CN106287654B - A kind of waste heat boiler loop heating system and method - Google Patents
A kind of waste heat boiler loop heating system and method Download PDFInfo
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- CN106287654B CN106287654B CN201610652722.4A CN201610652722A CN106287654B CN 106287654 B CN106287654 B CN 106287654B CN 201610652722 A CN201610652722 A CN 201610652722A CN 106287654 B CN106287654 B CN 106287654B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
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- General Engineering & Computer Science (AREA)
- Degasification And Air Bubble Elimination (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The invention discloses a kind of waste heat boiler loop heating system and methods, including oxygen-eliminating device, low-pressure drum, low pressure evaporator, condensation water heater and condensation water heater recirculation pump, the oxygen-eliminating device and the low-pressure drum integrated arrangement, the first valve is set between the low pressure evaporator and the condensation water heater recirculation pump, the second valve is set between the condensation water heater outlet and the condensation water heater recirculation pump, open first valve, second valve is closed, the condensation water heater recirculation pump is in circulating-heating operating condition；First valve is closed, second valve is opened, the condensation water heater recirculation pump is in Hybrid Heating operating condition.Technical solution disclosed by the invention extends the service life of equipment, while improving heating efficiency, shorten the starting time and improving the starting efficiency of unit by that can reduce the vibration in low-pressure drum heating process to low-pressure drum circulating-heating.
Description
Technical field
The invention belongs to combined cycle unit waste heat boiler field, in particular to a kind of waste heat boiler loop heating system and
Method.
Background technique
Need a large amount of energy consumption in field of industrial production, in process of production due to utilization rate the problem of still have it is very much
Heat is unable to get utilization, and waste heat boiler can be sharp again by the heat recovery of gas or liquid generation in combined cycle unit
With with very high economic benefit and social benefit.
Currently, waste heat boiler generally comprises oxygen-eliminating device and low-pressure drum at present.In order to accelerate the starting of combined cycle unit
Speed needs high pressure feed temperature being increased to 130 DEG C before unit starting, it is therefore desirable to the low-pressure steam in waste heat boiler
Packet is heated.After low-pressure drum water level is close to or up to priming level, when needing to further increase feed temperature, Yao Yongshe
The drum reboiling pipeline being placed in low-pressure drum is heated, and default water temperature is progressivelyed reach.
But the above-mentioned method heating speed using the heating of drum reboiling pipeline is slower, and low-pressure drum is caused to vibrate
It is very big, equipment life is influenced, and cause security risk to low-pressure drum, oxygen-eliminating device and steam-water pipe, while generating biggish make an uproar
Sound influences operation and the health of service personnel.
Summary of the invention
For the above problem in the prior art, the present invention provides a kind of waste heat boiler loop heating system and methods.
The technical solution adopted in the present invention is as follows:
In a first aspect, a kind of waste heat boiler loop heating system, which is characterized in that including oxygen-eliminating device, low-pressure drum, low pressure
Evaporator, condensation water heater and condensation water heater recirculation pump, the oxygen-eliminating device and the low-pressure drum integrated arrangement,
First valve, the condensation water heater outlet are set between the low pressure evaporator and the condensation water heater recirculation pump
Second valve is set between the condensation water heater recirculation pump, opens first valve, closes second valve,
The condensation water heater recirculation pump is in circulating-heating operating condition；First valve is closed, second valve, institute are opened
It states condensation water heater recirculation pump and is in Hybrid Heating operating condition.
With reference to first aspect, in the first possible embodiment, first valve is set to the low pressure evaporation
Between device outlet and the condensation water heater recirculation pump entrance；Second valve is set to the condensation water heater and goes out
Between mouth and the condensation water heater recirculation pump entrance.
With reference to first aspect, in second of possible embodiment, the condensation water heater recirculation pump is in and follows
When ring heating cycle, continuous steam-water mixing is formed in the oxygen-eliminating device, circulating-heating is carried out to the low-pressure drum；It is described
When condensation water heater recirculation pump is in Hybrid Heating operating condition, the condensation water heater recirculation pump adds the condensed water
The high-temperature water in hot device exit is mixed with the condensed water of the condensation water heater inlet, heats the condensation water heater.
