CN111237743A - Spiral-flow supercritical water thermal combustion device and method - Google Patents

Spiral-flow supercritical water thermal combustion device and method Download PDF

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Publication number
CN111237743A
CN111237743A CN202010167659.1A CN202010167659A CN111237743A CN 111237743 A CN111237743 A CN 111237743A CN 202010167659 A CN202010167659 A CN 202010167659A CN 111237743 A CN111237743 A CN 111237743A
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slurry
pressure
supercritical
combustion
supercritical water
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王树众
李艳辉
崔成超
蒋卓航
赫文强
张熠姝
王涛
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Xian Jiaotong University
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Xian Jiaotong University
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C5/00Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
    • F23C5/08Disposition of burners
    • F23C5/10Disposition of burners to obtain a flame ring
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D36/00Filter circuits or combinations of filters with other separating devices
    • B01D36/04Combinations of filters with settling tanks
    • B01D36/045Combination of filters with centrifugal separation devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/008Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for liquid waste
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J1/00Removing ash, clinker, or slag from combustion chambers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/02Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/022Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
    • F23J15/027Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using cyclone separators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2700/00Special arrangements for combustion apparatus using fluent fuel
    • F23C2700/02Combustion apparatus using liquid fuel
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00Specific waste
    • F23G2209/10Liquid waste
    • F23G2209/101Waste liquor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2217/00Intercepting solids
    • F23J2217/40Intercepting solids by cyclones

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Gasification And Melting Of Waste (AREA)

Abstract

A cyclone supercritical water-heat combustion apparatus and method, the apparatus includes several water-heat flame generators along the circumference equipartition in the upper portion of apparatus body, each water-heat flame generator is equipped with high-pressure organic slurry input branch pipe and high-pressure oxidant input branch pipe, the geometric axis of each water-heat flame generator output port is circumscribed in the imaginary circle of the apparatus kernel burning area, the lower portion of apparatus body is equipped with the combustion ash slurry gathering cone, the combustion ash slurry gathering cone is connected with the supercritical thermal fluid guide cone of its lower portion, the upper portion of combustion ash slurry gathering cone side is equipped with several combustion ash slurry outlets D, the bottom of supercritical thermal fluid guide cone is equipped with supercritical thermal fluid outlet C, the invention realizes the rapid ignition, high-efficient clean combustion and effective separation of the combustion residue flow of solid phase or solid-containing fuel such as fossil fuel (such as coal), city/industrial sludge, etc., is an advanced combustion technology for promoting the conversion of chemical energy to heat energy with high efficiency and no pollution.

