CN105180143A - Waste steam recovery device and system for circulating fluidized bed boiler - Google Patents
Waste steam recovery device and system for circulating fluidized bed boiler Download PDFInfo
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- CN105180143A CN105180143A CN201510494654.9A CN201510494654A CN105180143A CN 105180143 A CN105180143 A CN 105180143A CN 201510494654 A CN201510494654 A CN 201510494654A CN 105180143 A CN105180143 A CN 105180143A
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- exhaust steam
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Abstract
The invention relates to the field of energy conservation, and discloses a waste steam recovery device and system for a circulating fluidized bed boiler. The waste steam recovery device comprises a cooling water supply device (1) used for providing cooling water, a waste steam collecting device (2) used for collecting and providing waste steam, and an absorbing device (3) connected with the cooling water supply device (1) and the waste steam collecting device (2) and used for receiving cooling water and waste steam, so that the cooling water and the waste steam make fully contact with the absorbing device (3) to complete heat exchange, and heat energy of the waste steam is absorbed. The exhausted waste steam can be fully recycled, heat energy losses and waste of water resources are reduced, economic value is improved, and the aim of resource utilization is achieved.
Description
Technical field
The present invention relates to energy-saving field, particularly, relate to a kind of exhaust steam recovery equipment for circulating fluidized bed boiler and a kind of dead steam recovery system for CFBB.
Background technology
In China, Coal Chemical Industry constantly makes a breakthrough in technology and equipment, progressively define based on advanced Coal Gasification Technology, produce derived energy chemical industry---the Modern Coal-based Chemical with petroleum replacing chemical products and oil gas product, comprise the novel energy chemical industrial chains such as coal preparing natural gas, coal liquifaction, coal-ethylene glycol, ammonia from coal and downstream olefin product.But, because Modern Coal-based Chemical industry is at the early-stage, be in the demonstration phase, make the first commercialization of most core technology, technological process and Integration ofTechnology wait to optimize, and engineering problem need further solution, still has the leeway of improving further in efficiency level and pollutant emission.
Coal Chemical Industry thermo-power station is all CFBB mostly, is made up of five unit: boiler unit, steam turbine unit, electrical system, chemical water unit, flue gas desulfurization unit.The stove water that CFBB exhaust steam is mainly discharged after boiler periodical blowdown and continuous blowdown, water quality is fine, can be used as recirculated water and be used after recovery.
Exhaust steam enters into by high-temperature water with pressure the minute-pressure steam that the container back warp flash distillation lower than its pressure produce later, or the steam of certain pressure used after its pressure and temperature be all reduced to get back in system and utilize, only have and sky discharged.Although these two kinds of steam are difficult to get back in system with the state of steam utilize again, a large amount of energy (heat energy and water resource) can be wasted if drained, and " Bai Long " that formed can cause serious thermal pollution to environment.From measurement data, although the pressure difference of steam is very large, the difference of its heat enthalpy value is very little.
Exactly because the heat that exhaust steam is contained is huge, we will extremely treasure, Appropriate application.If adopt the exhaust steam (stripping) that steam jet ejector high steam adherence pressure is very low, a large amount of high-quality steam need be consumed.The quality of middle pressure steam declines, and a large amount of low-pressure steams does not find a place where one uses one's talents, and causes the waste of a large amount of heat energy and water resource.
Summary of the invention
The object of this invention is to provide a kind of exhaust steam recovery equipment for circulating fluidized bed boiler and a kind of dead steam recovery system for CFBB, can fully reclaim emptying exhaust steam, reduce heat-energy losses and the waste to water resource, improve economic worth, reach the object of recycling.
To achieve these goals, the invention provides a kind of exhaust steam recovery equipment for CFBB, described exhaust steam recovery equipment comprises: apparatus for supplying cool water, for providing cooling water; Exhaust steam aggregation apparatus, for assembling and providing exhaust steam; And absorption plant, be connected with described apparatus for supplying cool water and described exhaust steam aggregation apparatus, for receiving described cooling water and described exhaust steam, to make described cooling water fully contact heat exchange with described exhaust steam in described absorption plant, thus absorb the heat energy of described exhaust steam.
The present invention also provides a kind of dead steam recovery system for CFBB, and described system comprises: the exhaust steam recovery equipment for CFBB mentioned above; And control device, be connected with described exhaust steam recovery equipment, for controlling described exhaust steam recovery equipment.