With reference to first aspect, in the third possible embodiment, the low-pressure drum respectively with superheater and low pressure
Evaporator connection, the saturated vapor isolated enter in the superheater, and the saturated water isolated enters the low pressure evaporator
In.
With reference to first aspect, in the 4th kind of possible embodiment, the low-pressure drum also connects with high, middle pressure feed pump
It connects, for providing water source to high, the middle pressure feed pump.
Second aspect provides a kind of waste heat boiler circular heating method, using above-mentioned first aspect to the 4th kind it is any
Loop heating system described in one, the method being related to are as follows:
A, the water supply valve and auxiliary steam valve for opening the low-pressure drum, form steam-water mixing in the oxygen-eliminating device, right
The low-pressure drum heating and deoxygenation；
B, after the water level of the low-pressure drum reaches preset water level, second valve is closed, opens first valve
Door, starts the condensation water heater recirculation pump, forms continuous steam-water mixing and carries out circulating-heating；
C, when the low-pressure drum water temperature reaches on preset temperature and height, middle pressure drum after water, described the is closed
One valve opens second valve, terminates the circulating-heating to the low-pressure drum, the condensation water heater recirculation pump
To the condensation water heater Hybrid Heating.
In conjunction with second aspect, in the first possible embodiment, in step, the water in the low-pressure drum comes
From the condensation water heater, the auxiliary steam carries out multiple circulating-heating shape to the water in the condensation water heater
At saturated water.
In conjunction with second aspect, in second of possible embodiment, in stepb, second valve is closed, opened
After first valve, the water in the low pressure evaporator flows into the condensation water heater recirculation pump, heats through condensed water
It is flowed into after device in the oxygen-eliminating device and is mixed with the auxiliary steam.
In conjunction with second aspect, in the third possible embodiment, in step C, the condensation water heater follows again
The high-temperature water that ring pump includes: the condensation water heater outlet to the condensation water heater Hybrid Heating adds through the condensed water
The entrance that hot device recirculation pump is delivered to the condensation water heater is mixed with condensed water, improves the temperature of condensation water heater.
It is separated in the low-pressure drum in the 4th kind of possible embodiment in conjunction with the third possible embodiment
Heat absorption forms steam water interface after saturated water out enters the low pressure evaporator, returns to the low-pressure drum by density contrast
In.
Compared with prior art, a kind of waste heat boiler loop heating system and method provided by the present invention, reached as
Lower technical effect:
1) by the way that the first valve is arranged between low pressure evaporator existing in original system and recirculation pump, without in addition adding
Oil (gas) filling device, makes full use of mounted equipment, and revamping workload is small；
2) overall process water supply heating may be implemented during low-pressure drum constantly upper water, improves heating efficiency and unit
Starting efficiency；
3) heating of drum reboiling system is changed to recirculation pump circulating-heating, low-pressure drum is avoided to vibrate, extend drum
Service life reduces environmental noise；
4) when recirculation pump uses circulating-heating, steam water interface is in oxygen-eliminating device, low-pressure drum, low pressure evaporator, condensation
It circulates, condensation water heater, drum, the water in evaporator can be made while heating between water heater, heat savings increase
Add, on high, middle pressure drum when water, ensure that the feed temperature of high, middle pressure drum does not reduce；
5) certain heat is stored in low pressure evaporator, guarantees that low-pressure drum boosting is very fast when unit starting, accelerates machine
Group starting speed.
6) low pressure feed water heating speed can control by the first valve of control, the second valve and inlet valve, operator on duty,
It is easy to adjust.
Detailed description of the invention
Fig. 1 is the waste heat boiler loop heating system structural schematic diagram of a preferred embodiment；
Fig. 2 is the waste heat boiler circular heating method flow diagram of another preferred embodiment.
Specific embodiment
The process and effect of the method for the present invention are further illustrated below with reference to embodiment, embodiment is not to limit this hair
Bright the scope of the patents, all equivalence enforcements or change without departing from carried out by the present invention, is intended to be limited solely by the scope of this patent.
As shown in Figure 1, a kind of waste heat boiler loop heating system is provided in a preferred embodiment of the invention,
Including oxygen-eliminating device, low-pressure drum, low pressure evaporator, condensation water heater and condensation water heater recirculation pump.
