CN203768059U - Energy-saving system for preparing process cooling water by using coking distilled ammonia wastewater waste heat - Google Patents
Energy-saving system for preparing process cooling water by using coking distilled ammonia wastewater waste heat Download PDFInfo
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- CN203768059U CN203768059U CN201420143599.XU CN201420143599U CN203768059U CN 203768059 U CN203768059 U CN 203768059U CN 201420143599 U CN201420143599 U CN 201420143599U CN 203768059 U CN203768059 U CN 203768059U
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Abstract
The utility model relates an energy-saving system for preparing process cooling water by using coking distilled ammonia wastewater waste heat. The system comprises a wastewater pump and a refrigerating machine, a first inlet of a residual ammonia water heat exchanger is connected to a residual ammonia water tank; a second inlet of a residual ammonia water heat exchanger is connected to the liquid outlet end of the wastewater pump, wherein a second outlet of a residual ammonia water heat exchanger is connected to a first inlet of the first heat exchanger, a first outlet of the first heat exchanger is connected to a wastewater deep treatment device, the first inlet of the first heat exchanger is communicated with the first outlet of the first heat exchanger; the second outlet of the first heat exchanger is connected to the first medium inlet of a heat pump unit, the first medium outlet of the heat pump unit is connected to the second inlet of the first heat exchanger, the second inlet of the first heat exchanger is communicated with the second outlet of the first heat exchanger; the second medium outlet of the heat pump unit is connected to the medium inlet of the refrigerating machine and the medium backwater inlet of the refrigerating machine is connected to the second medium inlet of the heat pump unit. The distilled ammonia wastewater waste heat is recovered, and steam (or hot water) is generated by the heat pump and used as a heat source for driving the refrigerating machine so as to reduce the energy consumption.
Description
Technical field
The utility model relates to a kind of coking distilled ammonia wastewater UTILIZATION OF VESIDUAL HEAT IN technical field, specifically utilizes the energy conserving system of coking distilled ammonia wastewater waste heat reparation technology water coolant.
Background technology
The raw gas of overflowing through upcast from coke furnace carbonization chamber sprays cooling with cyclic ammonia water in bridge tube and effuser, in the time that the ammoniacal liquor of fine mist fully contacts with coal gas, the evaporation of ammonia absorption crude-gas sensible heat part enters in coal gas, gas temperature temperature is sharply down to 80～85 DEG C, enters primary cooler and is cooled to 21 DEG C.The cyclic ammonia water coal gas of evaporation in primary cooler process of cooling with coal gas in water vapor, ammonia, tar, naphthalene etc. be condensed and cool down, form phlegma.Phlegma is static separation in tar ammonia water separator or mechanical settling tank, obtain ammoniacal liquor, temperature is generally 75～78 DEG C, a part be used for circulating spray cooling coke-oven gas, another part is that remained ammonia is (in process of coking, the constitution water generating when having added coal blending moisture and coking, increases ammonia vol and has formed so-called remained ammonia) need to pass through oil removing, slagging-off, dephenolize, ammonia still process, biochemical depths reason and then reach reuse.To produce 2800000 tons, coke, approximately 60～80m of the remained ammonia of generation per year
3/ h.For reducing the volatilization ammonia of remained ammonia and the content of fixing ammonium, most coal chemical enterprises adopt the mode of ammonia still process to process remained ammonia, ammonia still process distilled ammonia wastewater temperature after treatment is 105 DEG C, the heat that waste water is taken away accounts for 60% of full tower total heat, by with enter after the heat exchange of ammonia still raw material remained ammonia, the temperature of distilled ammonia wastewater is also 80 DEG C of left and right, is then cooled to 38 DEG C by process cooling water and delivers to biochemical device after following and carry out advanced treatment, consumed a large amount of process cooling waters; And traditional process cooling water production technique need to consume the driving heat source of a large amount of coal gas (or steam) as the evaporation of refrigeration mechanism cryogen.Produce 2800000 tons, coke, approximately 60～80m of the remained ammonia of generation per year for one
3/ h, sends distilled ammonia wastewater waste heat production technique water coolant outside if can make full use of, and will greatly reduce the energy consumption of system.In addition country is more and more higher to environmental requirement, how to excavate and makes full use of the inherent expended energy of system and reduce new energy consumption and be also more and more taken seriously.
