CN112594695A - Supercritical water gasification device for industrial garbage - Google Patents
Supercritical water gasification device for industrial garbage Download PDFInfo
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- CN112594695A CN112594695A CN202011287051.9A CN202011287051A CN112594695A CN 112594695 A CN112594695 A CN 112594695A CN 202011287051 A CN202011287051 A CN 202011287051A CN 112594695 A CN112594695 A CN 112594695A
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- 238000002309 gasification Methods 0.000 title claims abstract description 135
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 32
- 239000007789 gas Substances 0.000 claims abstract description 86
- 238000002485 combustion reaction Methods 0.000 claims abstract description 38
- 238000010248 power generation Methods 0.000 claims abstract description 16
- 230000001502 supplementing effect Effects 0.000 claims abstract description 7
- 239000002699 waste material Substances 0.000 claims abstract description 6
- 239000002440 industrial waste Substances 0.000 claims description 22
- 230000005611 electricity Effects 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 15
- 230000009471 action Effects 0.000 claims description 11
- 239000002918 waste heat Substances 0.000 claims description 6
- 230000006837 decompression Effects 0.000 claims description 5
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 8
- 239000003546 flue gas Substances 0.000 abstract description 8
- 238000000746 purification Methods 0.000 abstract description 5
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/46—Recuperation of heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/30—Pyrolysing
- F23G2201/301—Treating pyrogases
Abstract
The invention discloses a supercritical water gasification device for industrial garbage, which comprises: the operation temperature of the gasification furnace is more than 374 ℃, and the operation pressure of the gasification furnace is more than 22.1Mpa, so that the waste in the gasification furnace is gasified by using supercritical water to generate gasified gas; the feeding device is connected with the gasification furnace and is used for feeding garbage into the gasification furnace; the air inlet pipeline is connected with the gasification furnace and is used for supplementing combustion-supporting gas into the gasification furnace; the water inlet pipeline is connected with the gasification furnace and used for supplementing water into the gasification furnace so as to form supercritical water in the gasification furnace; and the power generation unit is connected with the gasification furnace and generates power by utilizing the gasified gas. According to the supercritical water gasification device for industrial garbage provided by the invention, garbage is generated by gasifying supercritical water and feeding into the gasification furnaceForming gasified gas, the gasified gas after combustion can not generate NOx and SO2、H2S, HCl, etc., can be directly discharged into the atmosphere without flue gas purification.
Description
Technical Field
The invention relates to the field of garbage treatment, in particular to a supercritical water gasification device for industrial garbage.
Background
Industrial waste refers to solid waste produced in industrial processes. The industrial waste generally comprises combustible materials such as textile fabrics, wooden materials, plastics, sponges, foams and the like. Because the heat value of the industrial garbage is high, the industrial garbage is treated by adopting an incineration method, so that the method has the advantages of reduction, harmlessness, ecology and resource utilization, can realize the reduction of the garbage and generate power at the same time, and creates certain economic benefit. However, a large amount of flue gas containing HCl and SO is generated in the process of waste incineration2And harmful substances such as NOx cause air pollution, so the flue gas needs to be treated and can be discharged after reaching the standard.
Therefore, it is necessary to provide a supercritical water gasification apparatus for industrial waste to solve the above problems.
Disclosure of Invention
In this summary, concepts in a simplified form are introduced that are further described in the detailed description. This summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
The invention provides a supercritical water gasification device for industrial garbage, which comprises:
the operation temperature of the gasification furnace is more than 374 ℃, and the operation pressure of the gasification furnace is more than 22.1Mpa, so that the waste in the gasification furnace is gasified by using supercritical water to generate gasified gas;
the feeding device is connected with the gasification furnace and is used for feeding garbage into the gasification furnace;
the air inlet pipeline is connected with the gasification furnace and is used for supplementing combustion-supporting gas into the gasification furnace;
the water inlet pipeline is connected with the gasification furnace and used for supplementing water into the gasification furnace so as to form supercritical water in the gasification furnace;
and the power generation unit is connected with the gasification furnace and generates power by utilizing the gasified gas.
