Lining structure of chemical waste gas and waste liquid incinerator

Abstract

The utility model discloses a lining structure of a chemical waste gas and waste liquid incinerator. The lining structure comprises a waste liquid incinerator lining, a waste gas incinerator lining, a waste heat utilization area lining and a waste gas circulation area lining. The waste liquid incinerator, the waste gas incinerator and the waste heat utilization area lining are all of a medium-high temperature section structure. The waste gas circulation area lining is of a medium-low temperature section structure; the medium-high temperature section structure comprises a fire-resistant and corrosion-resistant layer, a heat insulating layer, a first heat preservation layer and a second heat preservation layer which are sequentially arranged from inside to outside; the medium-low temperature section structure comprises a refractory layer, a first heat preservation layer and a second heat preservation layer which are sequentially arranged from inside to outside. According to the utility model, the lining material can be prevented from being damaged by media and smoke in a high-temperature and strong-corrosion internal environment, and the purposes of reducing the surface temperature of equipment and ensuring the reliability and the stability of the equipment are achieved.

Description

Technical Field

[0001] The utility model relates to an inner lining structure of an incinerator, in particular to an inner lining structure of a chemical waste gas and waste liquid incinerator. Background Art

[0002] The petroleum, chemical, building materials, printing and dyeing, and biopharmaceutical industries, especially the chemical industry, generate large amounts of organic waste gas and waste liquid during production. These gases or liquids contain some flammable components or hazardous substances. If these substances are directly discharged into the environment, they will not only waste energy, but also damage the natural ecological environment on which humans depend for survival and endanger human life and health. Therefore, it is imperative for petroleum, chemical and other companies to properly handle waste gas and waste liquid.

[0003] Currently, the main methods for treating organic waste are activated carbon adsorption and incineration. However, activated carbon adsorption is ineffective, with its adsorption capacity rapidly depleting. Incineration, as the most thorough method for reducing waste, recycling it, and rendering it harmless, has been widely adopted.

[0004] Waste gases and liquids enter the incinerator for purification and combustion before being discharged, reducing the environmental impact of harmful gases and recycling heat to reduce energy consumption. Due to the complex composition of waste gases and liquids and the high combustion temperatures within the furnace, which can reach over 1,000 degrees Celsius at its highest, the selection of steel for the incinerator's outer shell presents significant challenges. Therefore, a refractory, heat-insulating lining is required within the outer shell to prevent damage to the steel and lining from the flue gases.

[0005] At present, the lining structure of incinerators is usually refractory bricks or thermal insulation materials; however, the flue gas composition in the incinerator is complex, and the acidic gases and high-temperature slag formed by combustion will cause corrosion, penetration, erosion and other problems to the refractory insulation materials, which will lead to damage to the lining and ultimately damage the outer shell steel plate. Summary of the Invention

[0006] The purpose of the utility model is to address the above-mentioned deficiencies in the prior art and provide a lining structure for a chemical waste gas and waste liquid incinerator, which can prevent the medium and flue gas from damaging the lining material in a high-temperature, highly corrosive internal environment, thereby achieving the purpose of reducing the surface temperature of the equipment and ensuring the reliability and stability of the equipment.

[0007] In order to achieve the above-mentioned purpose, the utility model provides a lining structure for a chemical waste gas and waste liquid incinerator, including a waste liquid incinerator lining, a waste gas incinerator lining, a waste heat utilization area lining, and a waste gas circulation area lining; the characteristics are: the linings of the waste liquid incinerator, the waste gas incinerator, and the waste heat utilization area are all medium-high temperature section structures; the lining of the waste gas circulation area is a medium-low temperature section structure; the medium-high temperature section structure includes a refractory and corrosion-resistant layer, a heat-insulating layer, a first thermal insulation layer, and a second thermal insulation layer arranged in sequence from the inside to the outside; the medium-low temperature section structure includes a refractory layer, a first thermal insulation layer, and a second thermal insulation layer arranged in sequence from the inside to the outside;

[0008] The above-mentioned refractory and corrosion-resistant layer is zirconium chromium corundum castable / brick or chrome corundum castable / brick; the refractory layer is refractory castable / brick; the insulation layer is lightweight refractory castable / brick or insulation castable / brick; the first insulation layer is high temperature resistant insulation product or insulation castable / brick, such as insulation castable, aluminum silicate refractory fiber blanket; the second insulation layer is low thermal conductivity insulation board, such as nano-level insulation board

[0009] The fire-resistant and corrosion-resistant layer and the fire-resistant layer in the utility model can resist the corrosion of high temperature and acid and alkali substances and resist impact, so as to effectively protect the outer insulation layer and prevent the medium and smoke from damaging the lining material; the thermal insulation layer serves as a transition layer between the fire-resistant and corrosion-resistant layer and the insulation layer, which not only reduces the temperature to the effective use temperature range of the insulation layer, but also serves as a fire barrier layer to compensate for the damage caused by cracks in the fire-resistant and corrosion-resistant layer to the insulation layer; the two insulation layers can reduce the heat dissipation loss of the equipment, reduce the surface temperature of the shell to an allowable range, and ensure the reliability and stability of the equipment;

