CN207033500U - A kind of combustion gas cogeneration technology optimizes system - Google Patents
A kind of combustion gas cogeneration technology optimizes system Download PDFInfo
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- CN207033500U CN207033500U CN201720588600.3U CN201720588600U CN207033500U CN 207033500 U CN207033500 U CN 207033500U CN 201720588600 U CN201720588600 U CN 201720588600U CN 207033500 U CN207033500 U CN 207033500U
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- heat exchanger
- combustion gas
- heat
- cogeneration technology
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Abstract
The utility model discloses a kind of combustion gas cogeneration technology to optimize system, including electricity generation grid-connecting system and heating system；The electricity generation grid-connecting system include by pipeline be sequentially connected gas ductwork the first control valve, 1#Heat exchanger, expanding machine, output electricity have at expanding machine and miniature combustion engine two；Heating system described in the heating system includes water charging system, former Industrial Boiler, heat-exchange system, and output steam has at heat exchange system and boiler two.The utility model be not only Industrial Boiler clean development and popularization provides economic realization, also ensured in gas ductwork the supply safety of industry scheduling.Whole process system energy utilization rate of the present utility model is high, exergy efficiencyX is high, floor space is small, for region-type cogeneration strong adaptability, has very strong development potentiality and application prospect.
Description
Technical field
The utility model belongs to combustion gas cogeneration field, and in particular to a kind of combustion gas cogeneration technology optimizes system.
Background technology
The script of cogeneration is initiated by the water band that is cooled to a large amount of low-pressure steam condensation latent heats of steam turbine discharge
Walk, and using improving back pressure or by the way of drawing gas, while generating electricity, realized with low-pressure steam heat supply.Into combustion gas
The combustion gas at door station is typically all high-pressure gas, but the pressure for importing downstream pipe network generally is low-pressure fuel gas, and this is also just meaned
Containing abundant pressure energy in pipeline gas, particularly in the operating mode of big flow, pressure energy more should not be underestimated.
Blowing afloat and continue, the present situation of support and Development of Gas Industry plus national policy with energy-saving and emission-reduction bugle,
The fuel gas supply for being directed to region-type is progressively carried out towards cogeneration direction in like a raging fire.The combustion gas heat of region-type
Air supply system and resident's either industrial user or other related electricity consumptions in the region can be electrically and thermally supplied caused by CCHP
Equipment, to realize making full use of for the energy.But electricity can boost, it is remote to be transported to thousands of kilometers, but steam, hot water have one
Individual economic fed distance, this depends on pipeline investment, conveying power consumption compared with the price of heat.At present it is generally acknowledged that warp
Ji fed distance, supply（0.1Mpa）For 2~3km, heating and life heat about 5km, but region alliance is just eligible, this
Just promote the further development of region-type cogeneration.
In summary, a kind of combustion gas cogeneration technology optimization system is developed, high-pressure natural gas can be made full use of in itself
The pressure energy contained, is generated electricity using pressure energy and miniature combustion engine generates electricity with heat supply to create more economic benefits, improves energy profit
With rate.
Chinese patent application CN103452611 A disclose a kind of cogeneration system of combined cycle, including steam turbine,
Waste heat boiler, heat supply network steam bleeding system；Steam turbine includes high, medium and low cylinder pressure；Waste heat boiler includes high, medium and low voltage drum, three vapour
Bag produces three strands of steam respectively：High, medium and low voltage steam, expansion working in the high, medium and low cylinder pressure of steam turbine is injected separately into, driven
Generator exports electric energy.The cogeneration system of this combined cycle carries out generating using three stage gas pressure and improves efficiency respectively,
But entirely technics comparing is numerous and diverse, and the cost of equipment that whole technique is related to is higher, and the gaseous-pressure that he is applicable will
Ask higher, be directed to the combustion gas of low pressure condition then without too obvious economic benefit.
