CN203035277U - Power generating device by using low temperature waste heat of waste gas in plastic production process - Google Patents
Power generating device by using low temperature waste heat of waste gas in plastic production process Download PDFInfo
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- CN203035277U CN203035277U CN 201320048124 CN201320048124U CN203035277U CN 203035277 U CN203035277 U CN 203035277U CN 201320048124 CN201320048124 CN 201320048124 CN 201320048124 U CN201320048124 U CN 201320048124U CN 203035277 U CN203035277 U CN 203035277U
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Abstract
The utility model discloses a power generating device by using low temperature waste heat of waste gas in plastic production process. The power generating device by using the low temperature waste heat of the waste gas in the plastic production process comprises a waste gas generating device, an evaporimeter, a low temperature power generating unit, and a cooling water tower. The low temperature power generating unit is connected with the evaporimeter and the cooling water tower through pipelines to form a loop. The low temperature power generating unit comprises a two-threaded-rod expansion machine, a condenser, a cooling water pump, a high-pressure working medium pump, a preheater, and a generator. An output shaft of the two-threaded-rod expansion machine is connected with the generator, an input end of the two-threaded-rod expansion machine is connected with the evaporimeter, and an output end of the two-threaded-rod expansion machine is connected with the condenser. One output end of the condenser is connected with the pre-heater through a pipeline arranged with the high-pressure working medium pump, and the other output end of the condenser is connected with the cooling water tower. The condenser and the cooling water tower are connected to form a loop through a pipeline arranged with the cooling pimp. The pre-heater is connected with the evaporimeter. The evaporimeter is also connected with a material recoverer through a pipeline. The power generating device by using the low temperature waste heat of the waste gas in the plastic production process is simple in structure, stable in operation, low in cost, and higher in power generating efficiency.
Description
Technical field
The utility model belongs to the low temperature exhaust heat recovery technology, relates to the waste heat recovering device of gaseous substance in cooling procedure, refers in the plastic cement production technology recycling of waste heat when the waste heat gas cooling of discharging is cooled off especially.
Background technique
In recent years, the recycling of industrial exhaust heat becomes more and more important role in energy-saving and emission-reduction.Have 50% finally directly to discharge with the form of low-grade exhaust heat in the human heat energy that utilizes.Industrial exhaust heat generally is divided into the high-temperature residual heat more than 400 ℃, 400 ℃-150 ℃ middle temperature waste heat and the low temperature exhaust heat below 150 ℃.In recent years, the high-temperature residual heat and the middle temperature cogeneration technology that are used for the recovery flue gas had obtained the popularization of wide model, and had obtained good economic and environmental benefit.But for the low temperature exhaust heat below 150 ℃, mainly be to recycle in the mode of heat exchange, as flue gas, technology waste gas etc.
Electric energy is high-grade energy, along with China's rapid development of economy, China's industry is increasing to the demand of electric power resource, especially in recent years, the situation that supply falls short of demand has appearred in the supply of electric power resource, even the electricity consumption restriction has been carried out to the enterprise of high electricity consumption in the area that has.If UTILIZATION OF VESIDUAL HEAT IN a large amount of in the production technology can be got up, changing into electric power output, to resupply enterprise personal or be incorporated into the power networks, and will alleviate the cost that enterprise increases because of electricity consumption, forms the good circulation of the utilization of resources.At present, more and more enterprises has all been introduced cogeneration technology, but for the cogeneration below 150 ℃, still has technical difficulty at present.
Waste heat gas in the plastic cement explained hereafter generally between 130-160 ℃, needs to cool before the discharging, makes the raw material that wherein contains be able to condensation and reclaims.The recovering device schematic representation of existing plastic cement production technology waste gas as shown in Figure 1, comprise the waste gas generating means 1, water cooling heat exchanger 12, the cooling tower 3 that connect successively by pipeline, water cooling heat exchanger 12 forms the loop with cooling tower 3 by the pipeline that water cooling pump 4 is housed, and water cooling heat exchanger 12 also connects material recover 5.When utilizing this device to handle waste gas, emit a large amount of low temperature exhaust heats in the cooling procedure, but can not be utilized effectively, all be discharged in the environment.This technology has not only been wasted the energy in a large number, has also greatly polluted environment simultaneously.
Summary of the invention
The utility model is in order to solve the above-mentioned defective that prior art exists, and a kind of device that utilizes plastic cement production technology waste gas low-temperature cogeneration is provided, to reach the fully efficient purpose of utilizing of plastic cement production technology waste gas low temperature exhaust heat.