Further, the operating temperature range of the gasification furnace is 450-700 ℃, and the operating pressure range of the gasification furnace is 23-25 MPa.
Further, the feeding device comprises a closed container, and the feeding device is communicated with the gasification furnace through a pressurizing pipeline, so that the pressure of the feeding device is consistent with that of the gasification furnace.
Further, the supercritical water gasification apparatus further includes:
and the pressure relief gas combustion chamber is connected with the feeding device and is used for combusting pressure relief gas exhausted when the feeding device relieves the pressure.
Further, the supercritical water gasification apparatus further includes:
the first heating device is arranged on the air inlet pipeline and heats the combustion-supporting gas supplemented into the gasification furnace by utilizing the waste heat of the decompression gas combustion chamber;
and the second heating device is arranged on the water inlet pipeline and is used for heating the water supplemented into the gasification furnace by using the waste heat of the pressure relief gas combustion chamber.
Further, the power generation unit includes:
the high-pressure steam turbine is connected with the gasification furnace and is used for driving the generator to generate electricity under the action of high-pressure steam in the gasification gas discharged by the gasification furnace;
the second combustion chamber is connected with the high-pressure turbine and is used for combusting combustible gas in the gasified gas discharged by the gasification furnace;
and the low-pressure turbine is connected with the secondary combustion chamber and is used for driving the generator to generate electricity under the action of the steam exhausted from the secondary combustion chamber.
Further, the power generation unit includes:
the gas turbine is connected with the gasification furnace and used for combusting combustible gas in the gasified gas discharged by the gasification furnace to drive the generator to generate electricity;
and the steam turbine is connected with the gas turbine and used for driving the generator to generate electricity under the action of the steam exhausted by the gas turbine.
Further, the supercritical water gasification apparatus further includes:
and the condenser is connected to the power generation unit and used for cooling and condensing the exhaust gas discharged by the power generation unit, and the generated condensed water is sent into the water inlet pipeline through a return pipeline.
According to the supercritical water gasification device for industrial garbage provided by the invention, garbage fed into the gasification furnace is gasified by supercritical water to generate gasification gas, elements such as N, S, Cl in the garbage are fixed in bottom slag in a salt form, and the gasification gas after combustion does not generate NOx and SO2、H2S, HCl, etc., can be directly discharged into the atmosphere without flue gas purification.
Drawings
The following drawings of the invention are included to provide a further understanding of the invention. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
In the drawings:
fig. 1 is a schematic view of a supercritical water gasification apparatus for industrial waste according to an exemplary embodiment of the present invention.
Reference numerals
101. Gasification furnace 102 and feeding device
103. Decompression gas combustion chamber 104, first heating device
105. Second heating device 106, high pressure turbine
107. Second combustion chamber 108, low pressure steam turbine
109. Separator 110 and condenser
111. Pressurizing pipeline 112 and feeding pipeline
113. Water inlet pipeline 114, air inlet pipeline
115. Return line
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.
In order to thoroughly understand the present invention, a detailed description will be given in the following description to illustrate the supercritical water gasification apparatus of industrial waste of the present invention. It will be apparent that the practice of the invention is not limited to the specific details known to those skilled in the art of waste treatment. The following detailed description of the preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to those detailed.
It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Exemplary embodiments according to the present invention will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art. In the drawings, the thicknesses of layers and regions are exaggerated for clarity, and the same elements are denoted by the same reference numerals, and thus the description thereof will be omitted.
At present, the reduction treatment mode of high-calorific-value industrial waste mainly comprises the following steps: 1) recycling according to the components of the industrial garbage; 2) mixing with domestic garbage for combustion, and performing synergistic incineration treatment; 3) a water-cooled grate furnace is combined with a water-cooled hearth to carry out incineration treatment; 4) the incineration treatment is carried out by adopting a circulating fluidized bed mode.
The recycling according to the components of the industrial waste is the best decrement treatment mode of the industrial waste, but the waste has single component and high cleanliness, and the method is not suitable for a plurality of industrial wastes, such as leftover materials of milk box packages, PE, paper and aluminum foil are hot-pressed together, the separation is very difficult, the recycling process generates high energy consumption, and a plurality of waste water is brought along.
