CN111018087A - Lining pipe of supercritical water oxidation system reactor and preparation method - Google Patents

Lining pipe of supercritical water oxidation system reactor and preparation method Download PDF

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Publication number
CN111018087A
CN111018087A CN201911370601.0A CN201911370601A CN111018087A CN 111018087 A CN111018087 A CN 111018087A CN 201911370601 A CN201911370601 A CN 201911370601A CN 111018087 A CN111018087 A CN 111018087A
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layer
lining pipe
pipe
pore diameter
average pore
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CN111018087B (en
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宋晓抗
王四芳
王昕彤
李心砚
李昕
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China First Heavy Industries Co Ltd
CFHI Dalian Engineering and Technology Co Ltd
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China First Heavy Industries Co Ltd
CFHI Dalian Engineering and Technology Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/03—Pressure

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  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)

Abstract

The inner lining pipe of the supercritical water oxidation system reactor is characterized in that holes in the pipe wall of the inner lining pipe are divided into more than two layers according to the average pore diameter, the holes are distributed in a gradient manner layer by layer, the gradient distribution layer by layer comprises the radial gradient distribution along the inner lining pipe or the axial gradient distribution along the inner lining pipe, and the radial gradient distribution along the inner lining pipe is that the average pore diameter of the holes in the pipe wall is gradually reduced layer by layer from the inner layer to the outer layer along the radial direction of the inner lining; the average pore diameter of the pores on the pipe wall is gradually increased from the bottom layer to the top layer along the axial direction of the lining pipe. The beneficial effects are that: the radial multilayer gradient inner lining pipe can obtain a high-quality water film under the condition of lower internal and external pressure difference, and is not easy to block. The interior bushing pipe of axial multilayer gradient, the lower part water film is even about interior bushing pipe, enables the upper water film thicker even, satisfies the high temperature environment requirement of supercritical water on upper portion, guarantees the life of interior bushing pipe. The lining pipe system has low energy consumption, safety, reliability, stable continuous operation and low operation cost.

