CN104034090A - Circulating ammonia waste heat utilization system - Google Patents
Circulating ammonia waste heat utilization system Download PDFInfo
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- CN104034090A CN104034090A CN201410290528.7A CN201410290528A CN104034090A CN 104034090 A CN104034090 A CN 104034090A CN 201410290528 A CN201410290528 A CN 201410290528A CN 104034090 A CN104034090 A CN 104034090A
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention discloses a circulating ammonia waste heat utilization system and provides a novel method to recycle circulating ammonia waste heat through one type of heat pump units taking soft circulating water as a heat carrier. The circulating ammonia waste heat utilization system is characterized in that a branch circuit connected with a shell side heat exchanging channel of a heat exchanger is led from a pipeline between a circulating ammonia pump and a coke oven, a circulating circuit for ammonia circulating is formed among the coke oven, a circulating ammonia groove, the circulating ammonia pump and the heat exchanger, and the circulating ammonia with the temperature ranging from 75 DEG C to 78 DEG C is pumped out from the circulating ammonia groove through the circulating ammonia pump to be lowered in temperature ranging from 70 DEG C to 73 DEG C after heat exchanging via the heat exchanger. Waste heat water changes heat with the circulating ammonia, and the heated waste heat water is switched through a valve to enter different parts of a unit, so that switching of refrigerating and heating can be switched; for refrigeration, the low-temperature water produced can be used for meeting requirements of freeze water on coking production; for heating, pure heated water is heated to be deoxygenated water used for water supply for coking drying quenching cokes and for a waste heat boiler recovering waste heat of flue gas of a coke oven..
Description
Technical field
The invention provides a kind of coking industry cyclic ammonia water ammoniacal liquor bootstrap system that is widely used in, belong to UTILIZATION OF VESIDUAL HEAT IN field, by the improvement to existing coking system, by introducing source pump, the energy wherein containing is reclaimed and utilized, specifically a kind of cyclic ammonia water bootstrap system.
Background technology
In process of coking, the raw gas temperature of overflowing through tedge from coke furnace carbonization chamber is 650～750 ℃, the cyclic ammonia water that need to be 147～196KPa by gauge pressure in bridge tube and discharge sprays, when the ammoniacal liquor of fine mist fully contacts with coal gas, ammonia absorption crude-gas sensible heat partly evaporates and enters in coal gas, gas temperature is sharply down to 80～85 ℃, enters primary cooler and is cooled to 21 ℃.It is cooling that the cyclic ammonia water of evaporation and coal gas are mixed into primary cooler, and in cooling procedure, the water vapour in coal gas, ammonia, tar, naphthalene etc. are condensed and cool down, and forms condensate liquid.Condensate liquid is static separation in tar ammonia water separator or mechanical settling tank, obtains ammoniacal liquor, and temperature is generally 75～78 ℃, and for 75～78 ℃ of ammoniacal liquor wherein, major part is used for circulating and sprays cooling coke-stove gas, and internal circulating load is about 6m
3/ t dry coal, is called cyclic ammonia water; A small amount of is very unmanageable remained ammonia, need after dephenolize, ammonia still process, biochemical treatment, recycle or discharge.General cyclic ammonia water temperature should be higher than 5～10 ℃ of discharge dew point of gas, when loading coal moisture is 8%～11% time, corresponding dew point of gas temperature is 65～70 ℃, be that cyclic ammonia water temperature also can meet and spray cooling coal gas requirement at 70～75 ℃, therefore the cyclic ammonia water of 75～78 ℃ is used further to circulating cooling coal gas after can utilizing 3～7 ℃ of temperature difference.For the coke-oven plant of 1,200,000 tons, cyclic ammonia water amount is generally at 1000～1200m
3/ h, utilizes 5 ℃ of temperature difference, can obtain the heat of 5,500,000 kcal/h.Simultaneously, coking is as Chemical Manufacture enterprise, in process of production, various media need frequent heating and cooling, need to take steam, coal gas is thermal source, and in needing, warm water and chilled water are heat transferring medium, and whole technical process need to consume a large amount of energy, as the deaerated water production process of dry coke quenching or flue gas UTILIZATION OF VESIDUAL HEAT IN need to consume steam, refrigeration machine need to consume coal gas or steam.On the one hand, a large amount of waste heats are not utilized, and need again to consume a large amount of energy medium on the one hand, do not meet the developing direction of coking industry energy-saving and emission-reduction, low-carbon green.Therefore, how by recycling for 75～78 ℃ of ammoniacal liquor energy wherein, be applied in other techniques, the interior Cycling And Utilizing Patterns of forming energy, is a research direction of present patent application.
