CN115854316A - Waste heat utilization steam turbine power generation system - Google Patents
Waste heat utilization steam turbine power generation system Download PDFInfo
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- CN115854316A CN115854316A CN202211030953.3A CN202211030953A CN115854316A CN 115854316 A CN115854316 A CN 115854316A CN 202211030953 A CN202211030953 A CN 202211030953A CN 115854316 A CN115854316 A CN 115854316A
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Abstract
The invention provides a waste heat utilization steam turbine power generation system which comprises an evaporation boiler, a liquid recovery container, a liquid guide pipe, a steam guide pipe, a waste gas access pipe, a heat exchange connecting pipe, a waste gas discharge pipe and a steam turbine assembly, wherein gasification liquid is filled in the liquid recovery container and the evaporation boiler, the heat exchange connecting pipe is coiled in the evaporation boiler from top to bottom, the upper end of the heat exchange connecting pipe is communicated with a waste gas discharge pipeline, the lower end of the heat exchange connecting pipe is communicated with outside air through the waste gas discharge pipe, the upper end of the evaporation boiler is also connected with the steam guide pipe, the steam guide pipe is communicated with the upper end of the liquid recovery container, and the steam turbine assembly is arranged on the steam guide pipe. The low-temperature gasified liquid is heated by utilizing the waste heat, so that the low-temperature gasified liquid is gasified to generate high-pressure gas to drive the steam turbine to work and generate power, the industrial or civil waste heat is recycled, and the low-temperature gasified liquid is more energy-saving and environment-friendly.
Description
Technical Field
The invention relates to the field of energy conservation and environmental protection, in particular to a waste heat utilization steam turbine power generation system.
Background
The boiler is an energy conversion device, the energy input to the boiler comprises chemical energy and electric energy in fuel, and the boiler outputs steam, high-temperature water or an organic heat carrier with certain heat energy. The boiler is a water container heated on fire, a furnace is a place where fuel is combusted, and the boiler comprises a boiler and a furnace. The hot water or steam generated in the boiler can directly provide heat energy for industrial production and people life, and can also be converted into mechanical energy through a steam power device, or the mechanical energy is converted into electric energy through a generator. The boiler for supplying hot water is called a hot water boiler, is mainly used for life, and has a small amount of application in industrial production. The boiler for generating steam is called as a steam boiler, is often called as a boiler for short, and is mainly used for thermal power stations, ships, locomotives and industrial and mining enterprises. A boiler heated by using heat conduction oil is called a heat conduction oil boiler. The heat conducting oil, also called organic heat carrier or heat medium oil, has been used as an intermediate heat transfer medium in industrial heat exchange process for over fifty years, and is widely applied to the industrial fields needing high temperature, such as petroleum, chemical engineering, pharmacy, textile printing and dyeing, light industry, building materials, food, road asphalt heating, and the like. At present, when people are heating and bathing, a normal pressure hot water boiler is adopted, the boiler body of the boiler is of an integral structure and mainly comprises an integral boiler shell and a boiler liner arranged in the integral boiler shell, an upper layer of transverse water pipe, a middle layer of transverse water pipe and a lower layer of transverse water pipe are arranged in the boiler liner, and a chimney positioned above the boiler shell is communicated with the boiler liner through a cupola pipe. The circulating water in the boiler circulates from bottom to top through a water storage chamber formed between the boiler shell and the boiler liner and a transverse water pipe communicated with the water storage chamber, and has the advantages of small heating area, large water capacity, high coal consumption and slow temperature rise. The combustion flame in the combustion chamber directly radiates the furnace pipe, high-temperature flue gas flows upwards to heat the transverse water pipe and then directly enters the chimney through the cupola pipe to be discharged, the flue gas flow is short, the combustion is insufficient, a large part of heat is discharged along with the flue gas, the heat efficiency is low, the temperature of the discharged flue gas is high, and energy waste is caused. At the same time, such boilers are also inconvenient to maintain. Most of the existing various boiler products are integrated, and have the defects of low energy utilization rate and serious pollution.