Description

Lining pipe of supercritical water oxidation system reactor and preparation method
Technical Field
The invention belongs to the technical field of chemical machinery, and particularly relates to a supercritical water oxidation system reactor.
Background
The supercritical water oxidation system reactor is a closed double-layer container, the outer layer is a shell, the inner layer is a lining pipe, and a gap, generally called a partition wall, exists between the shell and the lining pipe. The lining pipe is made of porous material, and the average pore diameter of the lining pipe is the same. Softened water is introduced into the partition wall. Because the inside and outside of the porous wall of the lining pipe have pressure difference, the softened water is gathered on the inner surface of the porous wall through the porous gaps of the lining pipe wall under the pushing of the pressure difference to form a protective water film. The water film can isolate corrosive substances and inorganic salts in fluid in the lining pipe from contacting with the lining pipe wall, and provides corrosion reduction and low-temperature protection effects for the lining pipe. On the other hand, the water film, while providing corrosion reduction and low temperature protection, also reduces the temperature of the reaction fluid, dilutes the concentration of the reaction fluid, affects the reaction rate and reaction temperature, and reduces the treatment effect of the reactor. Therefore, the quality of the water film is a key factor for the function of the evaporation wall reactor. The defects of the lining pipe in the prior art are as follows: because the length of an industrial reactor is usually very long, the phenomenon of uneven water films can occur on the inner wall of the porous lining pipe under the influence of hydrostatic pressure difference, the water films on the upper part are thin, and the water films on the lower part are thick. The upper part of the reactor is the main area of the oxidation reaction and is a supercritical water environment with high temperature and high pressure. The violent chemical reaction makes the convection diffusion and mixing action between the main fluid and the water film stronger, so that the water film is damaged, the wall dryness condition is generated, the wall of the lining pipe is damaged, and a new lining pipe needs to be replaced.
Disclosure of Invention
The invention aims to provide a lining pipe with the average pore diameter distributed in a gradient manner for a supercritical water oxidation system reactor, which overcomes the defects of the prior art.
In order to achieve the purpose, the technical scheme of the invention is as follows: a lining pipe of a supercritical water oxidation system reactor is made of porous materials, and the thickness of the pipe wall of the lining pipe is 2-5 mm, and is characterized in that; the holes on the pipe wall of the lining pipe are divided into more than two layers according to the average pore diameter, and are distributed in a gradient manner layer by layer, the gradient distribution manner layer by layer comprises the gradient distribution along the radial direction of the lining pipe or the gradient distribution along the axial direction of the lining pipe, and the gradient distribution along the radial direction of the lining pipe is that the average pore diameter of the holes on the pipe wall is gradually reduced from an inner layer to an outer layer along the radial direction of the lining pipe; the average pore diameter of the holes on the pipe wall is gradually increased from the bottom layer to the top layer along the axial direction of the lining pipe.
The invention relates to a lining pipe of a supercritical water oxidation system reactor, which is characterized in that: the average pore diameter of the pores on the pipe wall is gradually reduced from the inner layer to the outer layer along the radial direction of the lining pipe, and the pore diameters of the layers are respectively as follows: the average pore diameter on the inner layer is 5-40 mu m, the thickness is 1-2 mm, the average pore diameter on the outer layer is 0.2-3 mu m, the thickness is 0.5-1 mm, the average pore diameter of each radial middle layer between the inner layer and the outer layer is 2-10 mu m, and the average porosity of each layer is 10% -35%; the average pore diameter of the pores on the pipe wall increases from the bottom layer to the top layer by layer along the axial direction of the lining pipe, and the pore diameters of the layers are respectively as follows: the average pore diameter on the bottom layer is 0.2-3 mu m, the average pore diameter on the top layer is 5-40 mu m, the average pore diameter of each axial middle layer between the bottom layer and the top layer is 2-10 mu m, the average porosity on each layer is 10-35%, and the thickness of each layer satisfies the following formula:
△Pis vertical∶△PRadial direction＝1∶10～20
Wherein
△PIs verticalIs the hydrostatic column pressure difference of the water column in the vertical direction of the lining pipe,
ΔPis vertical＝ρgΔH
Where ρ is the fluid density, g is the gravitational acceleration, △ H is the hydrostatic column height difference,
△Pradial directionIs the radial osmotic pressure drop of the lining pipe, the radial osmotic pressure drop meets Darcy's law,
Figure BDA0002339563690000021
where α is the viscosity coefficient, β is the inertia coefficient, s is the porous tube thickness, μ is the kinetic viscosity, V is the fluid volumetric flow rate, a is the fluid flow area, and ρ is the fluid density.
The invention relates to a lining pipe of a supercritical water oxidation system reactor, which is characterized in that: the porous material is a porous ceramic material, a porous SiC material, a porous titanium alloy material, a porous nickel-based alloy material or a porous stainless steel material.