The method is suitable for areas with low industrial waste yield, and simultaneously requires low Cl content in industrial waste, otherwise, the industrial waste entering the traditional household garbage incinerator can greatly improve the heat value of the incinerator, and the volumetric heat load of the incinerator exceeds the designed value, so that a series of problems of frequent replacement of refractory materials in the incinerator, pipe explosion of a superheater, serious coking and the like are caused.
Based on the characteristic of high calorific value of industrial waste, the water-cooled grate furnace or the circulating fluidized bed is designed for combustion, so that the defects can be avoided, but the following defects still exist: cooling water of the water-cooling fire grate segment can take away part of heat, so that energy loss is caused; the temperature of main steam of the system can not be higher than 450 ℃ generally due to the limitation of materials, otherwise, the superheater is extremely easy to corrode and explode, the safe operation is influenced, and the energy utilization efficiency is low; and the circulating fluidized bed has higher service power, and can not realize the high-efficient recycle of the high-heating value industrial garbage energy.
In addition, in the direct incineration process, because the heat value of the industrial waste is high, the flame temperature in the incinerator is extremely high, and elements N, S, Cl in the industrial waste are in the form of gaseous pollutants (NOx and SO)2HCl) exists in the flue gas, which brings huge pressure to the subsequent flue gas purification process; alkali metals and heavy metals in the garbage can also form gaseous compounds at high temperature, and the gaseous compounds are enriched in fly ash, so that great influence is brought to the environment.
In view of the above problems, the present invention provides a supercritical water gasification apparatus for industrial waste, as shown in fig. 1, comprising:
the operation temperature of the gasification furnace 101 is more than 374 ℃, and the operation pressure of the gasification furnace 101 is more than 22.1Mpa, so that the waste in the gasification furnace 101 is gasified by using supercritical water to generate gasified gas;
a feeding device 102 connected to the gasification furnace 101 for feeding the garbage into the gasification furnace 101;
an air inlet pipeline 114 connected to the gasification furnace 101 for supplying combustion-supporting gas to the gasification furnace 101;
a water inlet line 113 connected to the gasification furnace 101 for supplementing water to the gasification furnace 101 to form supercritical water in the gasification furnace 101;
and a power generation unit connected to the gasification furnace 101 and generating power by using the gasified gas.
Illustratively, the gasifier 101 is a device for gasifying and oxidizing garbage by using supercritical water. Supercritical water is water in which the density of water expanded by high temperature and the density of water vapor compressed by high pressure are exactly the same when the pressure of air is higher than 22.1MPa and the temperature is higher than 374 ℃. At this time, the liquid and the gas of water are completely mixed together without distinction, and become a new supercritical fluid which shows a high-pressure and high-temperature state, and the garbage is completely wrapped and sufficiently mixed by the supercritical water in the equipment, and can sufficiently react with the supercritical water in a high-temperature and high-pressure environment.
Further, in order to enable water to form supercritical water in the gasification furnace 101, the operation temperature of the gasification furnace 101 is higher than 374 ℃, and the operation pressure of the gasification furnace 101 is higher than 22.1 Mpa. Preferably, the operating temperature range of the gasification furnace is 450-700 ℃, and the operating pressure range of the gasification furnace is 23-25 MPa.
In one embodiment, the gasifier 101 is operated at a critical pressure and temperature of water, wherein the water has no significant phase change process and has a very fast reaction rate when contacting industrial waste with high calorific value, thereby ensuring complete gasification of combustible components of the industrial waste to produce a gasification gas comprising primarily H2、CO、CmHn、CO2And the like, and do not contain N, S, Cl and the like.
Further, in order to form supercritical water in the gasification furnace 101 and gasify industrial waste using the supercritical water, it is necessary to supplement water and combustion-supporting gas (for example, oxygen gas) into the gasification furnace 101, and therefore, the combustion-supporting gas is supplemented into the gasification furnace 101 through an air inlet pipe 114 connected to the gasification furnace 101, and water is supplemented into the gasification furnace 101 through a water inlet pipe 113 connected to the gasification furnace 101.