Chinese patent application CN1721771A discloses a kind of cogeneration system and energy supply system, by with defeated
Module occurs for multiple electrical heat energies of the sleeve pipe of power transmission energy and heat energy；Formed by machine power generating means and heat pump assembly,
And module occurs for multiple heat energy of the sleeve pipe with conveying heat energy；And with multiple energy occur module and receive electric energy with
And the sleeve pipe of heat energy, and the intensive energy from modules and to the matrix for needing side to be supplied.This cogeneration system
Whole technological process of uniting is very simple and practical, but under conditions of transmission of electricity and the defeated multiple modules of heat, can only also supply individual
Other user, overall is less efficient, and is not suitable for the heat supply of region-type collective, the situation of power supply.
Utility model content
The purpose of this utility model be to realize Industrial Boiler clean development and popularization provides economic realization, secondly
Supply for the industry scheduling in gas ductwork provides safeguard safely, and it is not high additionally can fully to improve existing equipment utilization rate
Deficiency.Improvement is optimized for the original process system of region-type combustion gas cogeneration, improves the overall using energy source of system
Rate, the fire utilization rate of original system is improved, further improve the benefit of region-type combustion gas cogeneration.
The utility model realizes that the technical scheme of above-mentioned purpose is：
A kind of combustion gas cogeneration technology optimizes system, including electricity generation grid-connecting system and heating system；
The electricity generation grid-connecting system include by pipeline be sequentially connected gas ductwork the first control valve, 1#It is heat exchanger, swollen
Swollen machine, the combustion gas after the expanding machine are divided into two-way, are sequentially connected the first pressure regulator valve, miniature combustion engine, the second generating all the way
Machine, another way are sequentially connected the second pressure regulator valve, former Industrial Boiler, and the output end of the expanding machine and miniature combustion engine is sent out with first respectively
Motor, the second generator drive connection, the first described generator, the second generator output end by electric power grid-connection cabinet to
Outer output power；
The heating system includes water charging system, former Industrial Boiler, heat-exchange system, and the heat-exchange system includes relying on pipeline
The miniature combustion engine that is sequentially connected, 2#Heat exchanger, 3#Heat exchanger, the water charging system include the water pump of connection water supply tank, the water pump
Output end is divided into three tunnels, and the first via is sequentially connected 3 by pipeline#Heat exchanger, 1#Heat exchanger, the second control valve, 2#Heat exchanger；The
Two tunnels are sequentially connected the 3rd control valve, 2 by pipeline#Heat exchanger；3rd tunnel connects former Industrial Boiler by pipeline, and described 2#Change
The delivery port of hot device connects the jet chimney of former Industrial Boiler.
Further, in another enforceable scheme of the present utility model, the quantity of described miniature combustion engine for 1 with
On, depending on the thermic load in the determination foundation pipe gas flow or required generated energy and system of its amount needed for cold water.
Further, in another enforceable scheme of the present utility model, the first described pressure regulator valve and the second pressure regulation
Valve is pressure-reducing valve.
Further, in another enforceable scheme of the present utility model, the fuel gas pipeline of described former Industrial Boiler
On be also equipped with the heating device and flowmeter.Heating device can prevent low temperature from being caused negatively to the service life of precision instrument
Influence.
Further, in another enforceable scheme of the present utility model, described heating device is heater or changed
Hot device.
Further, in another enforceable scheme of the present utility model, described heater is electric heater or combustion
Hot-air heater.
Further, in another enforceable scheme of the present utility model, the thermal source of the heat exchanger is to be arranged in system
Low-temperature flue gas or hot water, the steam put.
Further, in another enforceable scheme of the present utility model, the water pump is explosion-proof pump, described expansion
Machine is turbo-expander.
Further, in another enforceable scheme of the present utility model, the first described generator, the second generator
It is the asynchronous generator of explosion-proof type.
Further, in another enforceable scheme of the present utility model, described 1#Heat exchanger, 2#Heat exchanger, 3#Change
Hot device is shell-and-tube heat exchanger.
The utility model has following beneficial effect compared with prior art and present situation：
1st, realize Industrial Boiler economization, clean.The utility model improve existing Industrial Boiler be generally combustion gas,
The higher present situation of oil burning boiler operation cost, development and popularization for Industrial Boiler provide economic realization.