The invention relates to a lining pipe of a supercritical water oxidation system reactor, which is characterized in that: each layer of the lining pipe is made of the same material or different materials.
The invention relates to a preparation method of a lining pipe of a supercritical water oxidation system reactor, which is characterized by comprising the following steps: the preparation method comprises the following steps:
1) preparing a base tube layer according to the average pore diameter of any one layer of the multilayer lining tube by a powder metallurgy method or a greenware firing method;
2) if the base pipe layer is an inner layer or a bottom layer, preparing an outer layer or an upper layer of pipe layer adjacent to the base pipe layer on the outer wall or the top surface of the base pipe layer by using a powder metallurgy method, a metal spraying method, a metal coating method or a ceramic blank firing method; if the base tube layer is an outer layer or a top layer, preparing an inner layer or a lower layer tube layer adjacent to the base tube layer on the inner wall or the lower surface of the base tube layer by using a powder metallurgy method, a metal spraying method, a metal coating method or a ceramic blank firing method; if the base tube layer is a layer of each radial middle layer between the inner layer and the outer layer or each axial middle layer between the bottom layer and the top layer, preparing an inner tube layer, an outer tube layer or an upper tube layer and a lower tube layer which are adjacent to the base tube layer on the inner wall, the outer wall or the upper surface and the lower surface of the base tube layer by using a powder metallurgy method, a metal spraying method, a metal coating method or a ceramic blank firing method;
3) and (4) continuously preparing the rest tube layers according to the method in the step 2 until all the tube layers are completely prepared.
The invention has the beneficial effects that:
the porous composite lining pipe with radial multilayer gradient has good permeability, can ensure that the inner wall of the lining pipe obtains a high-quality water film under the condition of low internal and external pressure difference, and is not easy to block. The porous composite lining pipe with the axial multilayer gradient can ensure that even water films are formed on the upper and lower parts of the lining pipe under a certain internal and external pressure difference, even the upper water film is thicker, the requirement of the high-temperature environment of supercritical water on the upper part is met, and the service life of the lining pipe is ensured. The lining pipe system has low energy consumption, safety, reliability, stable continuous operation and low operation cost.
Drawings
FIG. 1 is a schematic diagram of a reactor of an evaporative wall-type supercritical water oxidation system;
FIG. 2 is a schematic view of the structure of a lining tube with three layers of gradient pore sizes;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a schematic structural view of a lining tube with three layers of gradient pore sizes.
In the figure: 1. high temperature bolts; 2. pressing a ring; 3. a gasket; 4. a lower end cover; 5. a soft seal gasket; 6. an outer cylinder of the reactor; 7. a liner tube; 8. an upper end cover; 9. an integrated thermometer; 10. a softened water inlet; 11. an oxidant inlet; 12. an organic waste liquid inlet; 13. a liquid discharge outlet; 701. an inner layer; 702. a radial middle layer; 703. an outer layer; 711. a bottom layer; 712. an axial middle layer; 713. a top layer.
Detailed Description
The invention is further explained below with reference to the drawings and examples.
The inner lining pipe of the supercritical water oxidation system reactor is characterized in that the inner lining pipe 7 is made of porous materials, the pipe wall thickness of the inner lining pipe 7 is 2-5 mm, holes in the pipe wall of the inner lining pipe 7 are divided into more than two layers according to the average pore diameter, the holes are distributed in a gradient manner layer by layer and comprise radial gradient distribution along the inner lining pipe or axial gradient distribution along the inner lining pipe, and the radial gradient distribution along the inner lining pipe is that the average pore diameter of the holes in the pipe wall is gradually reduced layer by layer from the inner layer; the gradient distribution along the axial direction of the lining pipe is that the average pore diameter of the pores on the pipe wall is gradually increased from the bottom layer 711 to the top along the axial direction of the lining pipe. The average pore diameter of the pores on the pipe wall is respectively as follows along the radial direction of the lining pipe from the inner layer 701 to the outer layer by layer: the average pore diameter of the inner layer 701 is 5-40 μm, the thickness is 1-2 mm, the average pore diameter of the outer layer 703 is 0.2-3 μm, the thickness is 0.5-1 mm, the average pore diameter of each radial middle layer (702) between the inner layer and the outer layer is 2-10 μm, and the average porosity of each layer is 10% -35%; the average pore diameter of the pores on the pipe wall increases from the bottom layer 711 to the upper layer by layer along the axial direction of the lining pipe, and the pore diameters of the layers are respectively as follows: the average pore diameter on the bottom layer 711 is 0.2-3 μm, the average pore diameter on the top layer 713 is 5-40 μm, the average pore diameter of each axial middle layer 712 between the bottom layer and the top layer is 2-10 μm, the average porosity on each layer is 10% -35%, and the thickness of each layer satisfies the following formula:
△Pis vertical∶△PRadial direction＝1∶10～20
Wherein