The garbage is gasified and oxidized by supercritical water, SO that elements such as N, S, Cl, alkali metals and heavy metals in the garbage can be fixed in the bottom slag in the form of salt, and NOx and SO are not generated2、H2S, HCl, etc., so that the supercritical water gasification device for industrial refuse provided by the invention does not need a flue gas purification device. Meanwhile, the operating temperature of the gasification furnace 101 is controlled below 700 ℃, so that the generation of tar can be effectively avoided.
Illustratively, the feeding device 102 comprises a closed vessel, as an example, a lock hopper, which is a pressure buffer vessel used in pressurized delivery systems, typically installed between an atmospheric vessel and a pressurized vessel.
Further, the feeding device 102 is communicated with the gasification furnace 101 through a pressurizing pipeline 111.
In one embodiment, the lock hopper is opened at normal pressure, the industrial garbage crushed to 5mm-100mm is fed into the lock hopper, then the lock hopper is closed, the pressurizing line 111 is opened to make the pressure in the lock hopper consistent with the pressure in the gasification furnace 101, the garbage is fed into the gasification furnace 101 through the feeding line 112 and gasified by supercritical water in the gasification furnace 101 to generate ash and gasified gas. Closing the pressurizing pipeline 111 and the feeding pipeline 112, opening the lock hopper, releasing the pressure relief gas in the lock hopper into the pressure relief gas combustion chamber 103 along with the pressure relief of the lock hopper, wherein the pressure relief gas mainly comprises H because the pressure relief gas is derived from the gasification gas generated in the gasification furnace 1012、CO、CmHn、CO2Etc. do not contain N, S, Cl, etc., so oxygen is introduced into the pressure-release gas combustion chamber 103 to assist combustion, and the gas generated by combustion contains only H2O and CO2And can be directly discharged into the atmosphere.
Illustratively, the supercritical water gasification apparatus for industrial waste further includes a first heating device 104 disposed on the air inlet line 114 and a second heating device 105 disposed on the water inlet line 113 to heat the oxidant gas (e.g., oxygen) and water fed into the gasification furnace 101, respectively.
In one embodiment, the first heating device 104 and the second heating device 105 exchange heat by using waste heat generated by combustion in the decompression gas combustion chamber 103 to heat oxygen and water fed into the gasification furnace 101, respectively.
The waste heat of the decompression gas combustion chamber 103 is used for heating the oxygen and the water fed into the gasification furnace 101, so that the cost can be reduced, and the full utilization of energy can be realized.
As shown in fig. 1, the power generation unit includes:
the high-pressure turbine 106 is connected with the gasification furnace 101 and is used for driving a generator to generate electricity under the action of high-pressure steam in the gasification gas discharged from the gasification furnace 101;
a secondary combustion chamber 107 connected to the high pressure turbine 107 for combusting combustible gas in the gasification gas discharged from the gasification furnace 101;
and the low-pressure turbine 108 is connected with the secondary combustion chamber 107 and is used for driving a generator to generate electricity under the action of the steam exhausted from the secondary combustion chamber 107.
In one embodiment, the high pressure turbine 106 is configured to rotate under the influence of high pressure steam in the gasification gas, thereby driving a generator (not shown) to generate electricity. That is, in the high pressure turbine 106, the thermal energy of the high pressure steam is first converted into mechanical energy, and then the mechanical energy is converted into electric energy, thereby generating electricity. Because the steam generated in the gasification furnace 101 belongs to high-temperature high-pressure steam, the steam firstly enters the high-pressure turbine 106 and drives the high-pressure turbine 106 to work; next, the discharge gas from the high pressure turbine 106 is introduced into a secondary combustion chamber 107 for combustion, which mainly comprises H2、CO、CmHn、CO2And so on, oxygen is introduced into the second combustion chamber 107 to support combustion, and the gas generated by combustion only contains H2O and CO2(ii) a Next, H discharged from the second combustion chamber 1072O and CO2And enters a low pressure turbine 108, and the low pressure turbine 108 is configured to rotate under the action of the steam discharged from the secondary combustion chamber 107, so as to drive a generator to generate electricity. That is, in the low pressure turbine 108, the thermal energy of the steam discharged from the secondary combustion chamber 107 is first converted into mechanical energy, and then the mechanical energy is converted into electric energy, thereby generating electricity.