Adopt the exhaust steam recovery equipment for CFBB provided by the invention and the dead steam recovery system for CFBB, apparatus for supplying cool water is used to provide cooling water, exhaust steam aggregation apparatus is used to assemble and provide exhaust steam, cooling water and exhaust steam are delivered to the absorption plant be connected with apparatus for supplying cool water and exhaust steam aggregation apparatus, to make cooling water fully contact heat exchange with exhaust steam in absorption plant, thus absorb the heat energy of exhaust steam.The present invention can fully reclaim emptying exhaust steam, reduces heat-energy losses and the waste to water resource, improves economic worth, reaches the object of recycling.
Other features and advantages of the present invention are described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for description, is used from explanation the present invention, but is not construed as limiting the invention with detailed description of the invention one below.In the accompanying drawings:
Fig. 1 is the syndeton schematic diagram of the exhaust steam recovery equipment for CFBB provided by the invention; And
Fig. 2 is the syndeton schematic diagram of the exhaust steam recovery equipment for CFBB that an embodiment of the present invention provides.
Description of reference numerals
1 apparatus for supplying cool water 2 exhaust steam aggregation apparatus
3 absorption plant 4 exhaust steam injectors
Film absorber is revolved in 5 skinning rooms 61
62 film pipe absorber 7 gas-liquid separation devices
8 guiding device 9 water pipes
10 gas-liquid cancellation element 11 water pumps
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
Fig. 1 is the syndeton schematic diagram of the exhaust steam recovery equipment for CFBB provided by the invention.As shown in Figure 1, a kind of exhaust steam recovery equipment for CFBB comprises: apparatus for supplying cool water 1, for providing cooling water; Exhaust steam aggregation apparatus 2, for assembling and providing exhaust steam; And absorption plant 3, be connected with described apparatus for supplying cool water 1 and described exhaust steam aggregation apparatus 2, for receiving described cooling water and described exhaust steam, to make described cooling water fully contact heat exchange with described exhaust steam in described absorption plant 3, thus absorb the heat energy of described exhaust steam.
The flowing of cooling water and exhaust steam can be the mode of two kinds of move counter-current: apparatus for supplying cool water 1 provides cooling water, and cooling water first enters absorption plant 3 by water inlet (not drawing), and walks toward absorption plant bottom.Exhaust steam enters absorption plant 3 by air intake (not drawing), and adverse current up walks to enter absorption plant 3 and cooling water carries out phase-change heat-exchange absorption, and final exhaust steam is all absorbed.
Fig. 2 is the syndeton schematic diagram of the exhaust steam recovery equipment for CFBB that an embodiment of the present invention provides.As shown in Figure 2, this exhaust steam recovery equipment can also comprise with lower device: exhaust steam injector 4, skinning room 5, revolve film absorber 61, film pipe absorber 62, gas-liquid separation device 7, guiding device 8, water pipe 9, cavitation cancellation element 10, stable-pressure device (not drawing), decontamination apparatus (not drawing) and water pump 11, wherein, exhaust steam injector 4 is connected with described exhaust steam aggregation apparatus 2, for providing power by exhaust steam injection to described absorption plant 3; Skinning room 5 is connected between described absorption plant 3 and described apparatus for supplying cool water 1, forms moisture film group for being broken up by cooling water; Revolve film absorber 61 and film pipe absorber 62 is connected between described gas-liquid separation device 7 and described absorption plant 3, for the exhaust steam be not liquefied secondary is condensed into water; Gas-liquid separation device 7 for by undergone phase transition by the cooling water that heats and exhaust steam the water be liquefied as the mixing water that formed be separated with the exhaust steam be not liquefied; Guiding device 8 is connected with described gas-liquid separation device 7, for importing in water pipe 9 by isolated for described gas-liquid separation device 7 described mixing water; Cavitation cancellation element 10 is installed in described water pipe 9, for eliminating cavitation phenomenons existing in described mixing water; Water pump 11 is connected with described water pipe 9, for described mixing water is delivered to hot water user.
In order to enable cooling water fully mix with exhaust steam, adopt skinning room 5 to be broken up by cooling water and form moisture film group, cooling water enters absorption plant with the form of moisture film group and fully can contact with exhaust steam, improves the efficiency of heat exchange.
But, although taked above-mentioned measure to make cooling water fully contact with exhaust steam as far as possible, still have some exhaust steam do not carry out heat exchange with cooling water or fully do not carry out heat exchange, therefore adopt and revolve film absorber 61 and the exhaust steam secondary be not liquefied is condensed into water by film pipe absorber 62, by revolving film absorber 61 and film pipe absorber 62 can be lowered the temperature again for the exhaust steam not carrying out sufficient heat exchange with cooling water.