△PIs verticalIs the hydrostatic column pressure difference of the water column in the vertical direction of the lining pipe,
ΔPis vertical＝ρgΔH
Where ρ is the fluid density, g is the gravitational acceleration, △ H is the hydrostatic column height difference,
△Pradial directionThe radial osmotic pressure drop of the lining pipe meets Darcy's law:
Figure BDA0002339563690000041
where α is the viscosity coefficient, β is the inertia coefficient, s is the liner thickness, μ is the kinetic viscosity, V is the fluid volume flow rate, a is the fluid flow area, and ρ is the fluid density.
The porous material is a porous ceramic material, a porous SiC material, a porous titanium alloy material, a porous nickel-based alloy material or a porous stainless steel material. The layers of the lining pipe are made of the same material or different materials.
The preparation method of the lining pipe comprises the following steps:
1) preparing a base tube layer according to the average pore diameter of any one layer of the multilayer lining tube by a powder metallurgy method or a greenware firing method;
2) if the base tube layer is the inner layer 701 or the bottom layer 711, preparing an outer layer or an upper layer adjacent to the base tube layer on the outer wall or the top surface of the base tube layer by using a powder metallurgy method, a metal spraying method, a metal coating method or a ceramic blank firing method; if the base tube layer is the outer layer 703 or the top layer 713, preparing an inner layer or a next tube layer adjacent to the base tube layer on the inner wall or the lower surface of the base tube layer by using a powder metallurgy method, a metal spraying method, a metal coating method or a ceramic blank firing method; if the base tube layer is one layer of each radial middle layer 702 between the inner layer 701 and the outer layer 703) or each axial middle layer 712 between the bottom layer 711 and the top layer 713, preparing an inner tube layer, an outer tube layer or an upper tube layer and a lower tube layer adjacent to the base tube layer on the inner wall, the outer wall, the upper surface and the lower surface of the base tube layer simultaneously by using a powder metallurgy method, a metal spraying method, a metal coating method or a greenware firing method;
3) and (4) continuously preparing the rest tube layers according to the method in the step 2 until all the tube layers are completely prepared.
Example 1
Is a radial multilayer gradient lining tube. The thickness of the lining pipe is 2-5 mm, and three layers of gradients are adopted in the radial direction. The average pore diameter of the outer layer 703 of the lining pipe is 0.2-3 μm, the porosity is 10-35%, and the thickness is 0.5-1 mm; the average pore diameter of the radial middle layer 702 is 2-10 μm, the porosity is 10-35%, and the thickness is 1-2 mm; the inner layer 701 of the lining pipe has an average pore diameter of 5-40 μm, a porosity of 10-35% and a thickness of 1-2 mm. The three layers of porous materials of the lining pipe are made of the same ceramic material and are prepared by firing a ceramic blank.
Example 2
Is an axial three-layer gradient lining pipe. The length of the lining pipe is within 2m, three layers of gradients are axially arranged, and the hole diameter from top to bottom is designed according to Darcy's law and static pressure difference in the vertical direction. The average pore diameter of the top layer 713 of the lining pipe is 5-40 μm, the porosity is 10-35%, and the length is 20-40% of the total length of the lining pipe; the average pore diameter of the axial middle layer 712 is 2-10 μm, the porosity is 10-35%, and the length is 20-40% of the total length of the lining pipe; the average pore diameter of the lower layer 711 of the lining pipe is 0.2-3 μm, the porosity is 10-35%, and the length is 20-40% of the total length of the lining pipe. The three layers of porous materials of the lining pipe are made of porous nickel-based alloy materials and are prepared by sintering layer by using a powder metallurgy method.
Example 3
The tube was the same as in example 1, except that the material of the inner liner tube was a porous titanium alloy material. The preparation method is a powder metallurgy method and comprises the following specific steps:
(1) dividing Ti powder into three grades according to the particle sizes, wherein the granularity is respectively; the thickness of the material is 0-15 microns, the thickness of the material is 15-50 microns, the thickness of the material is 50-150 microns, the material is named as the material a with the finest Ti powder particles, the material b with the middle Ti powder particles and the material c with the coarsest Ti powder particles from small to large;
(2) filling the material c into a gap between the core rod and the rubber sleeve 1 by using a tool;
(3) compacting the filled material c in an isostatic pressing mode, and removing the rubber sleeve 1 after pressing;
(4) putting the core rod and the compacted material c into a vacuum furnace for sintering;
(5) after sintering, filling the material b into a gap between the material c and the rubber sleeve 2 by using a tool;
(6) compacting the filled material b in an isostatic pressing mode, and removing the rubber sleeve 2 after pressing;
(7) putting the core rod, the material c and the compacted material b into a vacuum furnace for sintering;
(8) after sintering, filling the material a into a gap between the material b and the rubber sleeve 3 by using a tool;
(9) compacting the filled material a in an isostatic pressing mode, and removing the rubber sleeve 3 after pressing;
(10) and (3) putting the core rod, the material bc and the compacted material a into a vacuum furnace for sintering, and obtaining the porous lining pipe with three layers of radial gradient pore diameter distribution after sintering.