At present, at coking industry, developed cyclic ammonia water Technique of Utilizing Waste Heat For Refrigeration, but only for summer; In addition, in the north also by after cyclic ammonia water waste heat and heating water heat exchange for heating, only limit to winter, can not realize the comprehensive utilization of annual cyclic ammonia water waste heat, that is to say that lacking one is enclosed within summer and winter spendable technology all.
Based on above-mentioned discussion, what the present invention studied is a kind of cyclic ammonia water waste heat comprehensive utilization system, summer recyclable primary cooler waste heat be used for producing chilled water, in non-refrigeration season, with heat pump, reclaiming cyclic ammonia water waste-heat pure water is to 105 ℃, conventionally adopting steam-heated mode to heat to obtain to pure water can be for dry coke quenching or flue-gas waste-heat boiler water, reduced the energy input of refrigeration machine or oxygen-eliminating device, reduce high-quality steam or gas consumption, thereby reduced process energy consumption.
Summary of the invention
For above-mentioned situation, the present invention aims to provide a kind of cyclic ammonia water bootstrap system, that double-effect heat pump unit dual-purpose by steam, cold, hot two-purpose is recycled cyclic ammonia water waste heat, and layout of beam line reasonable in design, produce following effect: in summer, utilize cyclic ammonia water waste heat by source pump production water at low temperature, as cokingization, produce system chilled water; In the winter time, use this source pump to reclaim cyclic ammonia water waste-heat boiler pure water, improve demineralized water and enter oxygen-eliminating device temperature, thereby reduce oxygen-eliminating device steam consumption.
For achieving the above object, the method for the invention is solved by following technical scheme:
A kind of cyclic ammonia water waste heat recycling system, comprise coke oven, cyclic ammonia water pump, heat exchanger, softened water pump, double-effect heat pump unit, pure water pump, pure water groove, oxygen-eliminating device, cooling rack, cooling water pump and pipeline and some valves, between described coke oven, oil-circulating ammonia water tank and cyclic ammonia water pump, by pipeline and by-pass valve control, form the passage that ammonia circulation is used, in described double-effect heat pump unit, there is the first high temperature heat-exchange device and the second Low Temperature Thermal switch, it is characterized in that
On the pipeline between cyclic ammonia water pump and coke oven, draw a tube loop being connected with the shell side heat exchanger channels of described heat exchanger, between described coke oven, oil-circulating ammonia water tank, cyclic ammonia water pump and heat exchanger, form the closed circuit of cyclic ammonia water, and the cyclic ammonia water of 75～78 ℃ is reduced to 70～73 ℃ by cyclic ammonia water pump from oil-circulating ammonia water tank extraction temperature after heat exchanger heat exchange;
The external circulation softened water pump of tube side heat exchanger channels of described heat exchanger, and
When needs freeze,
Described circulation soft water delivery side of pump is accessed the low-temperature end (generator end) of the first high temperature heat-exchange device and formed soft water closed circuit between heat exchanger and the first high temperature heat-exchange device by pipeline and valve, and the soft water temperature that circulates after heat exchanger heat exchange can be increased to 70 ℃; Low-temperature end (evaporator end) at the second Low Temperature Thermal switch connects cold water user side, and forms cold water closed circuit by low temperature water pump and pipeline, the cold water of 23 ℃ can be prepared into the cold water of 16 ℃, and to cold water user side supply cold water; The pipeline of the first high temperature heat-exchange device and the second Low Temperature Thermal switch connects and passes through external cooling rack and cooling water pump formation cooling water circulation loop;
When needs heat,
Described circulation soft water delivery side of pump is accessed the low-temperature end (evaporator end) of the second Low Temperature Thermal switch and formed soft water closed circuit between heat exchanger and the second Low Temperature Thermal switch by pipeline and valve, and the soft water temperature that circulates after heat exchanger heat exchange can be increased to 70 ℃; Low-temperature end in the first high temperature heat-exchange device (generator end) access jet chimney also provides auxiliary heat energy by steam; The pipeline of the first high temperature heat-exchange device and the second Low Temperature Thermal switch connects and is connected external for supplementing the pure water pump of pure water and for the pure water after heating being assisted to the oxygen-eliminating device of deoxygenation, described oxygen-eliminating device is connected with deaerated water watering equipment;
And refrigeration and heat between only can select one and carry out work and carry out switching controls by valve.