Description

Spiral-flow supercritical water thermal combustion device and method
Technical Field
The invention belongs to the technical field of advanced combustion, energy conservation and environmental protection, and particularly relates to a spiral-flow supercritical water heat combustion device and method.
Background
Supercritical water is water in a special state having a temperature and a pressure higher than its critical point (Tc 374.15 ℃, Pc 22.12 MPa). The supercritical water oxidation technology utilizes the special properties of low viscosity, low dielectric constant, high diffusivity and the like of supercritical water to enable organic matters completely dissolved in the supercritical water to rapidly and thoroughly react with an oxidant in a homogeneous way, carbon elements in the organic matters are converted into carbon dioxide, elements such as chlorine, sulfur, phosphorus and the like are converted into corresponding inorganic salts, most of nitrogen elements are converted into nitrogen, and the high-efficiency harmless treatment of organic wastes is realized. Supercritical water oxidation is a green, efficient and thorough organic waste harmless treatment and disposal technology, and is known as the most potential organic waste treatment technology in the 21 st century. The supercritical water combustion technology is a new type of international introduction combustion technology, which can be regarded as an intensive supercritical water oxidation technology generating a "hydrothermal flame", also called "water-fire compatible" combustion technology. The local high temperature of the hydrothermal flame zone above 1000 ℃ can realize the rapid oxidative degradation of organic matters in fossil fuels and pollutants, and simultaneously release abundant heat.
At present, the problems of salt deposition and corrosion restrict the low-cost and reliable industrial implementation of the supercritical water oxidation technology to a certain extent, wherein a high-pressure high-temperature area of 300-410 ℃ is a material corrosion sensitive area and an inorganic salt rapid precipitation area in a supercritical water oxidation process system, and equipment serving in the working condition area faces severe corrosion and blocking risks caused by salt deposition. If supercritical water heat fire is utilizedFlame and lower temperature material (<300 ℃ C) to realize the rapid temperature rise of the latter, or directly realize the rapid supercritical hydrothermal flame ignition and combustion of lower materials, thereby avoiding equipment corrosion and salt deposition blockage of a high-incidence area in a temperature area of 300-410 ℃. In addition, in the energy field, the conventional coal-fired power generation system and the coal-fired industrial boiler burn coal in a single fire in a gaseous environment taking air as an oxidant in principle, and industrial pollutants such as fly ash, sulfur oxide, carbon oxynitride and the like generated by the conventional coal-fired power generation system and the coal-fired industrial boiler cause huge environmental pollution. Supercritical hydrothermal combustion of fossil fuels such as coal and the like is a technology with a very wide prospect. Supercritical hydrothermal combustion of coal is a novel combustion technology which can realize high-efficiency and clean utilization of coal without pollutant end control. Compared with the conventional combustion technology of coal, the supercritical water heat combustion technology of coal can realize pollutant NO without terminal devices such as desulfurization, denitration, dust removal and the likex、SOxThe source control of the dust can easily realize CO2The method has low cost capture and extremely excellent environmental protection performance. However, solid-phase burning slag slurry is still generated by hydrothermal combustion of solid fuels such as coal and sludge, and if the solid-phase burning slag slurry is not properly disposed, a subsequent device is blocked, and the normal operation of the whole body is influenced. Therefore, the hydrothermal combustion device capable of realizing quick ignition of fuel and effective separation of slag flow after burning out is the key for realizing efficient clean combustion of solid phase or solid-containing fuel such as coal, sludge and the like.
Disclosure of Invention
In order to overcome the disadvantages of the prior art, the present invention provides a cyclone supercritical hydrothermal combustion apparatus and method, which can achieve rapid ignition, efficient clean combustion and effective separation of slag after burnout of solid phase or solid-containing fuel such as fossil fuel (e.g. coal), municipal/industrial sludge, etc., and is an advanced combustion technology for promoting efficient and pollution-free conversion of chemical energy into thermal energy.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a spiral-flow type supercritical water hot combustion device, include a plurality of hydrothermal flame generator 5 along the circumference equipartition in 2 upper portions of device main part, be equipped with high-pressure organic thick liquid input branch pipe 8 and high-pressure oxidant input branch pipe 9 on every hydrothermal flame generator 5, the geometric axis of 5 delivery outlets of each hydrothermal flame generator all is circumscribed in the device interior core combustion area's of kernel imagine circle, the lower part of device main part 2 is provided with the ashes sediment thick liquid and assembles awl 3, the ashes sediment thick liquid assembles awl 3 and links to each other rather than the supercritical hot-fluid guide awl 4 of lower part, the ashes thick liquid assembles 3 side upper portions of awl and is equipped with a plurality of ashes thick liquid exports D, supercritical hot-fluid guide awl 4 bottoms are equipped with supercritical hot-fluid.