When exhaust steam and cooling water carry out heat exchange in absorption plant 3, and by after revolving film absorber 61 and film pipe absorber 62 and again lowering the temperature, can by gas-liquid separation device 7, by undergone phase transition by the cooling water that heats and exhaust steam the water be liquefied as the mixing water that formed be separated with the exhaust steam be not liquefied.The gas be liquefied not yet after separation is discharged by exhaust outlet (not drawing), and be separated by undergone phase transition by the cooling water that heats and exhaust steam the water be liquefied as the mixing water that formed will continue through guiding device 8 mixing water will be imported in water pipe 9.
Cavitation cancellation element 10 is installed in water pipe 9, can eliminate cavitation phenomenons existing in described mixing water.Stable-pressure device (not drawing) and decontamination apparatus (not drawing) can also be comprised in water pipe 9, the stable water pressure in described water pipe can be ensured and the pollutant component removed in mixing water.
In addition, the exhaust steam recovery equipment for CFBB can also comprise collecting container (not drawing), is connected with water pipe 9, for storing mixing water.Water pump 11 can be connected with water pipe 9 or be connected with this collecting container when having collecting container, for mixing water is delivered to hot water user.
As described above, cooling water can be desalted water, uses the reason of desalted water to be because the mixing water after being mixed with exhaust steam by desalted water can directly recycle, does not need to carry out other process again.
To sum up, when only discharging the gas that small part does not liquefy, comparatively take full advantage of heat energy and the water resource of exhaust steam, and carried out the operations such as anti-cavitation, decompression and scrubbing, the final hot water transformed can be used for user to use, and makes resource be able to regeneration.
The present invention also provides a kind of dead steam recovery system for CFBB, and this dead steam recovery system comprises the exhaust steam recovery equipment for CFBB mentioned above; And control device, be connected with described exhaust steam recovery equipment, for controlling described exhaust steam recovery equipment.Wherein said control device comprises: expansion control interface, for receiving remote control commands; Local control interface, for receiving local control instruction; And controller, for according to described remote control commands or local control instruction, control the operation of described exhaust steam recovery equipment.
This dead steam recovery system can receive the step-less adjustment of carrying out from the control of the on-off model of DCS control system or the analog signals of DCS control system, controller can adopt PLC, the operation being completed whole system by program is controlled, and intelligence degree is high.
Adopt the exhaust steam recovery equipment for CFBB provided by the invention and the dead steam recovery system for CFBB, apparatus for supplying cool water is used to provide cooling water, exhaust steam aggregation apparatus is used to assemble and provide exhaust steam, cooling water and exhaust steam are delivered to the absorption plant be connected with apparatus for supplying cool water and exhaust steam aggregation apparatus, to make cooling water fully contact heat exchange with exhaust steam in absorption plant, thus absorb the heat energy of exhaust steam.The present invention can fully reclaim emptying exhaust steam, reduces heat-energy losses and the waste to water resource, improves economic worth, reaches the object of recycling.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each the concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode.In order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible combination.
In addition, also can be combined between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (10)
1. for an exhaust steam recovery equipment for CFBB, it is characterized in that, described exhaust steam recovery equipment comprises:
Apparatus for supplying cool water (1), for providing cooling water;
Exhaust steam aggregation apparatus (2), for assembling and providing exhaust steam; And
Absorption plant (3), be connected with described apparatus for supplying cool water (1) and described exhaust steam aggregation apparatus (2), for receiving described cooling water and described exhaust steam, to make described cooling water fully contact heat exchange with described exhaust steam in described absorption plant (3), thus absorb the heat energy of described exhaust steam.
2. the exhaust steam recovery equipment for CFBB according to claim 1, is characterized in that, described exhaust steam recovery equipment also comprises:
Exhaust steam injector (4), is connected with described exhaust steam aggregation apparatus (2), for providing power by exhaust steam injection to described absorption plant (3).
3. the exhaust steam recovery equipment for CFBB according to claim 1, is characterized in that, described exhaust steam recovery equipment also comprises:
Skinning room (5), is connected between described apparatus for supplying cool water (1) and described absorption plant (3), forms moisture film group for being broken up by cooling water.
4. the exhaust steam recovery equipment for CFBB according to claim 1, is characterized in that, described exhaust steam recovery equipment also comprises:
Gas-liquid separation device (7), for by undergone phase transition by the cooling water that heats and exhaust steam the water be liquefied as the mixing water that formed be separated with the exhaust steam be not liquefied.
5. the exhaust steam recovery equipment for CFBB according to claim 4, is characterized in that, described exhaust steam recovery equipment also comprises:
Revolve film absorber (61) and film pipe absorber (62), be positioned between described absorption plant (3) and described gas-liquid separation device (7), for the exhaust steam be not liquefied secondary is condensed into water.