Wherein, the effect of oxygen-eliminating device is to carry out deoxygenation using the smallest principle of saturation dissolved oxygen in water, reduces metal parts
Dissolved oxygen corrosion, specifically, when normal operation condensation water heater water close to saturation temperature, oxygen-eliminating device lower part be low-pressure drum
Saturated vapor, using counter-current make water supply formed saturated water carry out deoxygenation.Condensation water heater carrys out coolant-temperature gage before unit starting
Lower, low-pressure drum is passed through auxiliary steam in oxygen-eliminating device and is heated also without steam, the shape after multiple circulating-heating
At saturated water, have the function that heating and deoxygenation.
Wherein, low-pressure drum is the place that steam water interface is separated, the saturated vapor isolated enter superheater after
Continuous heating, forms satisfactory superheated steam, and saturated water, which enters low pressure evaporator through down-comer, to be continued to absorb heat, and it is mixed to form carbonated drink
Object is closed, returns drum using density contrast.
Optionally, combined cycle unit reduces exhaust gas temperature for the heat for making full use of combustion engine to discharge fume, and raising, which is combined, to follow
Ring efficiency, generally using multiple pressure boiler circuit (general to use double pressures or three pressure boilers, using the more of three pressure boilers), low-pressure steam
Packet is in addition to playing the role of carrying out low-pressure saturated steam separation, also as the water tank of oxygen-eliminating device, provides water source to high, middle pressure drum.
Wherein, low pressure evaporator is that the saturated water in low-pressure drum enters heat absorption through down-comer, forms steam water interface, benefit
Drum is returned with density contrast, steam-water separation is carried out in drum, saturated water turns again to low pressure evaporator and absorbs heat.Existing
Have when heating low-pressure drum in technology, there is no temperature rise in low pressure evaporator, saturated water is only become into saturated vapor, in this patent
The circular heating method of use can accumulate certain heat, guarantee unit in the temperature of startup stage raising low pressure evaporator
Low-pressure drum boosting is very fast when starting, accelerates unit starting speed.
Optionally, there are two types of endless form for low pressure evaporator: Natural Circulation and forced circulation, horizontal type waste heat boiler are generally adopted
Use Natural Circulation.
Optionally, low pressure evaporator is set as four groups.
Wherein, condensation water heater is also referred to as low-pressure coal saver, for being heated into condensed water close to saturated water, subsequently into
Deoxygenation is carried out in oxygen-eliminating device, subsequently into low-pressure drum.Exhaust gas temperature is reduced simultaneously, improves boiler efficiency.
Wherein, when unit is run, since combustion gas is after burning, certain nitrogen oxides NO is formedxWith minimal amount of SO2,
There are also water vapours for combustion product simultaneously, although also having certain nitrogen oxides NO by denitrationxRemaining and the SO generated2If solidifying
It bears water that calorifier inlets temperature is too low, reaches the water dew point of flue gas, just will form the condensed water heating that water droplet is attached to rear a few rows
The outside of device causes to corrode.In order to avoid causing the corrosion of heating surface, condensation water heater recirculation pump is by condensation water heater
The high-temperature water of outlet beats that (temperature changes because condenser vacuum is different, generally 30 from condensed water to condensation water heater entrance
~45 DEG C) mixing, improves the temperature of condensation water heater, general inlet temperature control is at 55 DEG C or so.It is solidifying in the present embodiment
It bears water and the second valve is set between heater recirculation pump entrance and condensation water heater outlet, recycled in condensation water heater
First valve is set between pump intake and the outlet of low pressure evaporator, and can control the first valve and the second valve beats Push And Release
It closes to adapt to different operating conditions.
Optionally, condensation water heater recirculation pump is set as three groups.
Wherein, oxygen-eliminating device and low-pressure drum integrated arrangement, when opening the first valve, when closing the second valve, condensed water
Heater recirculation pump is in circulating-heating operating condition；When closing the first valve, when opening the second valve, condensation water heater follows again
Ring pump is in Hybrid Heating operating condition.Specifically, when condensation water heater recirculation pump is in circulating-heating operating condition, in oxygen-eliminating device
It forms continuous steam-water mixing and circulating-heating is carried out to low-pressure drum；Condensation water heater recirculation pump is in Hybrid Heating operating condition
When, condensation water heater recirculation pump is by the condensation of the high-temperature water in condensation water heater exit and condensation water heater inlet
Water mixing, heat-setting water heater.
