CN112943394A - System and method for sludge drying and incineration coupled gas-steam combined cycle unit - Google Patents
System and method for sludge drying and incineration coupled gas-steam combined cycle unit Download PDFInfo
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- CN112943394A CN112943394A CN202110288389.4A CN202110288389A CN112943394A CN 112943394 A CN112943394 A CN 112943394A CN 202110288389 A CN202110288389 A CN 202110288389A CN 112943394 A CN112943394 A CN 112943394A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/003—Arrangements for measuring or testing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/02—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
- F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
- F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
- F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
- F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
- F01K23/103—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle with afterburner in exhaust boiler
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention belongs to the technical field of solid waste treatment, and particularly relates to a system and a method for a sludge drying and incineration coupled gas-steam combined cycle unit. The invention can save the occupied area of sludge drying incineration, reduce the investment and the operation cost of the sludge drying incineration, reduce the consumption of primary energy, realize the cyclic utilization of working media, reduce repeated construction and have good economic benefit.
Description
Technical Field
The invention belongs to the technical field of solid waste treatment, and particularly relates to a system and a method for a sludge drying and incineration coupled gas-steam combined cycle unit.
Background
According to technical policies (trial implementation) of sludge treatment and disposal and pollution prevention and control in urban sewage treatment plants, the sludge treatment and disposal realizes reduction, stabilization and harmlessness of sludge on the premise of safety, environmental protection and economy, achieves the purposes of energy conservation, emission reduction and development of recycling economy, and encourages recovery and utilization of energy and resources in the sludge in the process. The sludge treatment is sequentially carried out by various treatment methods such as marine abandonment, land landfill, composting, drying, incineration and the like, the sludge drying incineration technology has great progress along with the continuous optimization of the drying technology and the incineration technology and the maturity of the technology, and the technology has typical engineering application at home and abroad. Technical policy (trial) of sludge treatment and disposal and pollution prevention and control in urban sewage treatment plants suggests that in large and medium-sized cities with developed economy, a sludge incineration process can be adopted, and a combined drying and incineration mode is encouraged to be adopted, so that the heat energy utilization efficiency of sludge is improved. The sludge drying incineration technology can treat a large amount of sludge in a short time and can recover incineration heat, is an efficient technical means for sludge disposal at present, but the independent sludge drying incineration faces the problem of higher construction and operation cost due to lower sludge heat value.
When the sludge is independently incinerated, the water content of the sludge after mechanical dehydration from a sewage treatment plant is as high as about 80%, the sludge does not have a heat value and can not be combusted, the sludge can be combusted after being dried, and the sludge is mostly incinerated and dried by adopting a heat drying mode, namely the sludge is heated and dried by using steam generated when the sludge is incinerated to recover waste heat. When the self calorific value of the sludge is lower, the steam generated by sludge incineration can not meet the requirement of drying steam of the sludge, and at the moment, the steam needs to be supplemented, and two modes can be generally adopted: (1) adding a natural gas combustion-supporting boiler, wherein insufficient steam is supplemented by the natural gas combustion-supporting boiler; and (2) when the conditions exist, supplementing steam by using the heat supply steam of the plant area.
The sludge incineration requires that the combustion temperature in the hearth is above 850 ℃ and the retention time of high-temperature flue gas in the hearth is not less than 2s, natural gas needs to be combusted for starting and combustion supporting in the starting stage and the low-load stage, the external natural gas in the plant needs to be subjected to module processing such as metering analysis, cyclone dust removal, filtration, pressure regulation and the like after entering the plant, a special pressure regulating station area is arranged, and the module is high in investment and operation cost.