The utility model is achieved through the following technical solutions:
A kind of device that utilizes plastic cement production technology waste gas low-temperature cogeneration comprises the waste gas generating means, vaporizer, low-temperature electricity-generating unit and the cooling tower that connect successively by pipeline; Described low-temperature electricity-generating unit is connected to form the loop with vaporizer, cooling tower respectively by pipeline; Described low-temperature electricity-generating unit comprises twin-screw expander, condenser, cooling waterpump, the high-pressure working medium pump, preheater and generator, the output shaft of wherein said twin-screw expander connects generator, input end is connected with an output terminal of vaporizer, output terminal is connected with an input end of condenser, an output terminal of described condenser is connected with the input end of preheater by the pipeline that is provided with the high-pressure working medium pump, another output terminal is connected with the input end of cooling tower, another input end of condenser and the output terminal of cooling tower are connected to form the loop by the pipeline that is provided with cooling waterpump, the output terminal of described preheater is connected with another input end of vaporizer, and another output terminal of described vaporizer is connected with the material recover by pipeline.
Further, described generator is three-phase synchronous generator.
When utilizing the said apparatus generating, plastic cement production technology waste gas enters vaporizer by the road and carries out heat exchange, carrying out hot waste gas after the heat exchange enters into the material recover and carries out material and reclaim, high-pressure gaseous power generation medium behind the absorption heat enters twin-screw expander, acting and the promotion twin-screw expander of expanding turns round, thereby drive the generator operation generating, the low-pressure gas-liquid two-phase power generation medium of Pai Chuing enters condenser and cooling water and carries out liquefy after the heat exchange afterwards, liquid power generation medium enters through the high-pressure working medium pump and enters vaporizer continuation absorption waste gas residual heat heat after preheater is finished preheating, the cooling water that condenser is discharged enters cooling tower, recycles after discharging the heat of cooling.
The utlity model has very high economy and environmental benefit.Be example with certain plastic cement factory, the toxic emission temperature of its wall scroll production line is at 130-160 ℃, per hour discharge amount is 20,000 cubes, utilize water quench to 50 ℃ before the discharging, make industrial chemicals wherein be able to the condensation recovery, the after-heat of cooling heat and waste gas then all discharges atmosphere, and this enterprise of equal production line has 84 more than, and its every day, externally the heat of discharging can reach 1,400,000 kWh; After adopting this programme, guaranteeing that waste hot gas cooling back temperature meets the requirements of 50 ℃ and do not give under the prerequisite of original technology increase extra duty, realized low-temperature cogeneration, the generated energy of wall scroll production line just can reach 35kW, by 350 days, annual electricity generating capacity was 3 * 10
5KWh, year minimizing CO
2Discharge 213 tons.
Compared with prior art, the utlity model has following advantage:
The utility model device adopts twin-screw expander, vaporizer, condenser etc. to form the low-temperature electricity-generating unit, simple in structure, operate steadily, cost is low, generating efficiency is higher, solved the low problem of plastic cement production technology waste gas low temperature exhaust heat recovery utilization rate well, can alleviate the problem of business electrical anxiety to a certain extent, have certain economic and environmental benefit.
Description of drawings
Fig. 1 is existing plastic cement technology waste gas recovering device structural representation.
Fig. 2 is the structural representation that the utility model utilizes the dress of plastic cement production technology waste gas low-temperature cogeneration.
Fig. 3 is the structural representation of low-temperature electricity-generating unit 6 among Fig. 2.
Wherein: 1-waste gas generating means, 2-vaporizer, 3-cooling tower, 4-cooling waterpump, 5-material recover, 6-low-temperature electricity-generating unit, 7-twin-screw expander, 8-condenser, 9-high-pressure working medium pump, 10-preheater, 11-generator, 12-water cooling heat exchanger.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
The device that utilizes plastic cement production technology waste gas low-temperature cogeneration shown in Fig. 2,3 comprises the waste gas generating means 1, vaporizer 2, low-temperature electricity-generating unit 6, the cooling tower 3 that connect successively by pipeline; Described low-temperature electricity-generating unit 6 is connected to form the loop with vaporizer 2, cooling tower 3 respectively by pipeline; Described low-temperature electricity-generating unit 6 comprises twin-screw expander 7, condenser 8, cooling waterpump 4, high-pressure working medium pump 9, preheater 10, generator 11, the output shaft of wherein said twin-screw expander 7 connects generator 11, input end is connected with an output terminal of vaporizer 2, output terminal is connected with an input end of condenser 8, an output terminal of described condenser 8 is connected with the input end of preheater 10 by the pipeline that is provided with high-pressure working medium pump 9, another output terminal is connected with the input end of cooling tower 3, another input end of condenser 8 and the output terminal of cooling tower 3 are connected to form the loop by the pipeline that is provided with cooling waterpump 4, the output terminal of described preheater 10 is connected with another input end of vaporizer 2, and another output terminal of described vaporizer 2 also is connected with material recover 5 by pipeline.