Further, the device main body 2 is wrapped by an efficient cooling jacket 1, the efficient cooling jacket 1 is of a jacket structure or a single-layer/multi-layer spiral channel structure, and the coolant is water, air, heat conduction oil, organic slurry or an oxidant and the like.
Further, the high-pressure organic slurry branch pipe 8 is connected to the high-pressure organic slurry delivery pipe 6, the high-pressure oxidizing agent branch pipe 9 is connected to the high-pressure oxidizing agent delivery pipe 7, the high-pressure organic slurry branch pipe 8 and the high-pressure oxidizing agent branch pipe 9 are both simultaneously connected to the hydrothermal flame generators 5, and the pressure at the inlet a of the high-pressure organic slurry delivery pipe 6 and the pressure at the inlet B of the high-pressure oxidizing agent delivery pipe 7 are both not lower than 23 MPa.
Furthermore, the number of the hydrothermal flame generators 5 is 3 or 4, and the arrangement mode of the hydrothermal flame generators 5 ensures that the ash slag slurry and the supercritical fluid do rotary downward movement, so that the separation of the ash slag slurry and the supercritical fluid at the ash slag slurry converging cone 3 is facilitated.
Further, the ember slag slurry converging cone 3 includes, but is not limited to, a micro-pore structure, which may adopt a truncated cone-shaped profile, a large number of micro-pores are distributed in the circumferential direction, and a single large pore is opened at the top or a medium pore is distributed at the top.
Furthermore, the burnt slag slurry outlet D is connected with a pilot pipe provided with a flow control valve 10, and the number of the burnt slag slurry outlets D can be 1, 2 or 3.
The invention also provides a cyclone supercritical water hot combustion method based on the cyclone supercritical water hot combustion device, when the device is started, firstly, supercritical water which reaches the standard in treatment is injected into the hydrothermal flame generator 5 from the high-pressure organic slurry branch pipe 8, and then is injected into the device main body 2, and at the moment, the high-pressure oxidant transmission pipe 7 is in a closed state;
after supercritical water is filled in the whole device main body 2, the high-pressure organic slurry branch pipe 8 is switched into organic slurry, meanwhile, the high-pressure oxidant transmission pipe 7 is opened to inject oxidant, the organic slurry and the oxidant cause thermal spontaneous combustion ignition in the hydrothermal flame generator 5 and enter the device main body 2 in a flame tongue form, and the spiral flow of fluid in the device main body 2 promotes the flame tongue to start spiral motion;
after ignition, the wall temperature of the device body 2 is controlled to be 500 ℃ or lower by the cooling structure.
Further, when the operation of removing the burnt-out slag slurry is performed, the flow of the burnt-out slag slurry is controlled through the flow control valve 10, the outflow stability of a product which influences the supercritical hot fluid outlet C due to the fact that outflow is too fast is prevented, and the whole process is kept to continuously cool the device main body 2.
Further, the oxidant is liquid oxygen, oxygen or air, and the organic slurry is coal slurry, municipal sludge, oil sludge or petrochemical residue.
Compared with the prior art, the invention has the beneficial effects that:
1. the hydrothermal combustion generators are arranged around the device, and the geometric axes of the outlets of the hydrothermal flame generators are all cut on an imaginary circle at the center of the device, so that flame jet flows of the hydrothermal flame generators form a rotary supercritical water-heating fire ball in the device and are impacted by the slant of high-temperature flame jetted by the upstream hydrothermal flame generator, the ignition condition of organic slurry at the downstream hydrothermal flame generator is superior, and the stable ignition and the reinforced combustion of the organic slurry are facilitated; the rotary supercritical water heat fireball can enable solid phase particles to rotate in the device, so that the flow is prolonged, and the burnout is facilitated. After burning out at the lower part of the device, solid phase particles in the solid-containing supercritical fluid are gathered to the bottom of the burning out slag slurry gathering cone under the action of the rotary centrifugal force; in addition, the micro-porous type after-combustion slag slurry converging cone has a filtering effect on solid-phase particles, so that the high-efficiency self-separation of the after-combustion slag slurry and the supercritical hot fluid is realized.
2. After supercritical hydrothermal combustion, sulfur elements and most of nitrogen elements in the fuel enter the burning slag slurry in the forms of sulfate and nitric acid/nitrite,the separated supercritical liquid phase fluid mainly comprises supercritical water, carbon dioxide, nitrogen and a small amount of residual oxygen, thereby realizing the pollutant NOx、SOxThe source control of the dust can easily realize CO2The method has low cost capture and extremely excellent environmental protection performance.
Drawings
FIG. 1 is a schematic diagram of the structure of the device of the present invention.
FIG. 2 is a schematic view of a hydrothermal flame generator and its arrangement according to the present invention.