The waste heat recovery is to utilize sensible heat and latent heat which are not reasonably utilized in the original design in industrial production, and comprises high-temperature waste gas waste heat, cooling medium waste heat, waste gas and waste water waste heat, high-temperature products and slag waste heat, chemical reaction waste heat, combustible waste gas waste liquid and waste material waste heat, and the like, along with the continuous development of science and technology, the requirements of people on the manufacturing process of waste heat recovery equipment are higher and higher.
There is a need for a waste heat utilization steam turbine power generation system that has a simple structure and can utilize waste heat of exhaust gas and flue gas to generate power, and the system can solve the above problems.
Disclosure of Invention
The invention provides a waste heat utilization steam turbine power generation system, which solves the problem of resource waste caused by direct emission of waste gas of an existing boiler and non utilization of waste gas waste heat by carrying out technical transformation on the emission position of the waste gas of the existing boiler.
In order to realize the purpose, the invention adopts the technical scheme that:
the utility model provides a waste heat utilization steam turbine power generation system, includes evaporation boiler, liquid recovery container, liquid stand pipe, steam stand pipe, waste gas access pipe, heat exchange connecting pipe, exhaust gas discharging pipe and steam turbine subassembly, liquid recovery container and evaporation boiler intussuseption are filled with gasified liquid, and gasified liquid flows to the evaporation boiler direction along the liquid stand pipe from liquid recovery container direction, it is provided with the heat exchange connecting pipe to coiling down to follow in the evaporation boiler, waste gas access pipe and emission exhaust gas pipeline intercommunication are passed through to heat exchange connecting pipe upper end position, exhaust gas discharging pipe and outside air intercommunication are passed through to heat exchange connecting pipe lower extreme position, the evaporation boiler upper end still is connected with the steam stand pipe, the steam stand pipe is linked together with liquid recovery container upper end position from the evaporation boiler other end back, the installation is provided with the steam turbine subassembly on the steam stand pipe.
Preferably, the heat exchange connecting pipe is a heat-conducting and corrosion-resistant metal pipe.
Preferably, the heat exchange connecting pipe is provided with 1-n stages of coiled pipes in sequence from top to bottom, the outer ring of the 1 stage of coiled pipe is connected with the waste gas inlet pipe, the center of the 1 stage of coiled pipe extends downwards to be connected with the center of the 2 stage of coiled pipe, and so on until the center of the n-1 stage of coiled pipe extends downwards to be connected with the center of the n stage of coiled pipe, and the outer ring of the n stage of coiled pipe is connected with the waste gas discharge pipe.
Preferably, the liquid guide pipe is provided with a liquid pump assembly, and the output direction of the liquid pump assembly is from the liquid recovery container to the evaporation boiler.
Preferably, when the temperature of the waste gas is 50-250 ℃, the gasified liquid is Freon or ammonia water.
Preferably, when the temperature of the waste gas is above 250 ℃, the gasified liquid is water.
Preferably, the exhaust gas discharge pipe exit is connected and is provided with second grade power generation system, second grade power generation system includes second grade evaporating boiler, second grade liquid recovery container, second grade liquid stand pipe, second grade steam stand pipe, second grade waste gas access pipe, second grade heat exchange connecting pipe, second grade exhaust gas discharge pipe and second grade steam turbine subassembly, second grade power generation system and evaporating boiler, liquid recovery container, liquid stand pipe, steam stand pipe, waste gas access pipe, heat exchange connecting pipe, exhaust gas discharge pipe and steam turbine subassembly have the same mounting structure, the exhaust gas discharge pipe links to each other with second grade waste gas access pipe, and second grade exhaust gas discharge pipe links to each other with the outside air.
Preferably, the output end of the waste gas discharge pipe is connected with a filter water tank.