The odor generated by sludge drying and incineration is divided into three types according to different sources and odor concentration: high concentration odor, medium concentration odor, and low concentration odor. The gas carried by the drier and the odor of the scraper for conveying the dried sludge belong to high-concentration odor, and the gas is collected in a centralized manner and then conveyed to a sludge incinerator for incineration; the odor collected by a sludge receiving bin, a sludge storage bin and a drying chamber channel of a material system is the odor with medium concentration, and the calculated amount of the odor in the part is about 25000m3/h according to the arrangement condition of a certain project and the designed ventilation times when the sludge with 80% of water enters the plant is 800 t/d; the material system sludge drying room, the unloading hall, the receiving room and other rooms need to keep micro negative pressure, mechanical air exhaust is adopted, the collected odor is low-concentration odor, and the amount of the low-concentration odor is about 95000m3/h according to the arrangement condition of a certain project and the designed air exchange times when the sludge with 80% of water enters the plant is 800 t/d. The total air volume of the middle-concentration odor and the low-concentration odor is larger, the occupied area of the device for treating the part of odor is larger, and the cost is higher.
Disclosure of Invention
The invention aims to solve the problems of high energy consumption, high cost and no consideration of energy recovery in the prior art, and provides a system and a method for coupling sludge drying and incineration with a gas-steam combined cycle unit.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a system of a sludge drying and incineration coupled gas and steam combined cycle unit comprises:
the gas supply unit supplies natural gas to the sludge incinerator and the gas-steam combined cycle unit respectively;
the sludge drying unit is used for drying sludge by using steam of the sludge incinerator and heat supply steam of the gas-steam combined cycle unit, and simultaneously delivering condensed water obtained after sludge drying to a condensed water system of the gas-steam combined cycle unit and a sludge incineration water supply system respectively;
and the gas collecting unit is used for collecting the gas of the sludge drying unit and sending the collected gas into a combustion chamber of the gas-steam combined cycle unit.
Preferably, the natural gas of the gas supply unit sequentially passes through the inlet module, the metering chromatographic analysis module, the cyclone separation module and the fine filtering module and then respectively enters the sludge incinerator and the gas-steam combined cycle unit through the pressure regulating module.
Preferably, the sludge drying unit comprises a sludge drying machine, the sludge drying machine receives wet sludge from a wet sludge bin through a sludge pump, the wet sludge is dried by using heating steam of the sludge incinerator steam and the gas-steam combined cycle unit, dried dry sludge enters the sludge incinerator through a dry sludge bin, and dried condensed water is respectively sent to a gas turbine area condensed water system and a sludge incineration water supply system through a condensed water tank.
Preferably, the gas-steam combined cycle unit comprises a gas turbine and a steam turbine which are connected with the generator, and further comprises a gas compressor connected with air, a combustion chamber connected with natural gas and a waste heat boiler arranged between the gas turbine and the steam turbine.
Preferably, the gas collection unit is connected with a sludge discharge room, a sludge receiving bin, a sludge receiving room, a sludge storage room and an exhaust system of the drying machine room of the sludge drying unit, and the gas collection unit sends the collected gas into the combustion chamber through the gas compressor.
Preferably, the system further comprises an auxiliary unit, wherein the auxiliary unit comprises an electricity, rainwater, fire protection and circulating water system which are arranged in a coupling mode.
A method for coupling sludge drying and incineration with a fuel gas and steam combined cycle unit comprises the following steps:
(1) coupling the heating steam of the sludge drying unit and the dried condensed water with a gas-steam combined cycle unit;
(2) coupling natural gas for sludge drying and incineration and natural gas for a gas-steam combined cycle unit;
(3) the medium-concentration odor and the low-concentration odor of the sludge drying unit are coupled with the air for combustion of the gas-steam combined cycle unit.
Preferably, in the step (1), insufficient steam of the sludge drying unit is provided by heating steam of the combustion engine area, and redundant condensed water of the sludge drying unit is sent to a condensed water system of the gas-steam combined cycle unit.
Preferably, the natural gas in the step (2) is uniformly metered and filtered, and then enters the sludge incinerator and the gas-steam combined cycle unit corresponding to the natural gas respectively through the two pressure regulating modules.
Preferably, the medium-concentration odor and the low-concentration odor of the sludge drying unit in the step (3) enter a compressor of the gas-steam combined cycle unit together with air, and are sent to a combustion chamber through the compressor for combustion.