Utility model content
The shortcoming existing in order to overcome above-mentioned prior art, the purpose of this utility model is to provide a kind of energy conserving system that utilizes coking distilled ammonia wastewater waste heat reparation technology water coolant, to reclaim distilled ammonia wastewater waste heat taking circulating hot water as thermal barrier body, and pass through generating steam with heat pump (or hot water) as refrigerator driving heat source, recycle waste heat, reduced the consumptions of ammonia steaming system cooling-water consumption and refrigerator coal gas (or steam).
In order to address the above problem, the utility model is by the following technical solutions: the energy conserving system that utilizes coking distilled ammonia wastewater waste heat reparation technology water coolant, comprise the waste water pump for extracting waste water in ammonia still, also comprise a remained ammonia interchanger, remained ammonia interchanger is provided with the first import, the first outlet, the second import, the second outlet, the first import is connected with the first outlet, the second import is connected with the second outlet, the first import of remained ammonia interchanger connects the outlet end of remained ammonia pump, remained ammonia pump connects remained ammonia groove by remained ammonia the first transport pipe, described remained ammonia the first transport pipe is also communicated with the outlet end that adds alkali pump, the liquid feeding end that adds alkali pump is communicated with lye vat, the first outlet of remained ammonia interchanger is communicated with ammonia still, the second import of described remained ammonia interchanger connects the outlet end of described waste water pump, also comprise the refrigerator for reparation technology water coolant, on refrigerator, be provided with process cooling water entrance, process cooling water outlet, medium inlet, medium water return outlet, it is characterized in that:
The second outlet of described remained ammonia interchanger connects the first import of First Heat Exchanger, and the first outlet of First Heat Exchanger is connected to advanced waste treatment apparatus, and the first import, first outlet of First Heat Exchanger are connected; The second outlet of First Heat Exchanger is connected to the first medium entrance of heat pump set, and the first medium outlet of heat pump set is connected with the second import of First Heat Exchanger, and the second import, second outlet of First Heat Exchanger are connected; The second medium outlet of heat pump set connects the medium inlet of described refrigerator, and the medium water return outlet of refrigerator connects the second medium entrance of heat pump set.
As further technical scheme of the present utility model: utilize in the energy conserving system of coking distilled ammonia wastewater waste heat reparation technology water coolant at this, the first medium outlet of heat pump set is connected with the second import of First Heat Exchanger by hot water pump.
The beneficial effects of the utility model are:
The utility model is taking circulating hot water as carrier, produce the driving heat source of steam (or hot water) as refrigerator by heat pump set, both realized the remaining pick up the heat of coking distilled ammonia wastewater, and reduced again and sent the consumption of distilled ammonia wastewater process cooling water and refrigerator coal gas (or steam) consumption outside; Also solved coal gas as refrigeration thermal source to atmosphere polluting problem.
In addition, the steam (or hot water) that only heat pump set need to be produced when enforcement passes into refrigerator, does not affect other techniques of process cooling water; And only original ammonia still process interchanger need to be transformed, realize distilled ammonia wastewater exhaust-heat absorption by circulating hot water, do not affect ammonia still process and Sheng Tuo working procedure systems; On prior art basis, transformation is simple, easily implements, and improvement cost is low.