The invention has the beneficial effects that:
the invention is provided with an evaporation boiler, gasification liquid is filled in the evaporation boiler, a heat exchange connecting pipe which is coiled is arranged in the evaporation boiler, the heat exchange connecting pipe is soaked in the gasification liquid, the upper end position of the upper end of the heat exchange connecting pipe is communicated with a waste gas discharge pipeline through a waste gas access pipe, the lower end position of the heat exchange connecting pipe is communicated with the outside air through a waste gas discharge pipe, the gasification liquid can be heated by using the heat of waste gas, the gasification liquid is evaporated and gasified, and is communicated with a liquid recovery container through a steam guide pipe, a steam turbine assembly is arranged on the steam guide pipe, the steam turbine assembly generates electricity by converting the mechanical energy of the impact force of steam into electric energy, the steam liquefied through the steam guide pipe is recovered and utilized by the liquid recovery container, and the liquid recovery container is connected with the evaporation boiler and is used for supplementing the gasification liquid to the evaporation boiler.
The low-temperature gasified liquid is heated by utilizing the heat, so that the low-temperature gasified liquid is gasified to generate high-pressure gas to push a steam turbine to work for power generation, the heat of the discharged waste gas can be utilized to generate power and recycle the waste heat, the industrial or civil waste heat is recycled, and the energy is saved and the environment is protected.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a schematic diagram of the present invention coupled to a secondary cogeneration system;
the reference numbers illustrate: the system comprises an evaporation boiler 1, a liquid recovery container 2, a liquid guide pipe 3, a steam guide pipe 4, an exhaust gas access pipe 5, a heat exchange connecting pipe 6, an exhaust gas discharge pipe 7, a steam turbine component 8, a liquid pump component 9, a secondary evaporation boiler 10, a secondary liquid recovery container 11, a secondary liquid guide pipe 12, a secondary steam guide pipe 13, a secondary exhaust gas access pipe 14, a secondary heat exchange connecting pipe 15, a secondary exhaust gas discharge pipe 16, a secondary steam turbine component 17, a filter water tank 18 and gasified liquid 19.
Detailed Description
The details of the present invention are described below in conjunction with the accompanying drawings and examples.
Referring to fig. 1-2, the invention provides a waste heat utilization steam turbine power generation system, which comprises an evaporation boiler 1, a liquid recovery container 2, a liquid guide pipe 3, a steam guide pipe 4, a waste gas inlet pipe 5, a heat exchange connecting pipe 6, a waste gas outlet pipe 7 and a steam turbine assembly 8, wherein the liquid recovery container 2 and the evaporation boiler 1 are filled with gasified liquid 19, the gasified liquid 19 flows from the direction of the liquid recovery container 2 to the direction of the evaporation boiler 1 along the liquid guide pipe 3, the evaporation boiler 1 is internally provided with the heat exchange connecting pipe 6 in a winding manner from top to bottom, the upper end of the heat exchange connecting pipe 6 is communicated with a waste gas outlet pipe through the waste gas inlet pipe 5, the lower end of the heat exchange connecting pipe 6 is communicated with outside air through the waste gas outlet pipe 7, the upper end of the evaporation boiler 1 is further connected with the steam guide pipe 4, the other end of the steam guide pipe 4, which is far away from the evaporation boiler 1, is communicated with the upper end of the liquid recovery container 2, and the steam turbine assembly 8 is arranged on the steam guide pipe 4.
Further, in order to satisfy the heat transfer effect of the heat exchange connection pipe 6, the heat exchange connection pipe 6 is a metal pipe that is heat conductive and corrosion resistant.
Further, in order to obtain a better heat exchange waste heat absorption effect, the heat exchange connecting pipe 6 is sequentially provided with 1-n stages of coiling pipes from top to bottom, the outer ring of the 1 stage of coiling pipe is connected with the waste gas access pipe 5, the center of the 1 stage of coiling pipe extends downwards to be connected with the center position of the 2 stage of coiling pipe, and the like in sequence until the center of the n-1 stage of coiling pipe extends downwards to be connected with the center position of the n stage of coiling pipe, and the outer ring of the n stage of coiling pipe is connected with the waste gas discharge pipe 7. The setting of multistage coiled pipe can greatly increased waste gas and the contact time of gasification liquid 19, increases waste gas waste heat absorption effect, and liquid gasification effect is better.