After the technical scheme is adopted, the system and the method for the sludge drying and incineration coupled gas-steam combined cycle unit have the following beneficial effects:
1) the invention has good economic benefit, when the sludge drying external steam supply is calculated according to 13t/h, about 10.4 ten thousand tons of condensed water are correspondingly recovered per year, the part is converted into the cost of the desalted water, and the annual operating cost can be saved by about 50 ten thousand yuan; the natural gas for sludge incineration is coupled with the natural gas for the gas-steam combined cycle unit and is led out from a pressure regulating station of the gas-steam combined cycle unit, the price of the natural gas can be directly settled according to the gas price for the gas-steam combined cycle unit, and the natural gas treatment part module is shared, when the natural gas consumption of the sludge incinerator is calculated according to 2000Nm3/h, the investment cost can be saved by about 50 ten thousand, and in addition, the annual operating cost can be saved by 10 ten thousand yuan; the medium-concentration odor and the low-concentration odor in the sludge drying and incinerating area are directly introduced to a gas compressor of the gas turbine steam combined cycle unit without treatment, and the air volume is calculated according to 120000m3/h, so that the investment cost can be saved by about 400 ten thousand, and the annual operating cost can be saved by about 70 ten thousand yuan;
2) the invention reduces the floor area, and saves the floor area of facilities such as a starting boiler, a pressure regulating station, an odor treatment device and the like after adopting the coupling scheme;
3) according to the invention, primary energy can be saved, and after the coupling scheme is adopted, insufficient sludge drying steam is provided by the heating steam of the gas-steam combined cycle unit, so that the consumption of primary energy natural gas is reduced;
4) the invention can save investment and operating cost by the coupling arrangement of other auxiliary units (such as systems of electricity utilization, rainwater, fire protection, circulating water and the like).
Therefore, the invention can reduce the investment and the operation cost of sludge drying incineration, save the occupied area, improve the energy utilization rate and have good economic benefit.
Drawings
FIG. 1 is a flow chart of a sludge drying and incinerating system;
FIG. 2 is a flow diagram of a gas steam combined cycle plant;
FIG. 3 is a flow chart of a steam trap system coupling using the present invention;
FIG. 4 is a flow diagram of a natural gas system coupling employing the present invention;
fig. 5 is a flow chart of the coupling of the odor system using the present invention.
Detailed Description
The present invention now will be described more fully hereinafter with reference to the accompanying drawings and detailed description, in which it is to be understood that the embodiments described are merely illustrative of some, but not all embodiments of the invention. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
The system for coupling sludge drying and incineration with the gas-steam combined cycle unit provided by the invention fully utilizes the relevant parts of the two systems of the sludge drying and incineration system shown in figure 1 and the gas-steam combined cycle unit shown in figure 2 to couple, and comprises a gas supply unit, a sludge drying unit and a gas collection unit as shown in figures 3-5.
The gas supply unit supplies natural gas to sludge incinerator and gas steam combined cycle unit respectively, and is concrete, the natural gas of gas supply unit gets into sludge incinerator and gas steam combined cycle unit through the pressure regulating module respectively after entrance module, measurement chromatographic analysis module, whirlwind separation module and smart filtration module in proper order, and sludge incinerator and gas steam combined cycle unit sharing natural gas pressure regulating system promptly, sludge drying burns the system and also can enjoy gas steam combined cycle unit with natural gas and use the gas price, adopts the natural gas centralized processing scheme, can reduce area, reduce investment cost and operation maintenance cost.
The sludge drying unit dries sludge by using heat supply steam of a sludge incinerator steam and a gas steam combined cycle unit, and simultaneously sends the dried sludge condensate to a condensate system and a sludge incineration water supply system of the gas steam combined cycle unit respectively, specifically, the sludge drying unit comprises a sludge drying machine, the sludge drying machine receives wet sludge from a wet sludge bin through a sludge pump and dries the wet sludge by using the heat supply steam of the sludge incinerator steam and the gas steam combined cycle unit, dried dry sludge enters a sludge incinerator through a dry sludge bin, the dried condensate is sent to the condensate system and the sludge incineration water supply system of a condensation area through a condensate water tank respectively, and further, a steam drying interface for a decontamination sludge drying machine is reserved in a heat supply steam main pipe of a gas turbine by the gas steam combined cycle unit, in addition, steam is led from a gas turbine project, appropriate parameters (back pressure) can be set, and a back pressure machine can be set to improve the efficiency; the heat recovered by sludge drying and dewatering can heat desalted water of a fuel machine project, and energy loss is reduced.