2nd, whole technique exergy efficiencyX is high.Having in technique of the present utility model can generate electricity at two, and pass through expanding machine
Combustion gas after expansion enters back into the miniature combustion engine i.e. utilization of miniature combustion engine import cooling, and and can enough further improves the hair of miniature combustion engine
Electrical efficiency；The increase of electricity can significantly improve the overall exergy efficiencyX of original cogeneration technology so that the warp of whole technique
Benefit of helping is higher, and applicability and popularization are more preferable.
3rd, whole technique optimizing system floor space is small, micro-capacitance sensor structure strong applicability.The utility model is directed on the spot
For transformation, because floor space is small, solve the drawbacks of script region area is little, make full use of existing place to carry out system and change
Optimization is made, and row major is entered with regard to system electricity amount and consumed on the spot, unnecessary grid-connected in progress, the form of this micro-capacitance sensor is applicable
Property is strong, and development potentiality is huge.
4th, technique is simple, safe and reliable.Safe operation during the utility model is dispatched for gas industry provides a variety of solutions
Certainly scheme, ensure that supply safety, substantially increase the utilization rate of equipment and installations under original working condition.Secondly the utility model operation
Simple and automaticity is higher, and the equipment designed in system is all common equipment, and application technology is ripe, safe for operation, type selecting
It is convenient.
Brief description of the drawings
Fig. 1 is the schematic diagram that region-type combustion gas cogeneration optimizes system.
Shown in figure：The control valves of 1- first, 2-1#Heat exchanger, 3- expanding machines, 4- electric power grid-connection cabinets, the pressure regulator valves of 5- first,
6- miniature combustion engines, 7-2#Heat exchanger, 8-3#Heat exchanger, 9- firing equipments, the pressure regulator valves of 10- second, 11- original Industrial Boilers, 12- water pumps,
13- water supply tanks, the generators of 14- first, the generators of 15- second, the control valves of 16- second, the control valves of 17- the 3rd.
Embodiment
To be better understood from the utility model, the utility model is further retouched with reference to embodiment and accompanying drawing
State, but embodiment of the present utility model is not limited only to this.
As shown in figure 1, a kind of combustion gas cogeneration technology optimization system, including electricity generation grid-connecting system and heating system；
The electricity generation grid-connecting system includes the first control valve 1,1 that gas ductwork is sequentially connected by pipeline#Heat exchanger 2,
Expanding machine 3, the combustion gas after the expanding machine 3 are divided into two-way, are sequentially connected the first pressure regulator valve 5, miniature combustion engine 6, all the way
Two generators 15, another way are sequentially connected heating device 9, the second pressure regulator valve 10, flowmeter, former Industrial Boiler 11, and described
One pressure regulator valve 5 and the second pressure regulator valve 10 are pressure-reducing valve.The output end of the expanding machine 3 and miniature combustion engine 6 generates electricity with first respectively
Machine 14, the drive connection of the second generator 15, the first described generator 14, the output end of the second generator 15 by electric power simultaneously
4 outside output power of net cabinet, realizes that electric power is grid-connected.
The heating system includes water charging system, former Industrial Boiler 11, heat-exchange system, and the heat-exchange system is included by pipe
The miniature combustion engine 6,2 that road is sequentially connected#Heat exchanger 7,3#Heat exchanger 8, the water charging system include the water pump 12 of connection water supply tank 13,
The output end of the water pump 12 is divided into three tunnels, and the first via is sequentially connected 3 by pipeline#Heat exchanger 8,1#Heat exchanger 2, second controls
Valve 16,2#Heat exchanger 7；Second tunnel is sequentially connected the 3rd control valve 17,2 by pipeline#Heat exchanger 7；3rd tunnel connects by pipeline
Former Industrial Boiler 11, described 2#The delivery port of heat exchanger 7 connects the jet chimney of former Industrial Boiler 11.Water pump 12 will wherein one
Water elder generation and 3#Heat exchanger 8 is exchanged heat again with 1#Heat exchanger 2 carries out second and exchanged heat, and is then converged by pipeline and another strand of water
Afterwards again with 2#Heat exchanger 7 is exchanged heat, and eventually becomes vapor；Water is then directly entered afterwards by water pump 12 all the way in addition
Former Industrial Boiler 11, eventually becomes vapor, and last two strands of steam enters downstream user by jet chimney.
