CN208778051U - Double pressure gas boilers - Google Patents

Double pressure gas boilers Download PDF

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Publication number
CN208778051U
CN208778051U CN201820669584.5U CN201820669584U CN208778051U CN 208778051 U CN208778051 U CN 208778051U CN 201820669584 U CN201820669584 U CN 201820669584U CN 208778051 U CN208778051 U CN 208778051U
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China
Prior art keywords
pressure
pipeline
low
water
drum
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CN201820669584.5U
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Chinese (zh)
Inventor
宋宜清
王慧红
张羽
单琪
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Beijing Kechuang Technology Park Ltd By Share Ltd
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Beijing Kechuang Technology Park Ltd By Share Ltd
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Abstract

The utility model discloses double pressure gas boilers, including steam turbine, the steam turbine is connected with generator, and the steam drain of steam turbine is connected with condenser by pipeline, the top of the condenser is connected with demineralized water small pump by pipeline, the utility model is connected with higher-pressure deaerator by pipeline on the top of low pressure drum, after the water of high pressure drum is heated by water-cooling wall natural cycle system, after steam water interface, send high pressure drum back to again, steam water interface carries out steam-water separation in high pressure drum, saturated vapor is sent to high pressure low temperature superheater, and the water being separated falls into high pressure drum as furnace water, it is again supplied to the circulatory system, convenient under the premise of not influencing Boiler Operation, boiler exhaust gas is further decreased, when solving using double pressure gas boilers, gas boiler Turbo-generator Set is difficult to adapt to coal gas The operational mode of boiler, utilization efficiency is low, the high problem of cost of electricity-generating.