The gas of sludge drying unit is collected to the gas collection unit to the combustion chamber of gas steam combined cycle unit is sent into to the gas that will collect, and is specific, the gas collection unit is unloaded with the mud of sludge drying unit between, mud receives storehouse, mud and is received between, mud is stored between and the exhaust system between the desiccator and is connected, the gas that the gas collection unit will collect sends into the combustion chamber through the compressor, and the production of sludge drying incineration system promptly and the middle concentration foul smell that can't absorb and low concentration foul smell concentrate and collect the back and send to gas steam combined cycle unit compressor entry through sealed tuber pipe, send the gas turbine combustion chamber burning through the compressor, and the sludge drying burns then need not to handle this a large amount of foul smell.
Furthermore, the gas-steam combined cycle unit comprises a gas turbine and a steam turbine which are connected with the generator, a gas compressor connected with air, a combustion chamber connected with natural gas, and a waste heat boiler arranged between the gas turbine and the steam turbine.
The invention also provides a method for coupling the sludge drying and incineration with the gas-steam combined cycle unit, which comprises the following steps:
(1) coupling heating steam of a sludge drying unit and dried condensed water with a gas-steam combined cycle unit, wherein insufficient steam of the sludge drying unit is provided by heating steam of a gas turbine area, and redundant condensed water of the sludge drying unit is sent to the condensed water system of the gas-steam combined cycle unit;
(2) coupling natural gas for sludge drying and incineration with a natural gas system for a gas-steam combined cycle unit, wherein the natural gas is uniformly metered and filtered and then enters the sludge incinerator and the gas-steam combined cycle unit which respectively correspond to the natural gas through two pressure regulating modules;
(3) the medium-concentration odor and the low-concentration odor of the sludge drying unit are coupled with air for combustion of the gas-steam combined cycle unit, and the medium-concentration odor and the low-concentration odor of the sludge drying unit and the air enter a gas compressor of the gas-steam combined cycle unit together and are sent into a combustion chamber through the gas compressor for combustion.
According to the invention, high-quality steam of the gas-steam combined cycle unit is used for power generation, low-quality steam extraction is used for heat supply and sludge drying, and gradient utilization of energy is realized; the invention sends the condensed water after the sludge drying back to the gas-steam combined cycle unit for recycling, thereby not only recycling the working medium, but also recycling the heat, and having better economic benefit.
The natural gas for sludge drying incineration and the natural gas for gas steam combined cycle are both from an off-plant natural gas pipe network, if the pressure regulating stations are respectively and independently arranged, the investment cost and the operation and maintenance cost are increased, and because the natural gas belongs to flammable and explosive products, the distance requirement between the pressure regulating stations and surrounding buildings and equipment is larger, and more occupied areas are needed for independent arrangement.
The invention directly leads the odor to the gas-steam combined cycle unit compressor, and then enters the combustion chamber for high-temperature combustion without treatment, thereby having better economic benefit and social benefit.
In conclusion, the invention can save the occupied area of sludge drying incineration, reduce the investment and the operation cost of the sludge drying incineration, reduce the consumption of primary energy, realize the recycling of working media, reduce repeated construction and have good economic benefit.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The utility model provides a system of sludge drying burns coupling gas steam combined cycle unit which characterized in that: the method comprises the following steps:
the gas supply unit supplies natural gas to the sludge incinerator and the gas-steam combined cycle unit respectively;
the sludge drying unit is used for drying sludge by using steam of the sludge incinerator and heat supply steam of the gas-steam combined cycle unit, and simultaneously delivering condensed water obtained after sludge drying to a condensed water system of the gas-steam combined cycle unit and a sludge incineration water supply system respectively;
and the gas collecting unit is used for collecting the gas of the sludge drying unit and sending the collected gas into a combustion chamber of the gas-steam combined cycle unit.
