption refrigerating equipment for car |
| CN2619212Y (en) * | 2003-04-21 | 2004-06-02 | 樊克俊 | Waste heat refrigerator of vehicle and ship engines |
| WO2008069819A1 (en) * | 2006-12-08 | 2008-06-12 | Utc Power Corporation | Providing engine heat to an absorption chiller |
| CN201028489Y (en) * | 2007-04-26 | 2008-02-27 | 青岛海晶化工集团有限公司 | Boiler used for waste heat recovery in synthesis of chloroethylene |
| CN201973953U (en) * | 2011-02-18 | 2011-09-14 | 王红斌 | Lithium bromide absorption-type cooling-water machine set adopting direct-cooling cold draft evaporator |
| CN102230686A (en) * | 2011-06-12 | 2011-11-02 | 浙江理工大学 | Lithium bromide absorption-compression type series boosting refrigeration/heating pump system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110762003A (en) * | 2019-10-17 | 2020-02-07 | 浙江迪贝电气股份有限公司 | Drying device for treating compressed air by utilizing waste heat of screw air compressor |
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Application publication date: 20121024 |