The quantity of described miniature combustion engine 6 is more than 1, can be two, three ..., the determination of its amount is according to pipe gas
Depending on thermic load in flow or required generated energy and system needed for cold water.Described heating device 9 is heater or heat exchange
Device.Described heater is electric heater or combustion heater.The thermal source for stating heat exchanger is the low temperature cigarette discharged in system
Gas or hot water, steam.
Guangzhou Industrial Boiler website relevant parameter is that Imported gas pressure is 16bar, temperature 30oC, flow 300Nm3/
H~650Nm3/ h, the state into water are pressure 12bar, temperature 30oC.Periphery needs steam as thermal source and industrial area itself
With many current consuming apparatus.
Design is optimized according to above-mentioned condition background, water pump 12 described in the present embodiment selects explosion-proof pump, and described is swollen
Swollen machine 3 is turbo-expander, expansion efficiency 0.78, isentropic efficiency 0.7.Described the first generator 14, the second generator
15 be the asynchronous generator of explosion-proof type.Described 1#Heat exchanger 2,2#Heat exchanger 7,3#Heat exchanger 8 is shell-and-tube heat exchanger.
The single-machine capacity scope of miniature combustion engine 6 is 25kw~300kw.
Existing flow is 400Nm3/ h, pressure 16bar, temperature 30oC natural gas, by 1#The heat exchange of heat exchanger 2
Temperature is changed into 60 afterwardsoC, after then passing through the expansion of expanding machine 3, temperature is changed into 10oC, pressure are changed into 6.5bar, then by pipe
Road is shunted, and one is burnt for 45% natural gas into miniature combustion engine, and caused high temperature is 669oC；One other 55% day
Right gas is then changed into temperature after firing equipment 9 and pressure-reducing valve 10 and asks 30oC, pressure 1.2bar, subsequently into former industrial pot
Stove 11 is 30 with temperatureoC, the water that pressure is 12bar, flow is 2310kg/h is exchanged heat, and final vapor is 190oC；In addition
One temperature is 30oC, pressure be 12bar, flow 1370kg/h, the water that a portion flow is 680kg/h is first with 3#
Heat exchanger 8 carries out first time heat exchange, and the temperature after exchanging heat is 80oC, therewith with 1#Heat exchanger carries out second and exchanged heat, and exchanges heat it
Temperature afterwards reaches 74 oC, with 2 after then being mixed with one other 690kg/h water#Heat exchanger 7 is exchanged heat, finally
Temperature after heat exchange is 190 oC, pressure 12bar；It is 6.5kw that expanding machine, which generates electricity, in whole technique, and miniature combustion engine generated energy is
857kw, i.e. total electricity are 863.5kw, temperature 190 oC steam 3680kg/h, the exergy efficiencyX of whole system reach near
47%, illustrate that the effect of optimization of whole system is preferable.
Above-described embodiment of the present utility model only clearly illustrates the utility model example, and is not to this
The restriction of the embodiment of utility model.For the those of ordinary skill in the field, on the basis of the above description also
Other various forms of changes or variation can be made.There is no necessity and possibility to exhaust all the enbodiments.It is all
All any modification, equivalent and improvement made within the spirit and principles of the utility model etc., it is new to should be included in this practicality
Within type scope of the claims.