Claims (5)

1. A lining pipe of a supercritical water oxidation system reactor is characterized in that a lining pipe (7) is made of porous materials, and the thickness of the pipe wall of the lining pipe (7) is 2-5 mm; the holes on the pipe wall of the lining pipe (7) are divided into more than two layers according to the average pore diameter, the holes are distributed in a gradient manner layer by layer, the gradient distribution manner layer by layer comprises the gradient distribution along the radial direction of the lining pipe or the gradient distribution along the axial direction of the lining pipe, and the gradient distribution along the radial direction of the lining pipe is that the average pore diameter of the holes on the pipe wall is gradually reduced layer by layer from an inner layer (701) to the outer layer along the radial direction of the lining pipe; the gradient distribution along the axial direction of the lining pipe is that the average pore diameter of the pores on the pipe wall is increased layer by layer from the bottom layer (711) to the top along the axial direction of the lining pipe.
2. The supercritical water oxidation system reactor liner tube of claim 1, wherein: the average pore diameter of the pores on the pipe wall is gradually reduced from the inner layer (701) to the outer layer along the radial direction of the lining pipe, and the pore diameters of the layers are respectively as follows: the average pore diameter on the inner layer (701) is 5-40 mu m, the thickness is 1-2 mm, the average pore diameter on the outer layer (703) is 0.2-3 mu m, the thickness is 0.5-1 mm, the average pore diameter of each radial middle layer (702) between the inner layer and the outer layer is 2-10 mu m, and the average porosity of each layer is 10-35%; the average pore diameter of the pores on the pipe wall is increased layer by layer from the bottom layer (711) upwards along the axial direction of the lining pipe, and the pore diameters of the layers are respectively as follows: the average pore diameter on the bottom layer (711) is 0.2-3 mu m, the average pore diameter on the top layer (713) is 5-40 mu m, the average pore diameter of each axial middle layer (712) between the bottom layer and the top layer is 2-10 mu m, the average porosity on each layer is 10% -35%, and the thickness of each layer satisfies the following formula:
△Pis vertical∶△PRadial direction＝1∶10～20
Wherein
△PIs verticalIs insideThe hydrostatic column pressure difference of the water column in the vertical direction of the liner tube,
ΔPis vertical＝ρgΔH
Where ρ is the fluid density, g is the gravitational acceleration, △ H is the hydrostatic column height difference
△PRadial directionIs the radial osmotic pressure drop of the lining pipe, the radial osmotic pressure drop meets Darcy's law,
Figure FDA0002339563680000011
where α is the viscosity coefficient, β is the inertia coefficient, s is the liner thickness, μ is the kinetic viscosity, V is the fluid volume flow rate, a is the fluid flow area, and ρ is the fluid density.
3. The supercritical water oxidation system reactor liner tube of claim 2, wherein: the porous material is a porous ceramic material, a porous SiC material, a porous titanium alloy material, a porous nickel-based alloy material or a porous stainless steel material.
4. The supercritical water oxidation system reactor liner tube of claim 3, wherein: each layer of the lining pipe is made of the same material or different materials.
5. The method for preparing the lining pipe of the supercritical water oxidation system reactor as claimed in claims 1 to 4, wherein: the preparation method comprises the following steps:
1) preparing a base tube layer according to the average pore diameter of any one layer of the multilayer lining tube by a powder metallurgy method or a greenware firing method;
2) if the base pipe layer is an inner layer (701) or a bottom layer (711), preparing an outer layer or an upper layer adjacent to the base pipe layer on the outer wall or the top surface of the base pipe layer by using a powder metallurgy method, a metal spraying method, a metal coating method or a ceramic blank firing method; if the base tube layer is the outer layer (703) or the top layer (713), preparing an inner layer or a next tube layer adjacent to the base tube layer on the inner wall or the lower surface of the base tube layer by using a powder metallurgy method, a metal spraying method, a metal coating method or a ceramic blank firing method; if the base tube layer is one layer of each radial middle layer (702) between the inner layer (701) and the outer layer (703) or each axial middle layer (712) between the bottom layer (711) and the top layer (713), preparing an inner tube layer and an outer tube layer or an upper tube layer and a lower tube layer which are adjacent to the base tube layer on the inner wall and the outer wall or the upper surface and the lower surface of the base tube layer by using a powder metallurgy method, a metal spraying method, a metal coating method or a ceramic blank firing method;
3) and (4) continuously preparing the rest tube layers according to the method in the step 2 until all the tube layers are completely prepared.
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Publication number Priority date Publication date Assignee Title
CN111781130A (en) * 2020-07-06 2020-10-16 西安交通大学 Flowing corrosion-salt deposition online test system and method used in supercritical water treatment environment
CN114225837A (en) * 2021-12-22 2022-03-25 一重集团大连工程技术有限公司 Composite lining pipe of supercritical water oxidation system reactor