This system is applicable to all coal chemical enterprises, oil refining enterprise etc.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is described further:
Fig. 1 is the structural representation of the utility model embodiment;
In figure: 1 ammonia still, 2 waste water pumps, 3 remained ammonia interchanger, 31 first imports, 32 first outlets, 33 second imports, 34 second outlets, 4 remained ammonia pumps, 5 remained ammonia the first transport pipes, 6 remained ammonia grooves, 7 add alkali pump, 8 lye vats, 9 refrigerators, 91 process cooling water entrances, 92 process cooling water outlets, 93 medium inlets, 94 medium water return outlets, 10 First Heat Exchangers, 101 first imports, 102 first outlets, 103 second outlets, 104 second imports, 11 advanced waste treatment apparatus, 12 heat pump set, 121 first medium entrances, 122 first medium outlets, 123 second medium outlets, 124 second medium entrances, 13 hot water pumps, 14 gas purification retrieving arrangements, 15 cooling water devices, 16 water coolant water recovery apparatuses.
Embodiment
As shown in Figure 1, this utilizes the energy conserving system of coking distilled ammonia wastewater waste heat reparation technology water coolant, comprise the waste water pump 2 for extracting ammonia still 1 interior waste water, also comprise a remained ammonia interchanger 3, remained ammonia interchanger 3 is provided with the first import 31, the first outlet 32, the second import 33, the second outlet 34, the first import 31 is connected with the first outlet 32, the second import 33 is connected with the second outlet 34, the first import 31 of remained ammonia interchanger 3 connects the outlet end of remained ammonia pump 4, remained ammonia pump 4 connects remained ammonia groove 6 by remained ammonia the first transport pipe 5, described remained ammonia the first transport pipe 5 is also communicated with the outlet end that adds alkali pump 7, the liquid feeding end that adds alkali pump 7 is communicated with lye vat 8, the first outlet 32 of remained ammonia interchanger 3 is communicated with ammonia still 1, the second import 33 of described remained ammonia interchanger 3 connects the outlet end of described waste water pump 2.
This utilizes the energy conserving system of coking distilled ammonia wastewater waste heat reparation technology water coolant also to comprise the refrigerator 9 for reparation technology water coolant; On refrigerator 9, be provided with process cooling water entrance 91, process cooling water outlet 92, medium inlet 93, medium water return outlet 94.
The special feature of this energy conserving system is:
The second outlet of described remained ammonia interchanger 3 connects the first import 101 of First Heat Exchanger 10, and the first outlet 102 of First Heat Exchanger 10 is connected to advanced waste treatment apparatus 11, and the first import 101 of First Heat Exchanger 10, the first outlet 102 are connected.The second outlet 103 of First Heat Exchanger 10 is connected to the first medium entrance 121 of heat pump set 12, the first medium outlet 122 of heat pump machine 12 is connected with the second import 104 of First Heat Exchanger 10, and the second import 104 of First Heat Exchanger 10, the second outlet 103 are connected; The second medium outlet 123 of heat pump set 12 connects the medium inlet 93 of described refrigerator 9, and the medium water return outlet 94 of refrigerator 9 connects the second medium entrance 124 of heat pump set 12.
The further technology that this embodiment takes: the first medium outlet 122 of heat pump set 12 is connected with the second import 104 of First Heat Exchanger 10 by hot water pump 13.
First Heat Exchanger 10, heat pump set 12 in the utility model are prior art, can directly buy.
This utilizes the energy conserving system principle of work of coking distilled ammonia wastewater waste heat reparation technology water coolant as follows:
Distilled ammonia wastewater and circulating hot water are realized heat exchange First Heat Exchanger 10 is interior, after heat exchange, distilled ammonia wastewater enters advanced waste treatment apparatus 11, advanced waste treatment apparatus is the de-advanced treatment operation equipment therefor of life in existing technique, and advanced waste treatment apparatus is prior art.
Circulating hot water, after First Heat Exchanger 10 is heated to more than 70 DEG C, is delivered to heat pump set 12 by the first medium entrance 121 of heat pump set, and the another kind of medium in heat pump set 12 and circulating hot water heat exchange also produce steam (or hot water).