6. the exhaust steam recovery equipment for CFBB according to claim 4, is characterized in that, described exhaust steam recovery equipment also comprises:
Guiding device (8), is connected with described gas-liquid separation device (7), for being imported in water pipe (9) by isolated for described gas-liquid separation device (7) described mixing water.
7. the exhaust steam recovery equipment for CFBB according to claim 6, is characterized in that, described exhaust steam recovery equipment also comprises:
Cavitation cancellation element (10), is installed in described water pipe (9), for eliminating cavitation phenomenons existing in described mixing water.
8. according to the exhaust steam recovery equipment for CFBB of claim 6, it is characterized in that, described exhaust steam recovery equipment also comprises:
Water pump (11), is connected with described water pipe (9), for described mixing water is delivered to hot water user.
9. for a dead steam recovery system for CFBB, it is characterized in that, described system comprises:
According to the exhaust steam recovery equipment for CFBB in claim 1-8 described in any one claim; And
Control device, is connected with described exhaust steam recovery equipment, for controlling described exhaust steam recovery equipment.
10. the dead steam recovery system for CFBB according to claim 9, is characterized in that, described control device comprises:
Expansion control interface, for receiving remote control commands;
Local control interface, for receiving local control instruction; And
Controller, for according to described remote control commands or local control instruction, controls the operation of described exhaust steam recovery equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510494654.9A CN105180143A (en) | 2015-08-12 | 2015-08-12 | Waste steam recovery device and system for circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510494654.9A CN105180143A (en) | 2015-08-12 | 2015-08-12 | Waste steam recovery device and system for circulating fluidized bed boiler |
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| Publication Number | Publication Date |
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| CN105180143A true CN105180143A (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510494654.9A Pending CN105180143A (en) | 2015-08-12 | 2015-08-12 | Waste steam recovery device and system for circulating fluidized bed boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108844378A (en) * | 2018-05-17 | 2018-11-20 | 广州发展环保建材有限公司 | Steam exhaust liquefaction processing system |
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| JP2001124324A (en) * | 1999-09-13 | 2001-05-11 | Abb Schweiz Ag | Water cooling method for fire box of grating and grating for incinerating solid matter |
| CN101165399A (en) * | 2007-08-07 | 2008-04-23 | 江苏工业学院 | Boiler low grade residual heat combined reclamation method and device |
| CN202432878U (en) * | 2011-12-20 | 2012-09-12 | 东北大学设计研究院（有限公司） | Rotary film device |
| CN203115971U (en) * | 2013-02-04 | 2013-08-07 | 上海建华管桩有限公司 | Boiler continuous blowdown waste heat recovery device used for tubular pile production |
| CN103968366A (en) * | 2014-05-04 | 2014-08-06 | 广州迪森热能技术股份有限公司 | Biomass boiler blow-down waste heat recycling system |
| CN104266170A (en) * | 2014-10-11 | 2015-01-07 | 中国轻工业长沙工程有限公司 | Comprehensive utilization method of thermal power plant boiler wastewater |
| CN204880079U (en) * | 2015-08-12 | 2015-12-16 | 神华集团有限责任公司 | A exhaust steam recovery plant and system for circulating fluidized bed boiler |
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2015
- 2015-08-12 CN CN201510494654.9A patent/CN105180143A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001124324A (en) * | 1999-09-13 | 2001-05-11 | Abb Schweiz Ag | Water cooling method for fire box of grating and grating for incinerating solid matter |
| CN101165399A (en) * | 2007-08-07 | 2008-04-23 | 江苏工业学院 | Boiler low grade residual heat combined reclamation method and device |
| CN202432878U (en) * | 2011-12-20 | 2012-09-12 | 东北大学设计研究院（有限公司） | Rotary film device |
| CN203115971U (en) * | 2013-02-04 | 2013-08-07 | 上海建华管桩有限公司 | Boiler continuous blowdown waste heat recovery device used for tubular pile production |
| CN103968366A (en) * | 2014-05-04 | 2014-08-06 | 广州迪森热能技术股份有限公司 | Biomass boiler blow-down waste heat recycling system |
| CN104266170A (en) * | 2014-10-11 | 2015-01-07 | 中国轻工业长沙工程有限公司 | Comprehensive utilization method of thermal power plant boiler wastewater |
| CN204880079U (en) * | 2015-08-12 | 2015-12-16 | 神华集团有限责任公司 | A exhaust steam recovery plant and system for circulating fluidized bed boiler |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108844378A (en) * | 2018-05-17 | 2018-11-20 | 广州发展环保建材有限公司 | Steam exhaust liquefaction processing system |
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Application publication date: 20151223 |