In water on low-pressure drum, heated using oxygen-eliminating device steam-water mixing, and low-pressure drum water level is close to or up to starting
Stop upper water after water level, can not be heated at this time with the method for oxygen-eliminating device steam-water mixing.The present embodiment eliminates low-pressure drum
In drum reboiling system, when needing to further increase the feed temperature in low-pressure drum, open the first valve, close second
Valve, low pressure evaporator are connected to condensation water heater recirculation pump, and oxygen-eliminating device, low-pressure drum, low pressure evaporator, condensed water add
Hot device and condensation water heater recirculation pump form circulation path, and steam water interface constantly to low-pressure drum circulating-heating, improves
Feed temperature；After reaching preset temperature, the first valve is closed, opens the second valve, low pressure evaporator and condensation water heater
Recirculation pump disconnects connection, restores normal working condition.
A kind of waste heat boiler loop heating system provided in this embodiment, by removing drum reboiling heating system, if
The first valve is set, in the starting unit waste heat stage, the equipment in system can be heated by hydronic mode；It is logical
The vibration for reducing low-pressure drum is crossed, the strain to low-pressure drum and whole system can be reduced, improves service life of equipment；It is following
During ring heats, oxygen-eliminating device, condensation water heater, low pressure evaporator all by heating, have accumulated heat, can be quick
Start unit, improves starting efficiency；The water supply heating efficiency in low-pressure drum can be improved in circulating-heating, while reducing noise dirt
Dye, staff can adjust heating speed, convenience and high-efficiency by the first valve of control and the second valve.
As shown in Fig. 2, a kind of waste heat boiler circular heating method is provided in another preferred embodiment of the present invention,
This method is specific as follows using the loop heating system in above-described embodiment:
S201, the water supply valve and auxiliary steam valve for opening low-pressure drum, form steam-water mixing, to low-pressure steam in oxygen-eliminating device
Packet heating and deoxygenation.
Specifically, in step s 201, before unit starting, on low-pressure drum when water, initial stage opens water on low-pressure drum
Valve simultaneously controls certain flow, and the water in condensation water heater enters in oxygen-eliminating device, while opening auxiliary steam valve, and auxiliary is steamed
Vapour enters in oxygen-eliminating device and forms saturated water to the multiple Hybrid Heating of water, steam-water mixing is formed in oxygen-eliminating device, constantly to low
Press water heating and the deoxygenation in drum.
S202, after the water level of low-pressure drum reaches preset water level, close the second valve, open the first valve, starting is solidifying
Heater recirculation pump is born water, continuous steam-water mixing is formed and carries out circulating-heating.
Specifically, in step S202, when the water level in low-pressure drum is close to preset water level, low-pressure drum is not needed
Water forms steam-water mixing however, to ensure that there is water flowing in oxygen-eliminating device, opens the first valve, closes the second valve, condensed water
The starting of heater recirculation pump, adjustment water supply valve to aperture appropriate, condensation water heater recirculation pump and low pressure evaporator connect
Logical, low-pressure drum, low pressure evaporator, condensation water heater recirculation pump, condensation water heater, oxygen-eliminating device form steam-water mixing stream
Road all carries out circulating-heating to the water in low-pressure drum.
S203, reach on preset temperature and height, middle pressure drum after water when low-pressure drum water temperature, close the first valve
Door opens the second valve, terminates the circulating-heating to low-pressure drum, and condensation water heater recirculation pump is mixed to condensation water heater
Close heating.
Specifically, in step S203, when the water temperature in low-pressure drum reaches water on preset temperature and height, middle pressure drum
After, the first valve is closed, the second valve is opened, condensation water heater outlet connects with condensation water heater recirculation pump entrance
Logical, the high-temperature water that condensation water heater exports is delivered to the entrance of condensation water heater and coagulated by condensation water heater recirculation pump
Mixing is born water, the temperature of condensation water heater is improved, restores normal operating condition.