By supplying the high-pressure turbine 106 with the high-temperature and high-pressure gasification gas, the power generation efficiency of the turbine is improved.
In another embodiment, the power generation unit comprises:
the gas turbine is connected with the gasification furnace and used for combusting combustible gas in the gasified gas discharged by the gasification furnace to drive the generator to generate electricity;
and the steam turbine is connected with the gas turbine and used for driving the generator to generate electricity under the action of the steam exhausted by the gas turbine.
As one example, a gas turbine is configured to rotate under the influence of combustible gases in the gasification gas, thereby driving an electrical generator (not shown) to generate electricity.That is, in the gas turbine, the chemical energy of the combustible gas is first converted into mechanical energy, and then electricity is generated by converting the mechanical energy into electrical energy. Because the gasified gas mainly comprises H2、CO、CmHn、CO2So that the gas produced by combustion of the gasification gas in the gas turbine contains only H2O and CO2(ii) a Next, H discharged from the gas turbine2O and CO2And the steam turbine is configured to rotate under the action of the steam exhausted by the gas turbine, so that the generator is driven to generate electricity. That is, in the steam turbine, the thermal energy of the steam is first converted into mechanical energy, and then the mechanical energy is converted into electric energy, thereby generating electricity.
Illustratively, the supercritical water gasification apparatus for industrial waste further includes a separator 109 and a condenser 110.
In one embodiment, the off-gas discharged from the power generation unit typically includes only water vapor and CO2The separator 109 and the condenser 110 are used to cool and condense the water vapor to separate CO2Introduction of CO into2The water generated by condensation is directly discharged into the atmosphere, and the water is subjected to desalination treatment and then flows back to the water inlet pipeline 113 through the return pipeline 105, so that the water can be recycled. The heat released in the condensation process can be supplied to a heat-requiring working section or used for heating a plant area and the like.
According to the supercritical water gasification device for industrial garbage provided by the invention, garbage fed into the gasification furnace is gasified by supercritical water to generate gasification gas, elements such as N, S, Cl in the garbage are fixed in bottom slag in a salt form, and the gasification gas after combustion does not generate NOx and SO2、H2S, HCl, etc., can be directly discharged into the atmosphere without flue gas purification.
The present invention has been illustrated by the above embodiments, but it should be understood that the above embodiments are for illustrative and descriptive purposes only and are not intended to limit the invention to the scope of the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many variations and modifications may be made in accordance with the teachings of the present invention, which variations and modifications are within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A supercritical water gasification apparatus for industrial waste, comprising:
the operation temperature of the gasification furnace is more than 374 ℃, and the operation pressure of the gasification furnace is more than 22.1Mpa, so that the waste in the gasification furnace is gasified by using supercritical water to generate gasified gas;
the feeding device is connected with the gasification furnace and is used for feeding garbage into the gasification furnace;
the air inlet pipeline is connected with the gasification furnace and is used for supplementing combustion-supporting gas into the gasification furnace;
the water inlet pipeline is connected with the gasification furnace and used for supplementing water into the gasification furnace so as to form supercritical water in the gasification furnace;
and the power generation unit is connected with the gasification furnace and generates power by utilizing the gasified gas.
2. The supercritical water gasification apparatus of claim 1 wherein the gasifier operates at a temperature in the range of 450 ℃ to 700 ℃ and at a pressure in the range of 23MPa to 25 MPa.
3. The supercritical water gasification apparatus of claim 1 wherein the feeding device comprises a closed container, and the feeding device is communicated with the gasification furnace through a pressurizing pipeline so that the pressure of the feeding device is consistent with that of the gasification furnace.
4. The supercritical water gasification apparatus of claim 3 further comprising:
and the pressure relief gas combustion chamber is connected with the feeding device and is used for combusting pressure relief gas exhausted when the feeding device relieves the pressure.