Wherein: 1. a high-efficiency cooling jacket; 2. a device main body; 3. the burnt slag slurry is converged and tapered; 4. a supercritical thermal fluid guide cone; 5. a hydrothermal flame generator; 6. a high-pressure organic slurry delivery pipe; 7. a high-pressure oxidant delivery pipe; 8. high pressure organic slurry branch pipes; 9. a high pressure oxidant manifold; 10. a flow regulating valve; A. an inlet of the high-pressure organic slurry transmission and distribution pipe; B. a high pressure oxidant delivery line inlet; C. a supercritical hot fluid outlet; D. an outlet for the burnt slag slurry; E. a cooling water inlet; F. a cooling water outlet; A-I, A-II and A-III are all inlets of high-pressure organic slurry transmission and distribution pipes; B-I, B-II and B-III are all high-pressure oxidant transmission pipe inlets; 5a, 5b, 5c are all hydrothermal flame generators.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention is described in further detail below with reference to the accompanying drawings:
as shown in FIG. 1, the high-pressure organic slurry pipe 6 is divided into a plurality of high-pressure organic slurry inlet branch pipes 8, the high-pressure oxidizer pipe 7 is divided into a plurality of high-pressure oxidizer inlet branch pipes 9, each of the high-pressure organic slurry inlet branch pipes 8 and the high-pressure oxidizer inlet branch pipes 9 is connected to each hydrothermal flame generator 5, and the pressure at the inlet A of the high-pressure organic slurry pipe and the pressure at the inlet B of the high-pressure oxidizer pipe are not lower than 23 MPa. As shown in fig. 2, in the present embodiment, a total of 3 hydrothermal flame generators 5 are uniformly distributed on the upper portion of the hydrothermal combustion apparatus in a special manner, and include a first hydrothermal flame generator 5a, a second hydrothermal flame generator 5B, and a third hydrothermal flame generator 5c, the first hydrothermal flame generator 5a is connected to the first high-pressure organic slurry delivery pipe inlet a-I and the first high-pressure oxidant delivery pipe inlet B-I, the second hydrothermal flame generator 5B is connected to the second high-pressure organic slurry delivery pipe inlet a-II and the second high-pressure oxidant delivery pipe inlet B-II, and the third hydrothermal flame generator 5c is connected to the second high-pressure organic slurry delivery pipe inlet a-III and the third high-pressure oxidant delivery pipe inlet tri B-III. The geometric axes of the output ports of the hydrothermal flame generators are all circumscribed to the imaginary circle of the core combustion area in the device, so that the formation of subsequent spiral flame is ensured. The device main body 2 is wrapped by a jacket structure or a single-layer/multilayer spiral channel structure efficient cooling jacket 1, and cooling water in the cooling jacket 1 enters from a cooling water inlet E at the top and flows out from a cooling water outlet F. The cinder slurry of 2 bottoms of device main part assembles awl 3 and links to each other with supercritical hot-fluid guide awl 4, and the cinder slurry of burning assembles 3 side upper portions of awl and is equipped with a plurality of cinder slurry export D, and supercritical hot-fluid guide awl 4 bottoms are equipped with supercritical hot-fluid export C.
When the device is started, supercritical water (400 ℃, 23MPa for example) reaching the treatment standard is firstly injected from an inlet A of a high-pressure organic slurry transmission pipe, then flows to a high-pressure organic slurry branch pipe 8 through a high-pressure organic slurry transmission pipe 6, is further injected into a hydrothermal flame generator 5, and finally is injected into a device main body 2, wherein a high-pressure oxidant transmission pipe 7 is in a closed state. After the supercritical water is filled in the whole device body 2, the fluid at the inlet A of the high-pressure organic slurry transmission and distribution pipe is switched to organic slurry (taking coal slurry as an example), the high-pressure oxidant transmission and distribution pipe 7 is opened at the same time, oxidant (taking air as an example) at a certain temperature and pressure (such as 550 ℃ and 25MPa) is injected, the coal slurry and the air cause thermal spontaneous combustion ignition in the hydrothermal flame generator 5 and enter the device body 2 in the form of a flare, and meanwhile, due to the configuration mode of the plurality of generators 5, the helical flow of the fluid in the device body 2 causes the flare to start helical motion. After the ignition, a normal temperature coolant (here, the coolant is pure water as an example) is introduced from a coolant inlet E, and the high-efficiency cooling jacket 1 is started to control the wall temperature of the apparatus main body 1 to be 500 ℃.
When the device stably runs, due to the arrangement mode that the geometric axes of the output ports of the hydrothermal flame generators 5 are all circumscribed to the imaginary circle of the core combustion area in the device, the sprayed flame tongues are mutually wound and move downwards in a spiral column shape, and meanwhile, surrounding fluid is driven to rotate in the same direction. Therefore, the flame column continuously exists, and the burning-out slag slurry is continuously deposited at the concave position of the burning-out slag slurry gathering cone 3 through inertia. The coal slurry, the oxidant and the cooling water are continuously introduced into the device according to the set flow rate.
When the device is used for removing the burnt-off slag slurry, the flow of the burnt-off slag slurry is controlled through the flow regulating valve 10, and the phenomenon that the outflow speed influences the outflow stability of the resultant of the supercritical hot fluid outlet C is prevented. The cooling water is kept to cool the apparatus main body 2 continuously throughout the process.
In conclusion, the spiral-flow supercritical hydrothermal combustion device and method are used for combustion of solid phase or solid-containing fuel such as coal, sludge and the like, and pollutant NO can be realizedx、SOxAnd the source control of the dust is carried out,can easily realize CO2The method has low cost capture and extremely excellent environmental protection performance.