Described deaerated water watering equipment is boiler.
Described cold water user side is that cokingization is produced the equipment that needs chilled water in operation.
Described double-effect heat pump unit is first-class absorption type heat pump unit.
Between each above-mentioned assembly, initial cyclic ammonia water leads to heat exchanger from cyclic ammonia water pump discharge, wherein, by the heat exchange action between shell side and tube side, heat in circulation soft water absorption cycle ammoniacal liquor, by the cyclic ammonia water temperature after heat, according to circumstances reduce by 3～7 ℃, then return to former cyclic ammonia water pipeline and recycle.Cyclic ammonia water flows to and controls by one group of valve, can realize and adjusts or switch according to unit operation.Simultaneously, circulation soft water temperature is increased to 70 ℃ up and down, through circulation softened water pump, pressurize, enter source pump, and the generator and the evaporimeter that connect respectively double-effect heat pump unit simultaneously, by valve, switch and can move towards by controlled circulation soft water as required, and be merely able to supply soft water in a pipeline simultaneously, realize two kinds of situations: a kind of is that circulating hot water after summer heating enters the generator in double-effect heat pump unit, with thermal cycle soft water, drive double-effect heat pump unit to produce 16～18 ℃ of chilled waters, for cokingization, produce the chilled water of operation; A kind of is in non-refrigeration season, by the evaporimeter of the circulating hot water access double-effect heat pump unit after heating, with thermal cycle soft water drive train heating pure water, and to be aided with steam be thermal source, produce deaerated water, for coking dry coke quenching or flue gases of cock oven heat recovery boiler water.Circulation soft water temperature after unit reduces, and Returning heat-exchanger, after cyclic ammonia water heat exchange, recycles after the pressurization of circulation softened water pump.
Described double-effect heat pump unit is first-class absorption type heat pump unit, comprises evaporimeter, absorber, condenser, generator, spray pump, solution pump and solution heat exchanger, is prior art equipment.When as refrigerating function, absorber and condenser are connected with cooling water system, and evaporimeter is connected with low temperature water system, and thermal cycle soft water enters generator as drive energy.When as heat-production functions, high temperature thermal cycle hot water is connected with unit evaporimeter, and absorber is connected with boiler pure water system with condenser, and generator access steam is thermal source as a supplement.Unit is when realizing refrigeration with heat-production functions conversion, and unit can be by valve sets transfer medium in parallel.
The invention has the beneficial effects as follows:
(I) be take and circulated soft water as carrier, reclaim cyclic ammonia water waste heat, be used for driving source pump, both can produce 16～18 ℃ of chilled waters, reduce steam or gas consumption, also can heat pure water to 105 ℃, produce deaerated water, for dry coke quenching or smoke and waste steam boiler, supply water, reduce former oxygen-eliminating device steam consumption, realized the recycling of cyclic ammonia water waste heat.