5. The supercritical water gasification apparatus of claim 4 further comprising:
the first heating device is arranged on the air inlet pipeline and heats the combustion-supporting gas supplemented into the gasification furnace by utilizing the waste heat of the decompression gas combustion chamber;
and the second heating device is arranged on the water inlet pipeline and is used for heating the water supplemented into the gasification furnace by using the waste heat of the pressure relief gas combustion chamber.
6. The supercritical water gasification apparatus of claim 1 wherein the power generation unit comprises:
the high-pressure steam turbine is connected with the gasification furnace and is used for driving the generator to generate electricity under the action of high-pressure steam in the gasification gas discharged by the gasification furnace;
the second combustion chamber is connected with the high-pressure turbine and is used for combusting combustible gas in the gasified gas discharged by the gasification furnace;
and the low-pressure turbine is connected with the secondary combustion chamber and is used for driving the generator to generate electricity under the action of the steam exhausted from the secondary combustion chamber.
7. The supercritical water gasification apparatus of claim 1 wherein the power generation unit comprises:
the gas turbine is connected with the gasification furnace and used for combusting combustible gas in the gasified gas discharged by the gasification furnace to drive the generator to generate electricity;
and the steam turbine is connected with the gas turbine and used for driving the generator to generate electricity under the action of the steam exhausted by the gas turbine.
8. The supercritical water gasification apparatus of claim 1 further comprising:
and the condenser is connected to the power generation unit and used for cooling and condensing the exhaust gas discharged by the power generation unit, and the generated condensed water is sent into the water inlet pipeline through a return pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011287051.9A CN112594695A (en) | 2020-11-17 | 2020-11-17 | Supercritical water gasification device for industrial garbage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011287051.9A CN112594695A (en) | 2020-11-17 | 2020-11-17 | Supercritical water gasification device for industrial garbage |
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| Publication Number | Publication Date |
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| CN112594695A true CN112594695A (en) | 2021-04-02 |
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| CN202011287051.9A Pending CN112594695A (en) | 2020-11-17 | 2020-11-17 | Supercritical water gasification device for industrial garbage |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114989868A (en) * | 2022-05-12 | 2022-09-02 | 上海丝竺投资有限公司 | Zero-pollution supercritical water gasification safe power generation technical improvement method for garbage power plant |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000109859A (en) * | 1998-10-07 | 2000-04-18 | Mitsubishi Materials Corp | Process and device for converting coal into fuel for generating unit |
| CN1737351A (en) * | 2005-09-01 | 2006-02-22 | 西安交通大学 | System and method for improving efficiency of combined cycle electric power plant |
| CN1789809A (en) * | 2005-12-20 | 2006-06-21 | 山东大学 | Internal combustion circulating energy conversion system for supercritical oxidation |
| CN102518489A (en) * | 2012-01-06 | 2012-06-27 | 新奥科技发展有限公司 | Power generation method, and device for gasified production of energy products and thermal power generation |
| CN109810728A (en) * | 2019-03-27 | 2019-05-28 | 楼龙春 | A kind of supercritical gasification device and method |
-
2020
- 2020-11-17 CN CN202011287051.9A patent/CN112594695A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000109859A (en) * | 1998-10-07 | 2000-04-18 | Mitsubishi Materials Corp | Process and device for converting coal into fuel for generating unit |
| CN1737351A (en) * | 2005-09-01 | 2006-02-22 | 西安交通大学 | System and method for improving efficiency of combined cycle electric power plant |
| CN1789809A (en) * | 2005-12-20 | 2006-06-21 | 山东大学 | Internal combustion circulating energy conversion system for supercritical oxidation |
| CN102518489A (en) * | 2012-01-06 | 2012-06-27 | 新奥科技发展有限公司 | Power generation method, and device for gasified production of energy products and thermal power generation |
| CN109810728A (en) * | 2019-03-27 | 2019-05-28 | 楼龙春 | A kind of supercritical gasification device and method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114989868A (en) * | 2022-05-12 | 2022-09-02 | 上海丝竺投资有限公司 | Zero-pollution supercritical water gasification safe power generation technical improvement method for garbage power plant |
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