Description

Double pressure gas boilers
Technical field
The utility model belongs to gas boiler technical field, and in particular to double pressure gas boilers.
Background technique
In order to recycle iron and steel enterprise's coal gas more than needed, coal gas is recycled into heat by boiler and generates superheated steam, is used for Turbo-generator Set power generation, has not only saved the energy, has reduced energy consumption, reduced the discharge amount of greenhouse gases, can also effectively change The ambient air quality of kind plant area, obvious environment benefit.
But gas boiler device currently on the market still has certain defect during use, for example, coal Gas power generation mostly uses greatly single pressure gas boiler configuration Turbo-generator Set, single that gas boiler is pressed to configure Turbo-generator Set, boiler The thermal efficiency is lower, and exhaust gas temperature is excessively high, it is difficult to guarantee that Turbo-generator Set adapts to the operational mode of gas boiler, boiler row Smoke temperature degree is high (135 DEG C), causes the defect that cost is excessively high.
Utility model content
The purpose of this utility model is to provide double pressure gas boilers, to solve coal gas pot mentioned above in the background art Furnace boiler exhaust gas is excessively high, it is difficult to guarantee that Turbo-generator Set adapts to the operational mode of gas boiler, utilization efficiency is low, cost of electricity-generating High problem.
To achieve the above object, the utility model provides the following technical solutions: double pressure gas boilers, including steam turbine, institute It states steam turbine and is connected with generator, and the steam drain of steam turbine is connected with condenser by pipeline, the top of the condenser is logical Piping is connected with demineralized water small pump, and the top of the demineralized water small pump is connected with sweet-water tank by pipeline, described cold The circulating water outlet of condenser connects two grade cooling towers by pipeline, and two grade cooling tower lower part pond is connected with by pipeline to be followed The import of ring cooling water pump, the circulating cooling water pump is connected with condenser by pipeline, and the hot well of the condenser passes through pipe Road is connected with condensate pump, and the side of the condensate pump is connected with low-pressure heater by pipeline, the low-pressure heater Top is connected with steam turbine by pipeline, and the side of the low-pressure heater is connected with low-pressure coal saver by pipeline, described low That presses economizer is equipped with circulating line into low pressure tedge, and the circulating line is provided with regulating valve, and the low pressure saves coal The side of device is connected with low pressure evaporator by pipeline, the top of the low pressure evaporator be provided with and, the top of the sum is equal Connect with low pressure drum, the top of the low pressure drum is connected with higher-pressure deaerator, and the top of the higher-pressure deaerator is connected with Adapter tube, the top of the connecting tube are fixedly connected with low-pressure section combined muffler, and the low pressure drum is connected by pipeline It is connected to high pressure water pump, the top of the high pressure water pump is connected with high-pressure economizer by water pump pipeline, and the high pressure saves coal The top of device is connected with high pressure drum by pipeline, and the high pressure drum is provided with pipe, and the high pressure drum tube water cooling is described The side of high pressure drum is connected with high pressure low temperature superheater by pipeline, and the top of the high pressure low temperature superheater is connected by pipeline It is connected to attemperator, the side of the attemperator is connect by pipeline with water pump pipeline, and attemperator is connected with high pressure by pipeline High temperature superheater, the high pressure-temperature superheater connect high-pressure section combined muffler, the high pressure-temperature by pipeline The side of superheater is connect by pipeline with steam turbine.
Preferably, the high pressure-temperature super-heater exit case connects high-pressure section combined muffler by safety valve.
Preferably, the higher-pressure deaerator connects low-pressure section combined muffler by safety valve.
Preferably, the demineralized water small pump and the design of sweet-water tank overall skid-mounted.
Compared with prior art, the utility model has the beneficial effects that
(1) the utility model is connected with higher-pressure deaerator by pipeline on the top of low pressure drum, and the water of high pressure drum is logical After crossing the heating of water-cooling wall natural cycle system, after becoming steam water interface, then high pressure drum is sent back to, steam water interface is in pressure cooker Steam-water separation is carried out in cylinder, saturated vapor is sent to high pressure low temperature superheater, and the water being separated falls into high pressure as furnace water Drum is again supplied to the circulatory system, convenient under the premise of not influencing Boiler Operation, boiler exhaust gas is further dropped It is low, it can guarantee that Turbo-generator Set adapts to the operational mode of gas boiler, when solving using double pressure gas boilers, coal gas pot Furnace Turbo-generator Set is difficult to adapt to the operational mode of gas boiler, and utilization efficiency is low, the high problem of cost of electricity-generating.
(2) the utility model is provided with low-pressure section combined muffler on the top of low pressure drum, and low pressure drum passes through Pipeline with safety valve is connect with low-pressure section combined muffler, while the top of high pressure-temperature superheater is connected by pipeline It is connected to high-pressure section combined muffler, when solving using double pressure gas boilers, low pressure is not respectively set for double pressure gas boilers Part combined muffler and high-pressure section combined muffler influence double pressure gas boilers problem excessive using noise.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model;
Fig. 2 is the circulating line structural schematic diagram of the utility model;
Fig. 3 is the high pressure barrel structure schematic diagram of the utility model;
In figure: 1- steam turbine;2- generator;3 condensers;4- condensate pump;5- low-pressure heater;6- low-pressure coal saver; 7- higher-pressure deaerator;8- low pressure drum;9- low pressure evaporator;10- high pressure water pump;11- high-pressure economizer;12- high pressure drum; 13- water-cooling wall;14- high pressure low temperature superheater;15- attemperator;16- high pressure-temperature superheater;17- low-pressure section combined type noise reduction Device;18- high-pressure section combined muffler;Bis- grade cooling tower of 19-;20- circulating cooling water pump;21- sweet-water tank;22- desalination Water small pump;23- bypass valve;24- circulating line;25- low pressure tedge;26- low pressure down-comer;27- connecting tube;28- Water pump pipeline;29- high pressure drum tedge/down-comer.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.