(II) produces deaerated water with native system heating pure water, and coking dry coke quenching operation oxygen-eliminating device, as standby, has improved the production supportability of dry coke quenching;
(III) this residual-heat utilization method is flexible and changeable, both can not only freeze but also heat, and also can adopt separately as required refrigeration or heat-production functions, and conversion only needs the keying of by-pass valve control can realize switching, and controllability is good and simply;
(IV), by UTILIZATION OF VESIDUAL HEAT IN, coal gas is set up new equalized temperature at discharge, has reduced primary cooler and produce load on certain procedures;
(V) this technology only need connect heat exchanger at cyclic ammonia water pipeline, and the pipeline modification of the line correlation of going forward side by side, does not affect coke oven cyclic ammonia water sprinkling system structure, can implement easily.
(VI) this technology supplies water for waste heat boiler, only pure water need be caused to unit, turns back to former oxygen-eliminating device after heating, does not affect waste heat boiler water system, and oxygen-eliminating device can be used as standbyly, has improved dry coke quenching and has produced and ensure.
(VII) this technology is applicable to all coal chemical enterprises, and popularizing application prospect is wide.
Accompanying drawing explanation
Fig. 1 is the annexation schematic diagram of cyclic ammonia water bootstrap system;
Fig. 2 is the unlatching schematic diagram of cyclic ammonia water utilizing waste heat for refrigeration pipeline;
Fig. 3 is the unlatching schematic diagram that cyclic ammonia water waste heat heats pipeline;
Fig. 4 is cyclic ammonia water utilizing waste heat for refrigeration schematic diagram;
Fig. 5 is that cyclic ammonia water waste heat heats schematic diagram;
The specific embodiment
A kind of cyclic ammonia water bootstrap system, comprise cyclic ammonia water pump, heat exchanger, softened water pump, double-effect heat pump unit, pure water pump, pure water groove, feed pump, oxygen-eliminating device, waste heat boiler, cooling rack, cooling water pump and pipeline and some valves, annexation as shown in Figure 1.
The cyclic ammonia water of 75～78 ℃ is extracted out from oil-circulating ammonia water tank by cyclic ammonia water pump, from the open front of pump discharge valve, cyclic ammonia water is led to cyclic ammonia water-circulation soft water heat exchanger, transfer heat to after circulation soft water, temperature is reduced to 70～73 ℃ and from pump discharge valve, returns to former cyclic ammonia water pipeline, is sent to coke oven tedge and sprays cooling coal gas use.After circulation soft water absorption cycle ammoniacal liquor heat, temperature is increased to 70 ℃ of left and right, through the pressurization of circulation softened water pump, is sent to source pump.
Source pump is prior art, and heat pump has the system that generator, condenser, evaporimeter, absorber, spray pump, solution pump, vavuum pump, solution heat exchanger etc. form a sealing, wherein:
The heat supply end of generator connects respectively the soft water and steam of high temperature circulation, and by one group of valve, realizes the switching of thermal source, and generator gas phase is connected to condenser by pipeline, and solution is connected to absorber by pipeline through solution heat exchanger.
The release end of heat of absorber and condenser is connected respectively cooling water and pure water, and by one group of valve, realizes the switching of cooling medium.
Condenser is connected with the gas phase of generator by pipeline, and condensate liquid is connected to evaporimeter by pipeline.
The release end of heat of evaporimeter is connected with water at low temperature, high temperature circulation soft water respectively, and by one group of valve, realizes the switching of two media; Gas phase is by pipeline communication to absorber, and the self-loopa that liquid phase realizes cryogen by spray pump is sprayed.
The weak solution of absorber is pumped out by solution, after solution heat exchanger, is connected by pipeline with generator; With and the concentrated solution of generator pass through pipeline communication.
Vavuum pump is connected with generator with evaporimeter respectively by pipeline, and when guaranteeing in work, work in two Room under vacuum state.