The steam (or hot water) producing by second medium export 123, medium inlet 93 sends into refrigerator 9, this steam (or hot water) evaporates thermal source as refrigerator inner refrigerant after entering refrigerator, refrigeration agent heat absorption becomes refrigerant vapour, after the water quench that refrigerant vapour passes into via process cooling water entrance 91, become water as refrigerant, under low-pressure state, evaporate, the heat of process cooling water in absorption tube, generation meets the process cooling water of downstream customer demand, deliver to all the other operations and use, for example gas purification retrieving arrangement 14.Reduce like this consumption to coal gas (or steam), thereby realized the object with distilled ammonia wastewater waste heat reparation technology water coolant, realized the remaining pick up the heat of distilled ammonia wastewater.
Wherein the backwater of refrigerator 9 returns to the interior formation circulation of heat pump set 12 by the second medium entrance 124 of medium water return outlet 94, heat pump set.
Circulating hot water is after heat pump set 12, and the second import 104 of first medium outlet 122 by heat pump set, hot water pump 13, First Heat Exchanger 10 is back in First Heat Exchanger, forms circulation.
Heat pump set 12 is connected with cooling water device 15, water coolant water recovery apparatus 16, and cooling water device 15, water coolant water recovery apparatus 16 are that heat pump set is implemented to cooling water supply water recovery apparatus, are prior art.
Claims (2)
1. utilize the energy conserving system of coking distilled ammonia wastewater waste heat reparation technology water coolant, comprise the waste water pump for extracting waste water in ammonia still, also comprise a remained ammonia interchanger, remained ammonia interchanger is provided with the first import, the first outlet, the second import, the second outlet, the first import is connected with the first outlet, the second import is connected with the second outlet, the first import of remained ammonia interchanger connects the outlet end of remained ammonia pump, remained ammonia pump connects remained ammonia groove by remained ammonia the first transport pipe, described remained ammonia the first transport pipe is also communicated with the outlet end that adds alkali pump, the liquid feeding end that adds alkali pump is communicated with lye vat, the first outlet of remained ammonia interchanger is communicated with ammonia still, the second import of described remained ammonia interchanger connects the outlet end of described waste water pump, also comprise the refrigerator for reparation technology water coolant, on refrigerator, be provided with process cooling water entrance, process cooling water outlet, medium inlet, medium water return outlet, it is characterized in that:
The second outlet of described remained ammonia interchanger connects the first import of First Heat Exchanger, and the first outlet of First Heat Exchanger is connected to advanced waste treatment apparatus, and the first import, first outlet of First Heat Exchanger are connected; The second outlet of First Heat Exchanger is connected to the first medium entrance of heat pump set, and the first medium outlet of heat pump set is connected with the second import of First Heat Exchanger, and the second import, second outlet of First Heat Exchanger are connected; The second medium outlet of heat pump set connects the medium inlet of described refrigerator, and the medium water return outlet of refrigerator connects the second medium entrance of heat pump set.
2. the energy conserving system that utilizes coking distilled ammonia wastewater waste heat reparation technology water coolant according to claim 1, is characterized in that: the first medium outlet of heat pump set is connected with the second import of First Heat Exchanger by hot water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420143599.XU CN203768059U (en) | 2014-03-27 | 2014-03-27 | Energy-saving system for preparing process cooling water by using coking distilled ammonia wastewater waste heat |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420143599.XU CN203768059U (en) | 2014-03-27 | 2014-03-27 | Energy-saving system for preparing process cooling water by using coking distilled ammonia wastewater waste heat |
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| CN203768059U true CN203768059U (en) | 2014-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420143599.XU Expired - Fee Related CN203768059U (en) | 2014-03-27 | 2014-03-27 | Energy-saving system for preparing process cooling water by using coking distilled ammonia wastewater waste heat |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110440626A (en) * | 2019-09-05 | 2019-11-12 | 荏原冷热***（中国）有限公司 | Ammonia still process column overhead ammonia steam heat recovery system and coking process system |
-
2014
- 2014-03-27 CN CN201420143599.XU patent/CN203768059U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110440626A (en) * | 2019-09-05 | 2019-11-12 | 荏原冷热***（中国）有限公司 | Ammonia still process column overhead ammonia steam heat recovery system and coking process system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20190327 |
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| CF01 | Termination of patent right due to non-payment of annual fee |