Further, in order to avoid the content of the gasified liquid 19 in the steam boiler from being too low and affecting the power generation efficiency, a liquid pump assembly 9 is installed on the liquid guide pipe 3, and the output direction of the liquid pump assembly 9 is from the liquid recovery container 2 to the evaporation boiler 1. The vaporized liquid 19 can be output into the evaporation boiler 1 by means of the liquid pump assembly 9.
Further, for the application occasions with lower emission power and lower temperature of smoke heat, when the temperature of the waste gas is 50-250 ℃, the gasified liquid 19 is Freon or ammonia water. The low-temperature gasified liquid 19 with lower gasification temperature, such as Freon or ammonia water, can be adopted, and the application range is wider.
Further, in the application of discharging high-temperature and high-pressure exhaust gas such as large-scale boiler equipment, when the temperature of the exhaust gas is above 250 ℃, the gasified liquid 19 is water. The waste heat utilization is carried out by utilizing water, the cost is lower, and the using effect is better.
Further, as shown in fig. 2, in another embodiment 2, a secondary power generation system is connected to an outlet of the exhaust gas discharge pipe 7, the secondary power generation system includes a secondary evaporation boiler 10, a secondary liquid recovery container 11, a secondary liquid guide pipe 12, a secondary steam guide pipe 13, a secondary exhaust gas inlet pipe 14, a secondary heat exchange connection pipe 15, a secondary exhaust gas discharge pipe 16, and a secondary turbine assembly 17, the secondary power generation system has the same installation structure as the evaporation boiler 1, the liquid recovery container 2, the liquid guide pipe 3, the steam guide pipe 4, the exhaust gas inlet pipe 5, the heat exchange connection pipe 6, the exhaust gas discharge pipe 7, and the turbine assembly 8, the exhaust gas discharge pipe 7 is connected to the secondary exhaust gas inlet pipe 14, and the secondary exhaust gas discharge pipe 16 is connected to the outside air.
In order to obtain better waste heat utilization rate, a multi-stage waste heat utilization power generation system can be arranged, the waste gas heat is recycled for multiple times, and the energy-saving and environment-friendly effects are achieved.
Furthermore, in order to filter and absorb some harmful substances in the flue gas, the output end of the exhaust gas discharge pipe 7 is connected with a filter water tank 18. The waste gas is discharged through the filtering water tank 18, and harmful substances can be dissolved in the filtering water tank 18, so that the method is more environment-friendly and safer.
Further, longitudinal separation has a plurality of baffles in the evaporating boiler 1, the through-hole has been seted up to baffle department, the liquid temperature is from last to reducing in proper order down in the evaporating boiler 1 to the flow of through-hole direction top, the arrangement of baffle is used for increasing the contact time and the distance of liquid 19 and heat exchange connection pipe 6 of gasifying, and the heat absorption effect is better.
This embodiment is provided with evaporating boiler 1, and evaporating boiler 1 intussuseption is filled with gasification liquid 19, and installs the heat exchange connecting pipe 6 that coils the setting in the evaporating boiler 1, heat exchange connecting pipe 6 soaks in gasification liquid 19, 6 upper end positions of heat exchange connecting pipe insert pipe 5 and exhaust gas pipeline intercommunication through waste gas, 6 lower extreme positions of heat exchange connecting pipe pass through exhaust gas discharge pipe 7 and outside air intercommunication, can utilize the heat of waste gas to heat gasification liquid 19, make it evaporation gasification to communicate to liquid recovery container 2 through steam guide pipe 4, be provided with steam turbine component 8 on the steam guide pipe 4, steam turbine component 8 generates electricity through the impact force mechanical energy with steam transformation electric energy, by liquid recovery container 2 recycle after the steam liquefaction through steam guide pipe 4, and liquid recovery container 2 links to each other with evaporating boiler 1 for supply gasification liquid 19 to evaporating boiler 1.