The first valve is being closed, after opening the second valve, condensation water heater recirculation pump enters normal operating conditions, this
When, heat absorption forms steam water interface after the saturated water isolated in low-pressure drum enters low pressure evaporator, is returned by density contrast
Into low-pressure drum, steam-water separation is carried out in drum, saturated water, which is re-introduced into low pressure evaporator, to absorb heat.It crosses herein
Cheng Zhong does not have temperature rise in low pressure evaporator, saturated water is only become saturated vapor.When opening the first valve, the second valve is closed
Behind the door, the saturated water in low pressure evaporator can be flow in condensation water heater recirculation pump, and then flow to condensed water heating
It in device, oxygen-eliminating device and low-pressure drum, circulates and provides temperature rise for low pressure evaporator, facilitate quick start unit.
The embodiment of the invention provides a kind of waste heat boiler circular heating methods, by opening water supply valve and auxiliary steam
Valve forms steam water interface in oxygen-eliminating device and carries out heating and deoxygenation to low-pressure drum, quickly improves the water temperature in low-pressure drum；
By the first valve of control and the second valve, circulating-heating is carried out to low-pressure drum, it is possible to reduce the vibration of low-pressure drum improves
The service life of equipment, preheats low pressure evaporator, achievees the purpose that quick start unit；Again by condensation water heater
Circulating pump switches between circulating-heating and normal Hybrid Heating working condition, can carry out before unit starting to unit pre-
Heat is preheated using existing equipment, and revamping workload is few, and the device is complicated, and degree is low, and pre-heat effect is good.
Several preferred embodiments of the invention have shown and described in above description, but as previously described, it should be understood that the present invention
Be not limited to forms disclosed herein, should not be regarded as an exclusion of other examples, and can be used for various other combinations,
Modification and environment, and the above teachings or related fields of technology or knowledge can be passed through within that scope of the inventive concept describe herein
It is modified.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, then it all should be in this hair
In the protection scope of bright appended claims.
Claims (9)
1. a kind of waste heat boiler loop heating system, which is characterized in that including oxygen-eliminating device, low-pressure drum, low pressure evaporator, condensation
Water heater and condensation water heater recirculation pump；
The oxygen-eliminating device and the low-pressure drum integrated arrangement, the low-pressure drum are connected with the low pressure evaporator, institute
State and the first valve be set between low pressure evaporator and the condensation water heater recirculation pump, condensation water heater outlet with
The second valve is set between the condensation water heater recirculation pump；
First valve is set between the low pressure evaporator outlet and the condensation water heater recirculation pump entrance；Institute
The second valve is stated to be set between the condensation water heater outlet and the condensation water heater recirculation pump entrance；It is described solidifying
The outlet of heater recirculation pump is born water to communicate with the condensation water heater entrance；
The outlet of the condensation water heater is connected with the oxygen-eliminating device；
First valve is opened, second valve is closed, the condensation water heater recirculation pump is in circulating-heating work
Condition；First valve is closed, second valve is opened, the condensation water heater recirculation pump is in Hybrid Heating work
Condition.
2. loop heating system according to claim 1, which is characterized in that the condensation water heater recirculation pump is in
When circulating-heating operating condition, continuous steam-water mixing is formed in the oxygen-eliminating device, circulating-heating is carried out to the low-pressure drum；Institute
When stating condensation water heater recirculation pump and being in Hybrid Heating operating condition, the condensation water heater recirculation pump is by the condensed water
High-temperature water at heater outlet is mixed with the condensed water of the condensation water heater inlet, heats the condensed water heating
Device.
3. loop heating system according to claim 1, which is characterized in that the low-pressure drum respectively with superheater and low
Evaporator connection is pressed, the saturated vapor isolated enters in the superheater, and the saturated water isolated is evaporated into the low pressure
In device.
4. loop heating system according to claim 1, which is characterized in that the low-pressure drum also with high, middle pressure water supply
Pump connection, for providing water source to high, the middle pressure feed pump.