The course of work of this system is such:
As shown in Figure 2 and Figure 4, refrigeration: by with cyclic ammonia water heat exchange after high temperature circulation soft water directly introduce the generator of unit, drive train is produced chilled water, for cokingization, produces system cools water.Technical process is: cyclic ammonia water is caused to heat exchanger from cyclic ammonia water pump discharge, and with the heat exchange of circulation soft water, the cyclic ammonia water temperature after heat release reduces, and returns to former cyclic ammonia water pipeline, delivers to coke oven and sprays cooling raw coke oven gas use; Circulation soft water temperature after heat absorption raises, and causes source pump, and drive train is made the water at low temperature of 16 ℃, and being sent to of water at low temperature produced after system cools medium, and temperature raises, and returns to unit recycle through low temperature water pump pressurization.After circulation soft water goes out unit, temperature reduces, and after Returning heat-exchanger circulating-heating, then recycles after the pressurization of circulation soft water.For realizing energy balance, at the absorber end of unit, be connected with the recirculated cooling water from cooling water pump, recirculated cooling water is entered after unit condenser by absorber, and temperature raises, and returns to cooling rack, after circulating cooling, recycles after cooling water pump pressurization again.Energy transfer process is: cyclic ammonia water transfers heat to circulation soft water by heat exchanger, high temperature circulation soft water transfers the energy to water at low temperature by double-effect heat pump unit, water at low temperature for cokingization produce system coolant media by heat loss in system, realized the recycling of waste heat.
As shown in Figure 3 and Figure 5, heat: by with cyclic ammonia water heat exchange after high temperature circulation soft water directly introduce the evaporimeter of unit, drive train heating pure water, being aided with steam again and being thermal source is heated to 105 ℃ by pure water and becomes deaerated water and send into oxygen-eliminating device, with feed pump, deaerated water is drawn water again, deliver to boiler and produce steam use.Technical process is: cyclic ammonia water is caused to heat exchanger from cyclic ammonia water pump discharge, and with the heat exchange of circulation soft water, the cyclic ammonia water temperature after heat release reduces, and returns to former cyclic ammonia water pipeline, delivers to coke oven and sprays cooling raw coke oven gas use; Circulation soft water temperature after heat absorption raises, and causes source pump, at unit generator, introduces steam source, the pure water to 105 ℃ that common drive train heating is sent here by pure water pump, enters oxygen-eliminating device after becoming deaerated water, obtains deaerated water, by feed pump, deliver to boiler again, for generation of steam.After circulation soft water goes out unit, temperature reduces, and after Returning heat-exchanger circulating-heating, then recycles after the pressurization of circulation soft water.Energy transfer process is: cyclic ammonia water transfers heat to circulation soft water by heat exchanger, and the soft water and steam of high temperature circulation transfers the energy to deaerated water by unit, has realized the recycling of waste heat.
The refrigeration principle of double-effect heat pump unit:
At generator, the vaporization of the heat of the water as refrigerant absorption cycle soft water in weak solution enters condenser, in weak solution, after moisture evaporation, becomes concentrated solution, after heat exchanger and the weak solution heat exchange from absorber, enters absorber; At condenser, cooling by cooling water condensation mobile in heat exchanger tube from the refrigerant vapour of generator, enter evaporimeter after becoming water as refrigerant; At evaporimeter, under vacuum state, water as refrigerant is the heat of mobile chilled water vaporization in absorption heat-exchange pipe under low-temperature condition, enters absorber, and after the chilled water heat release in heat exchanger tube, temperature reduces, and has made 16 ℃ of chilled waters, as system cools medium; At absorber, come the refrigerant vapour of flash-pot to be absorbed by the concentrated solution from generator, by gas phase, become liquid phase, solution becomes weak solution by concentrated solution, after solution pump is extracted out, enter generator again after heat exchanger and the concentrated solution heat exchange from generator, in Condensation, liberated heat is taken away by recirculated cooling water.