Claims (10)
1. a kind of combustion gas cogeneration technology optimizes system, it is characterised in that including electricity generation grid-connecting system and heating system；
The electricity generation grid-connecting system includes the first control valve that gas ductwork is sequentially connected by pipeline（1）、1#Heat exchanger（2）, it is swollen
Swollen machine（3）, by the expanding machine（3）Combustion gas afterwards is divided into two-way, is sequentially connected the first pressure regulator valve all the way（5）, miniature combustion engine
（6）, the second generator（15）, another way is sequentially connected the second pressure regulator valve（10）, former Industrial Boiler（11）, the expanding machine（3）
And miniature combustion engine（6）Output end respectively with the first generator（14）, the second generator（15）Drive connection, described first generates electricity
Machine（14）, the second generator（15）Output end pass through electric power grid-connection cabinet（4）Outside output power；
The heating system includes water charging system, former Industrial Boiler（11）, heat-exchange system, the heat-exchange system include rely on pipeline
The miniature combustion engine being sequentially connected（6）、2#Heat exchanger（7）、3#Heat exchanger（8）, the water charging system is including connecting water supply tank（13）Water
Pump（12）, the water pump（12）Output end be divided into three tunnels, the first via is sequentially connected 3 by pipeline#Heat exchanger（8）、1#Heat exchanger
（2）, the second control valve（16）、2#Heat exchanger（7）；Second tunnel is sequentially connected the 3rd control valve by pipeline（17）、2#Heat exchanger
（7）；3rd tunnel connects former Industrial Boiler by pipeline（11）, described 2#Heat exchanger（7）Delivery port connect former Industrial Boiler
（11）Jet chimney.
A kind of 2. combustion gas cogeneration technology optimization system according to claim 1, it is characterised in that：Described miniature combustion engine
（6）Quantity be more than 1.
A kind of 3. combustion gas cogeneration technology optimization system according to claim 1, it is characterised in that：Described first is adjusted
Pressure valve（5）With the second pressure regulator valve（10）It is pressure-reducing valve.
A kind of 4. combustion gas cogeneration technology optimization system according to claim 1, it is characterised in that：Described original industry
Boiler（11）Fuel gas pipeline on be also equipped with heating device（9）And flowmeter.
A kind of 5. combustion gas cogeneration technology optimization system according to claim 4, it is characterised in that：Described heating is set
It is standby（9）For heater or heat exchanger.
A kind of 6. combustion gas cogeneration technology optimization system according to claim 5, it is characterised in that：Described heater
For electric heater or combustion heater.
A kind of 7. combustion gas cogeneration technology optimization system according to claim 5, it is characterised in that：The heat exchanger
Thermal source is the low-temperature flue gas or hot water, steam discharged in system.
A kind of 8. combustion gas cogeneration technology optimization system according to claim 1, it is characterised in that：The water pump（12）
For explosion-proof pump, described expanding machine（3）For turbo-expander.
A kind of 9. combustion gas cogeneration technology optimization system according to claim 1, it is characterised in that：The first described hair
Motor（14）, the second generator（15）It is the asynchronous generator of explosion-proof type.
A kind of 10. combustion gas cogeneration technology optimization system according to claim 1, it is characterised in that：Described 1#Heat exchange
Device（2）、2#Heat exchanger（7）、3#Heat exchanger（8）It is shell-and-tube heat exchanger.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720588600.3U CN207033500U (en) | 2017-05-25 | 2017-05-25 | A kind of combustion gas cogeneration technology optimizes system |
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| CN201720588600.3U CN207033500U (en) | 2017-05-25 | 2017-05-25 | A kind of combustion gas cogeneration technology optimizes system |
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| CN207033500U true CN207033500U (en) | 2018-02-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165682A (en) * | 2017-05-25 | 2017-09-15 | 华南理工大学 | A kind of combustion gas cogeneration technology optimizes system |
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2017
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165682A (en) * | 2017-05-25 | 2017-09-15 | 华南理工大学 | A kind of combustion gas cogeneration technology optimizes system |
| CN107165682B (en) * | 2017-05-25 | 2023-12-01 | 华南理工大学 | Gas cogeneration process optimization system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180223 Termination date: 20180525 |
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| CF01 | Termination of patent right due to non-payment of annual fee |