Claims (9)

1. The utility model provides a spiral-flow type supercritical water heat combustion device, a serial communication port, include a plurality of hydrothermal flame generators (5) along circumference equipartition in device main part (2) upper portion, be equipped with high-pressure organic thick liquid input branch pipe (8) and high-pressure oxidant input branch pipe (9) on every hydrothermal flame generator (5), the geometric axis of each hydrothermal flame generator (5) delivery outlet all is circumscribed in the hypothetical circle of device kernel combustion area, the lower part of device main part (2) is provided with ashes sediment thick liquid and assembles awl (3), ashes sediment thick liquid assembles awl (3) and links to each other rather than supercritical hot-fluid guide awl (4) of lower part, ashes sediment thick liquid assembles awl (3) side upper portion and is equipped with a plurality of ashes thick liquid exports D, supercritical hot-fluid guide awl (4) bottom is equipped with supercritical hot-fluid export C.
2. The supercritical water hot combustion device of spiral-flow type according to claim 1, characterized in that the device body (2) is wrapped by a high-efficiency cooling jacket (1), the high-efficiency cooling jacket (1) is a jacket structure or a single-layer/multi-layer spiral channel structure, and the coolant is water, air, heat conducting oil, organic slurry or oxidant.
3. The supercritical water hot combustion apparatus of claim 1, wherein the high-pressure organic slurry branch pipe (8) is connected to the high-pressure organic slurry delivery pipe (6), the high-pressure oxidizer branch pipe (9) is connected to the high-pressure oxidizer delivery pipe (7), both the high-pressure organic slurry branch pipe (8) and the high-pressure oxidizer branch pipe (9) are simultaneously connected to the hydrothermal flame generators (5), and the pressure at the inlet a of the high-pressure organic slurry delivery pipe (6) and the pressure at the inlet B of the high-pressure oxidizer delivery pipe (7) are both not lower than 23 MPa.
4. The supercritical water hot combustion device of claim 1, wherein the number of the hydrothermal flame generators (5) is 3 or 4, and the hydrothermal flame generators (5) are arranged in a manner that the ash slag slurry and the supercritical fluid rotate and move downwards to facilitate separation of the ash slag slurry from the supercritical fluid at the ash slag slurry converging cone (3).
5. The supercritical water thermal combustion device of claim 1, wherein the ember slurry gathering cone (3) is a microporous structure with a truncated cone-shaped profile, a large number of micropores are circumferentially distributed on the cone-shaped profile, and a single large hole is opened on the top of the cone-shaped profile or a middle-sized hole is distributed on the top of the cone-shaped profile.
6. The supercritical water thermal combustion device as defined in claim 1, wherein the number of the ember slurry outlets D is 1, 2 or 3, and the ember slurry outlets D are connected to the pilot pipe provided with the flow control valve (10).
7. A cyclone supercritical water thermal combustion method based on a cyclone supercritical water thermal combustion device of claim 1 is characterized in that when the device is started, supercritical water reaching the treatment standard is firstly injected into a hydrothermal flame generator (5) from a high-pressure organic slurry branch pipe (8) and then is injected into a device main body (2), and at the moment, a high-pressure oxidant delivery pipe (7) is in a closed state;
after supercritical water is filled in the whole device main body (2), the high-pressure organic slurry branch pipe (8) is switched into organic slurry, meanwhile, the high-pressure oxidant transmission pipe (7) is opened to inject oxidant, the organic slurry and the oxidant cause thermal spontaneous combustion ignition in the hydrothermal flame generator (5) and enter the device main body (2) in a flame tongue form, and the spiral flow of fluid in the device main body (2) causes the flame tongue to start spiral motion;
after the ignition, the wall temperature of the device body (2) is controlled to be below 500 ℃ by a cooling structure.
8. The supercritical water thermal combustion method as described in claim 7, wherein the flow of the ember slurry is controlled by the flow control valve (10) during the operation of removing the ember slurry, thereby preventing the outflow from being too fast and affecting the stability of the outflow of the product from the supercritical hot fluid outlet C, and the device body (2) is continuously cooled throughout the process.
9. The supercritical water thermal combustion process of claim 7 wherein the oxidant is liquid oxygen, oxygen or air and the organic slurry is coal slurry, municipal sludge, oil sludge or petrochemical residue.
CN202010167659.1A 2020-03-11 2020-03-11 Spiral-flow supercritical water thermal combustion device and method Pending CN111237743A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111999429A (en) * 2020-09-01 2020-11-27 中北大学 Quasi-static simulator for high-temperature fireball
CN114735802A (en) * 2022-03-31 2022-07-12 深圳市华尔信环保科技有限公司 Supercritical water system for nanoparticle preparation coupled organic waste liquid degradation

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111999429A (en) * 2020-09-01 2020-11-27 中北大学 Quasi-static simulator for high-temperature fireball
CN111999429B (en) * 2020-09-01 2022-06-21 中北大学 Quasi-static simulator for high-temperature fireball
CN114735802A (en) * 2022-03-31 2022-07-12 深圳市华尔信环保科技有限公司 Supercritical water system for nanoparticle preparation coupled organic waste liquid degradation
CN114735802B (en) * 2022-03-31 2023-08-22 深圳市华尔信环保科技有限公司 Supercritical water system for degrading coupled organic waste liquid by nano-particle preparation

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