Double-effect heat pump unit heat principle:
At evaporimeter, from condenser water as refrigerant, absorb high temperature circulation soft water heat and evaporate formation refrigerant vapour, refrigerant vapour enters absorber, and after the heat release of circulation soft water, temperature reduces unit and recycle; At absorber, come flash-pot refrigerant vapour to be absorbed by the concentrated solution from generator, steam becomes liquid phase by gas phase, liberated heat is by absorbing pure water mobile in heat exchanger tube, pure water temperature raises and enters condenser, concentrated solution becomes weak solution after absorbing refrigerant vapour, through solution pump, extracts out and connects after exchange through heat exchanger and the concentrated solution from generator, enters generator; At generator, from the water as refrigerant in the weak solution of absorber, absorb the heat of steam and be vaporizated into refrigerant vapour, refrigerant vapour enters condenser, after cryogen evaporation, solution is thickened by rare, and concentrated solution enters absorber after heat exchanger and the weak solution heat exchange from absorber; At condenser, the refrigerant vapour condensation from generator, discharges a large amount of heat, by the absorbing pure water from absorber flowing in heat exchanger tube, pure water temperature is further increased to 105 ℃ and go out unit, and steam-condensation becomes water as refrigerant, enter evaporimeter, complete a circulation.
The invention provides is a kind ofly by a class source pump, to produce the technology that chilled water or deaerated water are recycled cyclic ammonia water waste heat, be the soft water that circulates be carrier, reclaim cyclic ammonia water waste heat, again with the high temperature circulation soft water drive train after heating, produce chilled water or deaerated water, thereby realize the utilization of cyclic ammonia water waste heat.In summer, use with cyclic ammonia water heat exchange after high temperature soft water drive train produce 16 ℃ of water at low temperature, for cokingization, produce the chilled water of system; In non-refrigeration season, use with cyclic ammonia water heat exchange after high temperature soft water drive train heating pure water, and to be aided with steam be thermal source, and pure water is heated to 105 ℃, produces deaerated water, as boiler feedwater.This technology has realized the recycling of cyclic ammonia water waste heat, in summer, reduced the energy input of refrigeration machine, in non-refrigeration season, reduced oxygen-eliminating device steam consumption, the step of having realized coking industry energy recycles, reduced the input of coking process energy, be energy-conserving and emission-cutting technology, have higher economic benefit and social benefit, popularizing application prospect is wide.
Except the technical characterictic described in description, be the known technology of those skilled in the art.
Claims (4)
1. a cyclic ammonia water bootstrap system, comprise coke oven, cyclic ammonia water pump, heat exchanger, softened water pump, double-effect heat pump unit, pure water pump, pure water groove, oxygen-eliminating device, cooling rack, cooling water pump and pipeline and some valves, between described coke oven, oil-circulating ammonia water tank and cyclic ammonia water pump, by pipeline and by-pass valve control, form the passage that ammonia circulation is used, in described double-effect heat pump unit, there is the first high temperature heat-exchange device and the second Low Temperature Thermal switch, it is characterized in that
On the pipeline between cyclic ammonia water pump and coke oven, draw a tube loop being connected with the shell side heat exchanger channels of described heat exchanger, between described coke oven, oil-circulating ammonia water tank, cyclic ammonia water pump and heat exchanger, form the closed circuit of cyclic ammonia water, and the cyclic ammonia water of 75～78 ℃ is reduced to 70～73 ℃ by cyclic ammonia water pump from oil-circulating ammonia water tank extraction temperature after heat exchanger heat exchange;
The external circulation softened water pump of tube side heat exchanger channels of described heat exchanger, and
When needs freeze,
Described circulation soft water delivery side of pump is accessed the low-temperature end (generator end) of the first high temperature heat-exchange device and formed soft water closed circuit between heat exchanger and the first high temperature heat-exchange device by pipeline and valve, and the soft water temperature that circulates after heat exchanger heat exchange can be increased to 70 ℃; Low-temperature end (evaporator end) at the second Low Temperature Thermal switch connects cold water user side, and forms cold water closed circuit by low temperature water pump and pipeline, the cold water of 23 ℃ can be prepared into the cold water of 16 ℃, and to cold water user side supply cold water; The pipeline of the first high temperature heat-exchange device and the second Low Temperature Thermal switch connects and passes through external cooling rack and cooling water pump formation cooling water circulation loop;
When needs heat,
Described circulation soft water delivery side of pump is accessed the low-temperature end of the second Low Temperature Thermal switch and formed soft water closed circuit between heat exchanger and the second Low Temperature Thermal switch by pipeline and valve, and the soft water temperature that circulates after heat exchanger heat exchange can be increased to 70 ℃; Low-temperature end access jet chimney in the first high temperature heat-exchange device also provides auxiliary heat energy by steam; The pipeline of the first high temperature heat-exchange device and the second Low Temperature Thermal switch connects and is connected external for supplementing the pure water pump of pure water and for the pure water after heating being assisted to the oxygen-eliminating device of deoxygenation, described oxygen-eliminating device is connected with deaerated water watering equipment;
And refrigeration and heat between only can select one and carry out work and carry out switching controls by valve.