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CN109052614A (en) * 2018-07-19 2018-12-21 西安交通大学 A kind of system and method evaporating wall type reactor water film coverage rate for adjusting supercritical water oxidation
US20190248685A1 (en) * 2016-09-06 2019-08-15 Guangzhou Institute Of Advanced Technology, Chinese Academy Of Sciences Reactor and reaction system based on supercritcal water oxidation, and phenolic wastewater treatment method
CN110124584A (en) * 2019-06-19 2019-08-16 广西大学 A kind of tubular type evaporation wall reactor for supercritical water oxidation processing

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JPH09299966A (en) * 1996-03-15 1997-11-25 Japan Organo Co Ltd Supercritical water oxidizing method and device therefor
CN1834569A (en) * 2005-03-19 2006-09-20 富准精密工业(深圳)有限公司 Heat pipe, heat pipe multiporous structure and its mfg. method
CN105251375A (en) * 2015-11-19 2016-01-20 肖汉宁 Preparation method of multilayered gradient ceramic membrane
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Publication number Priority date Publication date Assignee Title
CN111781130A (en) * 2020-07-06 2020-10-16 西安交通大学 Flowing corrosion-salt deposition online test system and method used in supercritical water treatment environment
CN111781130B (en) * 2020-07-06 2021-10-22 西安交通大学 Flowing corrosion-salt deposition online test system and method used in supercritical water treatment environment
CN114225837A (en) * 2021-12-22 2022-03-25 一重集团大连工程技术有限公司 Composite lining pipe of supercritical water oxidation system reactor
CN114225837B (en) * 2021-12-22 2024-01-02 一重集团大连工程技术有限公司 Composite lining pipe of supercritical water oxidation system reactor

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