When using the said apparatus generating, the plastic cement production technology waste gas that waste gas generating means 1 is produced enters vaporizer 2 by the road and carries out heat exchange, carrying out hot waste gas after the heat exchange enters into material recover 5 and carries out material and reclaim, high-pressure gaseous power generation medium behind the absorption heat enters twin-screw expander 7, acting and the promotion twin-screw expander of expanding turns round, thereby drive generator 11 operation generatings, the low-pressure gas-liquid two-phase power generation medium of Pai Chuing enters condenser 8 and cooling water and carries out liquefy after the heat exchange afterwards, liquid power generation medium enters through high-pressure working medium pump 9 and enters vaporizer 2 continuation absorption waste gas residual heat heats after preheater 10 is finished preheating, the cooling water that condenser 8 is discharged enters cooling tower 3, recycles after discharging the heat of cooling.
Utilize said apparatus and method that certain plastic cement factory waste gas is reclaimed, both can guarantee that waste hot gas cooling back temperature meets the requirements of 50 ℃, increase extra duty for again original technology, realized low-temperature cogeneration, the annual electricity generating capacity of wall scroll production line is 3 * 10
5KWh, year minimizing CO
2Discharge 213 tons.
Claims (2)
1. a device that utilizes plastic cement production technology waste gas low-temperature cogeneration is characterized in that comprising the waste gas generating means (1), vaporizer (2), low-temperature electricity-generating unit (6) and the cooling tower (3) that connect successively by pipeline; Described low-temperature electricity-generating unit (6) is connected to form the loop with vaporizer (2), cooling tower (3) respectively by pipeline; Described low-temperature electricity-generating unit (6) comprises twin-screw expander (7), condenser (8), cooling waterpump (4), high-pressure working medium pump (9), preheater (10) and generator (11), the output shaft of wherein said twin-screw expander (7) connects generator (11), input end is connected with an output terminal of vaporizer (2), output terminal is connected with an input end of condenser (8), an output terminal of described condenser (8) is connected with the input end of preheater (10) by the pipeline that is provided with high-pressure working medium pump (9), another output terminal is connected with the input end of cooling tower (3), the output terminal of another input end of condenser (8) and cooling tower (3) is connected to form the loop by the pipeline that is provided with cooling waterpump (4), the output terminal of described preheater (10) is connected with another input end of vaporizer (2), and another output terminal of described vaporizer (2) is connected with material recover (5) by pipeline.
2. the device that utilizes plastic cement production technology waste gas low-temperature cogeneration according to claim 1 is characterized in that described generator (11) is three-phase synchronous generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320048124 CN203035277U (en) | 2013-01-29 | 2013-01-29 | Power generating device by using low temperature waste heat of waste gas in plastic production process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320048124 CN203035277U (en) | 2013-01-29 | 2013-01-29 | Power generating device by using low temperature waste heat of waste gas in plastic production process |
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| Publication Number | Publication Date |
|---|---|
| CN203035277U true CN203035277U (en) | 2013-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320048124 Expired - Fee Related CN203035277U (en) | 2013-01-29 | 2013-01-29 | Power generating device by using low temperature waste heat of waste gas in plastic production process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089359A (en) * | 2013-01-29 | 2013-05-08 | 山西易通环能科技集团有限公司 | Device and method for utilizing plastic manufacturing technique waste gas and low temperature exhaust heat to generate electricity |
| CN109139163A (en) * | 2018-09-12 | 2019-01-04 | 技新（浙江）节能技术有限公司 | A kind of apparatus and method of low-temperature cogeneration |
-
2013
- 2013-01-29 CN CN 201320048124 patent/CN203035277U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089359A (en) * | 2013-01-29 | 2013-05-08 | 山西易通环能科技集团有限公司 | Device and method for utilizing plastic manufacturing technique waste gas and low temperature exhaust heat to generate electricity |
| CN109139163A (en) * | 2018-09-12 | 2019-01-04 | 技新（浙江）节能技术有限公司 | A kind of apparatus and method of low-temperature cogeneration |
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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: 20130703 Termination date: 20210129 |
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| CF01 | Termination of patent right due to non-payment of annual fee |