2. a kind of cyclic ammonia water bootstrap system according to claim 1, is characterized in that, described deaerated water watering equipment is boiler.
3. a kind of cyclic ammonia water bootstrap system according to claim 1, is characterized in that, described cold water user side is that cokingization is produced the equipment that needs chilled water in operation.
4. a kind of cyclic ammonia water bootstrap system according to claim 1, is characterized in that, described double-effect heat pump unit is first-class absorption type heat pump unit.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105042746A (en) * | 2015-08-18 | 2015-11-11 | 周屹 | Pure water cooling and heating heat pump of air conditioner |
| CN108609790A (en) * | 2018-05-07 | 2018-10-02 | 山东焦点生物科技股份有限公司 | A kind of water circulation system of Sodium Hyaluronate clean manufacturing |
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| JPS54107904A (en) * | 1978-02-10 | 1979-08-24 | Kawasaki Heavy Ind Ltd | Recovery of hot ammonia liquor waste heat |
| JPS57102992A (en) * | 1980-12-19 | 1982-06-26 | Nippon Steel Corp | Heat recovery from coke oven gas |
| CN102778143A (en) * | 2012-07-04 | 2012-11-14 | 黑龙江建龙钢铁有限公司 | Circulating ammonia water waste heat utilizing system |
| CN102827623A (en) * | 2012-09-07 | 2012-12-19 | 云南大为制焦有限公司 | Method and system for recycling waste heat of ammonia water |
| CN102911679A (en) * | 2012-11-13 | 2013-02-06 | 济钢集团有限公司 | Coke oven gas primary cooler waste heat recycling system |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54107904A (en) * | 1978-02-10 | 1979-08-24 | Kawasaki Heavy Ind Ltd | Recovery of hot ammonia liquor waste heat |
| JPS57102992A (en) * | 1980-12-19 | 1982-06-26 | Nippon Steel Corp | Heat recovery from coke oven gas |
| CN102778143A (en) * | 2012-07-04 | 2012-11-14 | 黑龙江建龙钢铁有限公司 | Circulating ammonia water waste heat utilizing system |
| CN102827623A (en) * | 2012-09-07 | 2012-12-19 | 云南大为制焦有限公司 | Method and system for recycling waste heat of ammonia water |
| CN102911679A (en) * | 2012-11-13 | 2013-02-06 | 济钢集团有限公司 | Coke oven gas primary cooler waste heat recycling system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105042746A (en) * | 2015-08-18 | 2015-11-11 | 周屹 | Pure water cooling and heating heat pump of air conditioner |
| CN105042746B (en) * | 2015-08-18 | 2017-10-17 | 周屹 | Pure water is cold, warm air conditioner heat pump |
| CN108609790A (en) * | 2018-05-07 | 2018-10-02 | 山东焦点生物科技股份有限公司 | A kind of water circulation system of Sodium Hyaluronate clean manufacturing |
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Application publication date: 20140910 |