5. a kind of waste heat boiler circular heating method, which is characterized in that added using circulation described in claim 1-4 any one
Hot systems, the method being related to are as follows:
A, the water supply valve and auxiliary steam valve for opening the low-pressure drum, form steam-water mixing in the oxygen-eliminating device, to described
Low-pressure drum heating and deoxygenation；
B, after the water level of the low-pressure drum reaches preset water level, second valve is closed, first valve is opened, opens
The condensation water heater recirculation pump is moved, continuous steam-water mixing is formed and carries out circulating-heating；
C, when the low-pressure drum water temperature reaches on preset temperature and height, middle pressure drum after water, first valve is closed
Door opens second valve, terminates the circulating-heating to the low-pressure drum, the condensation water heater recirculation pump is to institute
State condensation water heater Hybrid Heating.
6. circular heating method according to claim 5, which is characterized in that in step, the water in the low-pressure drum
From the condensation water heater, the auxiliary steam carries out multiple circulating-heating to the water in the condensation water heater
Form saturated water.
7. circular heating method according to claim 5, which is characterized in that in stepb, second valve is closed,
After opening first valve, the water in the low pressure evaporator flows into the condensation water heater recirculation pump, through condensed water
It is flowed into after heater in the oxygen-eliminating device and is mixed with the auxiliary steam.
8. circular heating method according to claim 5, which is characterized in that in step C, the condensation water heater is again
Circulating pump includes: the high-temperature water of the condensation water heater outlet through the condensed water to the condensation water heater Hybrid Heating
The entrance that heater recirculation pump is delivered to the condensation water heater is mixed with condensed water, improves the temperature of condensation water heater
Degree.
9. circular heating method according to claim 8, which is characterized in that the saturated water isolated in the low-pressure drum
Heat absorption forms steam water interface after into the low pressure evaporator, is returned in the low-pressure drum by density contrast.
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| CN201610652722.4A CN106287654B (en) | 2016-08-10 | 2016-08-10 | A kind of waste heat boiler loop heating system and method |
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| CN109442372B (en) * | 2018-11-14 | 2024-03-08 | 东方菱日锅炉有限公司 | Waste heat boiler water circulation system with auxiliary steam |
| US11859811B2 (en) | 2021-03-09 | 2024-01-02 | The Cleaver-Brooks Company, Inc. | Auxiliary boiler systems and methods of operating and implementing same |
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| JPH01113507A (en) * | 1987-10-26 | 1989-05-02 | Toshiba Corp | Exhaust heat recovering heat exchanger |
| CN102563611A (en) * | 2011-12-13 | 2012-07-11 | 浙江西子联合工程有限公司 | Self-deoxygenation-type waste heat power generating system and power generating method thereof |
| CN103017555A (en) * | 2012-12-21 | 2013-04-03 | 江苏永钢集团有限公司 | Boiler steam-water system for use in residual heat utilization of lime kiln |
| CN103727514A (en) * | 2013-12-14 | 2014-04-16 | 蚌埠玻璃工业设计研究院 | Exhaust gas temperature adjusting device of waste heat power generation boiler of glass kiln |
| CN203687652U (en) * | 2013-12-24 | 2014-07-02 | 四川省达州钢铁集团有限责任公司 | Coke oven flue gas waste-heat utilization system |
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2016
- 2016-08-10 CN CN201610652722.4A patent/CN106287654B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01113507A (en) * | 1987-10-26 | 1989-05-02 | Toshiba Corp | Exhaust heat recovering heat exchanger |
| CN102563611A (en) * | 2011-12-13 | 2012-07-11 | 浙江西子联合工程有限公司 | Self-deoxygenation-type waste heat power generating system and power generating method thereof |
| CN103017555A (en) * | 2012-12-21 | 2013-04-03 | 江苏永钢集团有限公司 | Boiler steam-water system for use in residual heat utilization of lime kiln |
| CN103727514A (en) * | 2013-12-14 | 2014-04-16 | 蚌埠玻璃工业设计研究院 | Exhaust gas temperature adjusting device of waste heat power generation boiler of glass kiln |
| CN203687652U (en) * | 2013-12-24 | 2014-07-02 | 四川省达州钢铁集团有限责任公司 | Coke oven flue gas waste-heat utilization system |
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| CN106287654A (en) | 2017-01-04 |
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