It please refers to shown in Fig. 1-Fig. 3, the utility model provides a kind of technical solution: double pressure gas boilers, including steam turbine 1, steam turbine 1 is connected with generator 2, and the steam drain of steam turbine 1 is connected with condenser 3 by pipeline, and the top of condenser 3 is logical Piping is connected with demineralized water small pump 22, and the top of demineralized water small pump 22 is connected with sweet-water tank 21 by pipeline, condensation The circulating water outlet of device 3 connects two grade cooling towers 19 by pipeline, and two grade cooling towers, 19 lower part pond is connected with by pipeline to be followed The import of ring cooling water pump 20, circulating cooling water pump 20 is connected with condenser 3 by pipeline, and the hot well of condenser 3 passes through pipeline It is connected with condensate pump 4, the side of condensate pump 4 is connected with low-pressure heater 5 by pipeline, and the top of low-pressure heater 5 is logical Piping is connected with steam turbine 1, and the side of low-pressure heater 5 is connected with low-pressure coal saver 6 by pipeline, low-pressure coal saver 6 It is equipped with circulating line 24 into low pressure tedge, circulating line 24 is provided with regulating valve 23, and the side of low-pressure coal saver 6 passes through Pipeline is connected with low pressure evaporator 9, the top of low pressure evaporator 9 be provided with 26 and 25,26 and 25 top with low pressure drum 8 Even, the top of low pressure drum 8 is connected with higher-pressure deaerator 7, and the top of higher-pressure deaerator 7 is connected with connecting tube 27, connecting tube 27 Top be fixedly connected with low-pressure section combined muffler 17, low pressure drum 8 is connected with high pressure water pump 10 by pipeline, The top of high pressure water pump 10 is connected with high-pressure economizer 11 by water pump pipeline 28, and the top of high-pressure economizer 11 passes through pipeline It is connected with high pressure drum 12, high pressure drum 12 is provided with pipe 29, and the side of 29 water cooling 13 of high pressure drum tube, high pressure drum 12 is logical Piping is connected with high pressure low temperature superheater 14, and the top of high pressure low temperature superheater 14 is connected with attemperator 15 by pipeline, subtracts The side of warm device 15 is connect by pipeline with water pump pipeline 28, and attemperator 15 is connected with high pressure-temperature superheater by pipeline 16, high pressure-temperature superheater 16 by pipeline connect high-pressure section combined muffler 18, the one of high pressure-temperature superheater 16 Side is connect by pipeline with steam turbine 1.
In the present embodiment, it is preferred that 16 outlet header of high pressure-temperature superheater connects high-pressure section by safety valve and combines Formula muffler 18.
In the present embodiment, it is preferred that higher-pressure deaerator 7 connects low-pressure section combined muffler 17 by safety valve.
In the present embodiment, it is preferred that demineralized water small pump 22 and the design of 21 overall skid-mounted of sweet-water tank.
The working principle and process for using of the utility model: by taking steel mill 6MW coal gas power generation project as an example, blast furnace gas is in furnace After chamber inner combustion, after exchanging heat with the water-cooling wall 13 in burner hearth, high pressure-temperature superheater 16, high pressure low temperature overheat are passed sequentially through Device 14, high-pressure economizer 11, low pressure evaporator 8, low-pressure coal saver 6, air preheater heat exchange, temperature are down to 95 DEG C, pass through air-introduced machine It draws, through chimney high altitude discharge.
The outlet of high pressure-temperature superheater 16 generates medium pressure steam (3.9MPa (g)/450 DEG C@21t/h) and pushes steamer hair Electric unit generation, turbine discharge send low-pressure heating through condensate pump 4 by circulating water condensation, condensed water in condenser 3 Device is heated to 70 DEG C, then through low-pressure coal saver 6, removes higher-pressure deaerator 7 after absorbing certain heat, and low pressure cooker is entered after deoxygenation Cylinder 8, the water of low pressure drum 8 is by 26/ tedge 25 of down-comer after 9 natural circulation heating of low pressure evaporator is by high pressure deoxygenation Saturated water remove high pressure water pump 10, after boosting supply high-pressure economizer 11.After high-pressure feed water heats in high-pressure economizer 11 Into high pressure drum 12, after the water of high pressure drum 12 is heated by 13 natural cycle system of water-cooling wall, after becoming steam water interface, Send high pressure drum 12 back to again.Steam water interface carries out steam-water separation in high pressure drum 12, and saturated vapor is sent to high pressure low temperature mistake Hot device 14, and the water being separated falls into high pressure drum 12 as furnace water, is again supplied to the circulatory system.
Saturated vapor removes attemperator 15 after overheating in high pressure low temperature superheater 14.High pressure water pump 10 is exported to attemperator 15 provide desuperheating water, and high pressure superheated steam is made to reach set temperature.
It is further overheated in high pressure-temperature superheater 16 by the superheated steam of desuperheat, reaches the height of set temperature Steam is pressed, steam turbine is sent to steam as power generation, completes a cyclic process.
The demineralized water come from desalted water station enters sweet-water tank 21, fills into 3 vacuum of condenser by demineralized water small pump 22 Boiler feedwater is used as after deoxygenation.
Heating steam needed for low-pressure heater 5 comes from 1 low-pressure pumping steam of steam turbine, guarantees 6 inlet water temperature of low-pressure coal saver not Lower than 70 DEG C.
The low-temperature flue gas come out from low-pressure coal saver 6 goes air preheater for heating air.
The bypass valve 23 of low-pressure coal saver 6 is used to adjust the water flow of low-pressure coal saver, for guaranteeing low-pressure heating Device exit gas temperature is not less than 90 DEG C.
While there has been shown and described that the embodiment of utility model for the ordinary skill in the art can These embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit with understanding, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (4)