According to the embodiment, the low-temperature gasified liquid 19 is heated by utilizing the heat, so that the low-temperature gasified liquid is gasified to generate high-pressure gas to push a steam turbine to work and generate power, the waste heat can be generated by utilizing the heat of the discharged waste gas to recycle the waste heat, the waste heat utilization rate of the flue gas is improved, the waste of the flue gas waste heat resource is reduced, and the low-temperature gasified liquid is more energy-saving and environment-friendly.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the description of the attached drawings, the specific connection mode of each part adopts conventional means such as mature bolts, rivets, welding and the like in the prior art, the machines, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or through an intermediary, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases for those skilled in the art.
Claims (8)
1. The utility model provides a waste heat utilization steam turbine power generation system, its characterized in that, inserts pipe, heat exchange connecting pipe, exhaust gas discharging pipe and steam turbine subassembly including evaporating boiler, liquid recovery container, liquid stand pipe, steam stand pipe, waste gas, liquid recovery container and evaporating boiler intussuseption are filled with gasified liquid, and gasified liquid flows to the evaporating boiler direction along the liquid stand pipe from the liquid recovery container direction, it is provided with the heat exchange connecting pipe to coil down to follow in the evaporating boiler, heat exchange connecting pipe upper end position inserts the pipe through waste gas and discharges the exhaust gas pipeline intercommunication, exhaust gas discharging pipe and outside air intercommunication are passed through to heat exchange connecting pipe lower extreme position, the evaporating boiler upper end still is connected with the steam stand pipe, the steam stand pipe is linked together with liquid recovery container upper end position apart from the evaporating boiler other end, the installation is provided with the steam turbine subassembly on the steam stand pipe.
2. The system of claim 1, wherein the heat exchange coupling pipe is a metal pipe that is thermally conductive and corrosion resistant.
3. The system as claimed in claim 1, wherein the heat exchange connecting pipe is provided with 1-n stages of winding pipes in sequence from top to bottom, the outer ring of the 1 stage winding pipe is connected with the exhaust gas inlet pipe, the center of the 1 stage winding pipe extends downwards to be connected with the center of the 2 stage winding pipe, and so on until the center of the n-1 stage winding pipe extends downwards to be connected with the center of the n stage winding pipe, and the outer ring of the n stage winding pipe is connected with the exhaust gas outlet pipe.
4. The system according to claim 1, wherein the liquid guide pipe is provided with a liquid pump assembly, and the output direction of the liquid pump assembly is from the liquid recovery container to the evaporating boiler.
5. The system of claim 1, wherein the gasified liquid is freon or ammonia water when the exhaust gas temperature is 50-250 ℃.
6. The system according to claim 1, wherein the gasified liquid is water when the exhaust gas temperature is 250 ℃ or higher.
7. The waste heat utilization steam turbine power generation system according to claim 1, wherein a secondary power generation system is connected to an outlet of the exhaust gas discharge pipe, the secondary power generation system includes a secondary evaporation boiler, a secondary liquid recovery container, a secondary liquid guide pipe, a secondary steam guide pipe, a secondary exhaust gas inlet pipe, a secondary heat exchange connecting pipe, a secondary exhaust gas discharge pipe and a secondary steam turbine component, the secondary power generation system has the same installation structure as the evaporation boiler, the liquid recovery container, the liquid guide pipe, the steam guide pipe, the exhaust gas inlet pipe, the heat exchange connecting pipe, the exhaust gas discharge pipe and the steam turbine component, the exhaust gas discharge pipe is connected to the secondary exhaust gas inlet pipe, and the secondary exhaust gas discharge pipe is connected to outside air.
8. The system of claim 1, wherein a filtering water tank is connected to an output of the exhaust gas discharge pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211030953.3A CN115854316A (en) | 2022-08-26 | 2022-08-26 | Waste heat utilization steam turbine power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211030953.3A CN115854316A (en) | 2022-08-26 | 2022-08-26 | Waste heat utilization steam turbine power generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115854316A true CN115854316A (en) | 2023-03-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211030953.3A Pending CN115854316A (en) | 2022-08-26 | 2022-08-26 | Waste heat utilization steam turbine power generation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115854316A (en) |
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2022
- 2022-08-26 CN CN202211030953.3A patent/CN115854316A/en active Pending
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