2. The system of the sludge drying and incineration coupled gas-steam combined cycle unit as claimed in claim 1, wherein: and the natural gas of the gas supply unit sequentially passes through the inlet module, the metering chromatographic analysis module, the cyclone separation module and the fine filtering module and then respectively enters the sludge incinerator and the gas-steam combined cycle unit through the pressure regulating module.
3. The system of the sludge drying and incineration coupled gas-steam combined cycle unit as claimed in claim 1, wherein: the sludge drying unit comprises a sludge drying machine, the sludge drying machine receives wet sludge from a wet sludge bin through a sludge pump, the wet sludge is dried by utilizing heating steam of a sludge incinerator steam and a gas-steam combined cycle unit, dried dry sludge enters the sludge incinerator through a dry sludge bin, and dried condensed water is respectively sent to a gas turbine area condensed water system and a sludge incineration water supply system through a condensed water tank.
4. The system of the sludge drying and incineration coupled gas-steam combined cycle unit as claimed in claim 1, wherein: the gas-steam combined cycle unit comprises a gas turbine and a steam turbine which are connected with a generator, a gas compressor connected with air, a combustion chamber connected with natural gas and a waste heat boiler arranged between the gas turbine and the steam turbine.
5. The system of the sludge drying and incineration coupled gas-steam combined cycle unit as claimed in claim 1, wherein: the gas collection unit is connected with a sludge discharge room, a sludge receiving bin, a sludge receiving room, a sludge storage room and an exhaust system of the drier room of the sludge drying unit, and the gas collection unit sends collected gas into the combustion chamber through the gas compressor.
6. The system of the sludge drying and incineration coupled gas-steam combined cycle unit as claimed in claim 1, wherein: still include auxiliary unit, auxiliary unit is including the power consumption, rainwater, fire control and the circulating water system that the coupling set up.
7. A method for coupling sludge drying and incineration with a fuel gas and steam combined cycle unit is characterized by comprising the following steps: the method comprises the following steps:
(1) coupling the heating steam of the sludge drying unit and the dried condensed water with a gas-steam combined cycle unit;
(2) coupling natural gas for sludge drying and incineration and natural gas for a gas-steam combined cycle unit;
(3) the medium-concentration odor and the low-concentration odor of the sludge drying unit are coupled with the air for combustion of the gas-steam combined cycle unit.
8. The method of claim 7, wherein the method comprises the following steps: and (2) supplying insufficient steam of the sludge drying unit in the step (1) by using heat supply steam of the gas turbine area, and sending redundant condensed water of the sludge drying unit to a condensed water system of the gas-steam combined cycle unit.
9. The method of claim 7, wherein the method comprises the following steps: and (3) uniformly metering and filtering the natural gas in the step (2), and then respectively entering the sludge incinerator and the gas-steam combined cycle unit which respectively correspond to the natural gas through the two pressure regulating modules.
10. The method of claim 7, wherein the method comprises the following steps: and (4) feeding the medium-concentration odor and the low-concentration odor of the sludge drying unit in the step (3) and air into a gas compressor of the gas-steam combined cycle unit, and feeding the air into a combustion chamber for combustion through the gas compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110288389.4A CN112943394A (en) | 2021-03-18 | 2021-03-18 | System and method for sludge drying and incineration coupled gas-steam combined cycle unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110288389.4A CN112943394A (en) | 2021-03-18 | 2021-03-18 | System and method for sludge drying and incineration coupled gas-steam combined cycle unit |
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| CN112943394A true CN112943394A (en) | 2021-06-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114542221A (en) * | 2022-02-22 | 2022-05-27 | 上海发电设备成套设计研究院有限责任公司 | Device system and method for power station peak shaving and sludge drying energy storage |
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2021
- 2021-03-18 CN CN202110288389.4A patent/CN112943394A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114542221A (en) * | 2022-02-22 | 2022-05-27 | 上海发电设备成套设计研究院有限责任公司 | Device system and method for power station peak shaving and sludge drying energy storage |
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