1. pair pressure gas boiler, including steam turbine (1), it is characterised in that: the steam turbine (1) is connected with generator (2), and vapour The steam drain of turbine (1) is connected with condenser (3) by pipeline, and the top of the condenser (3) is connected with desalination by pipeline The top of water small pump (22), the demineralized water small pump (22) is connected with sweet-water tank (21), the condenser by pipeline (3) circulating water outlet connects two grade cooling towers (19) by pipeline, and two grade cooling tower (19) the lower part pond passes through pipeline It is connected with circulating cooling water pump (20), the import of the circulating cooling water pump (20) is connected with condenser (3) by pipeline, described The hot well of condenser (3) is connected with condensate pump (4) by pipeline, and the side of the condensate pump (4) is connected with by pipeline The top of low-pressure heater (5), the low-pressure heater (5) is connected with steam turbine (1), the low-pressure heater by pipeline (5) side is connected with low-pressure coal saver (6) by pipeline, and being equipped with into low pressure tedge for the low-pressure coal saver (6) follows Endless tube road (24), the circulating line (24) are provided with regulating valve (23), and the side of the low-pressure coal saver (6) passes through pipeline It is connected with low pressure evaporator (9), the top of the low pressure evaporator (9) is provided with (26) and (25), (26) and (25) Top connects with low pressure drum (8), and the top of the low pressure drum (8) is connected with higher-pressure deaerator (7), the higher-pressure deaerator (7) top is connected with connecting tube (27), and the top and low-pressure section combined muffler (17) of the connecting tube (27) are fixed Connection, the low pressure drum (8) are connected with high pressure water pump (10) by pipeline, and the top of the high pressure water pump (10) is logical It crosses water pump pipeline (28) to be connected with high-pressure economizer (11), the top of the high-pressure economizer (11) is connected with high pressure by pipeline Drum (12), the high pressure drum (12) are provided with pipe (29), high pressure drum tube (29) water cooling (13), the pressure cooker The side of cylinder (12) is connected with high pressure low temperature superheater (14) by pipeline, and the top of the high pressure low temperature superheater (14) passes through Pipeline is connected with attemperator (15), and the side of the attemperator (15) is connect by pipeline with water pump pipeline (28), and attemperator (15) it is connected with high pressure-temperature superheater (16) by pipeline, the high pressure-temperature superheater (16) connects high pressure by pipeline The side of part combined muffler (18), the high pressure-temperature superheater (16) is connect by pipeline with steam turbine (1).
2. double pressure gas boilers according to claim 1, it is characterised in that: high pressure-temperature superheater (16) outlet collection Case connects high-pressure section combined muffler (18) by safety valve.
3. double pressure gas boilers according to claim 1, it is characterised in that: the higher-pressure deaerator (7) passes through safety valve It connects low-pressure section combined muffler (17).
4. double pressure gas boilers according to claim 1, it is characterised in that: the demineralized water small pump (22) and demineralized water The design of case (21) overall skid-mounted.
CN201820669584.5U 2018-05-07 2018-05-07 Double pressure gas boilers Active CN208778051U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820669584.5U CN208778051U (en) 2018-05-07 2018-05-07 Double pressure gas boilers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820669584.5U CN208778051U (en) 2018-05-07 2018-05-07 Double pressure gas boilers

Publications (1)

Publication Number Publication Date
CN208778051U true CN208778051U (en) 2019-04-23

Family

ID=66148270

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201820669584.5U Active CN208778051U (en) 2018-05-07 2018-05-07 Double pressure gas boilers

Country Status (1)

Country Link
CN (1) CN208778051U (en)

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Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Two pressure gas boiler

Effective date of registration: 20200409

Granted publication date: 20190423

Pledgee: Beijing technology intellectual property financing Company limited by guarantee

Pledgor: BEIJING ZHONGKE INNOVATION PARK TECHNOLOGY Co.,Ltd.

Registration number: Y2020990000295

PC01 Cancellation of the registration of the contract for pledge of patent right
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20210415

Granted publication date: 20190423

Pledgee: Beijing technology intellectual property financing Company limited by guarantee

Pledgor: BEIJING ZHONGKE INNOVATION PARK TECHNOLOGY Co.,Ltd.

Registration number: Y2020990000295