[0010] As a further improvement of the present invention, in the same structure: the thickness of the first insulation layer is greater than that of the second insulation layer; the first insulation layer is the main insulation layer, which needs to have a certain strength and insulation performance, and while effectively reducing the temperature, it also needs to be able to withstand a certain intensity of internal pressure impact in the equipment; the second insulation layer is an auxiliary insulation layer, which uses an insulation material with low thermal conductivity to further reduce the temperature and ensure the safety of the shell;

[0011] As a further improvement of the present invention, the medium and high temperature section structure of the side wall and bottom of the lining of the waste liquid incinerator and the bottom of the lining of the waste gas incinerator is a load-bearing medium and high temperature section structure, and its fire-resistant and corrosion-resistant layer and insulation layer are brick wall structures; the medium and low temperature section structure of the lining top in the waste gas flow area is a load-bearing medium and low temperature section structure, and its fire-resistant layer is a brick wall structure; the brick wall structure can play a load-bearing support role;

[0012] As a further improvement of the present invention, an axial middle partition wall and a radial chessboard wall are provided in the rear section of the lining of the waste gas incinerator, and the chessboard wall is provided with a plurality of axial through holes; this can promote the turbulent mixing of the high-temperature flue gas in the furnace, so that the reaction of the combustible waste gas and waste liquid in the furnace is more complete;

[0013] In summary, the utility model can prevent the medium and smoke from damaging the lining material in a high-temperature, highly corrosive internal environment, thereby achieving the purpose of reducing the surface temperature of the equipment and ensuring the reliability and stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of an embodiment of the present utility model.

[0015] Figure 2 for Figure 1 A cross-sectional view of the load-bearing medium and high temperature section structure 5.

[0016] Figure 3 for Figure 1 A cross-sectional view of the medium and high temperature section structure 6.

[0017] Figure 4 for Figure 1 A cross-sectional view of the load-bearing medium and low temperature section structure 7.

[0018] Figure 5 for Figure 1 A cross-sectional view of the medium and low temperature section structure 8.

[0019] Figure 6 for Figure 1 Partial view from the center A direction.

[0020] Figure 7 for Figure 6 Cross-sectional view of the middle chessboard wall 9.

[0021] Figure 8 for Figure 6 Cross-sectional view of the partition wall 10 DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] like Figures 1 to 6As shown, a lining structure of a chemical waste gas and waste liquid incinerator of this embodiment includes a waste liquid incinerator lining 1, a waste gas incinerator lining 2, a waste heat utilization area lining 3 and a waste gas circulation area lining 4. The waste liquid incinerator lining 1 includes a vertical section and a horizontal section connected together, and the waste gas circulation area lining 4 includes a horizontal section and three vertical sections connected together; wherein the side walls and the bottom of the waste liquid incinerator body 1 and the bottom of the waste gas incinerator lining 2 are all load-bearing medium and high temperature section bottom surface structures 5; the remaining surfaces of the waste liquid incinerator lining 1 and the waste gas The remaining surfaces of the incinerator lining 2 and the surfaces of the lining 3 in the waste heat utilization area are all medium and high temperature section structures 6; the bottom of the horizontal section of the lining 4 in the exhaust gas circulation area is a load-bearing medium and low temperature section structure 7, and the remaining surfaces of the lining 4 in the exhaust gas circulation area are all medium and low temperature section structures 8; the load-bearing medium and high temperature section structure 5 includes a fire-resistant and corrosion-resistant layer 5-4, a heat-insulating layer 5-3, a first thermal insulation layer 5-2 and a second thermal insulation layer 5-1 arranged in sequence from the inside to the outside. The thickness of the first thermal insulation layer 5-2 is greater than that of the second thermal insulation layer 5-1. The fire-resistant and corrosion-resistant layer 5-4 is larger than that of the second thermal insulation layer 5-1. -4, the insulation layer 5-3 is a brick wall structure; the medium and high temperature section structure 6 includes a fire-resistant and corrosion-resistant layer 6-4, an insulation layer 6-3, a first thermal insulation layer 6-2 and a second thermal insulation layer 6-1 arranged in sequence from the inside to the outside, the thickness of the first thermal insulation layer 6-2 is greater than the thickness of the second thermal insulation layer 6-1, and the fire-resistant and corrosion-resistant layer 6-4 and the insulation layer 6-3 are castable structures; the load-bearing medium and low temperature section structure 7 includes a fire-resistant layer 7-3, a first thermal insulation layer 7-2 and a second thermal insulation layer 7-1 arranged in sequence from the inside to the outside, the thickness of the first thermal insulation layer 7-2 is greater than the thickness of the second thermal insulation layer 6-1. The thickness of the second insulation layer 7-1 is greater than that of the fire-resistant layer 7-3, and the fire-resistant layer 7-3 is a brick wall structure; the medium and low temperature section structure 8 includes a fire-resistant layer 8-3, a first insulation layer 8-2 and a second insulation layer 8-1 arranged in sequence from the inside to the outside, the thickness of the first insulation layer 8-2 is greater than that of the second insulation layer 8-1, and the fire-resistant layer 8-3 is a castable structure; an axial middle partition wall 10 and a radial chessboard wall 9 are provided in the rear section of the waste gas incinerator lining 2, and the chessboard wall 9 is provided with a plurality of axial through holes, and the middle partition wall 10 is connected to the middle part of the rear end surface of the chessboard wall 9;

[0024] The above-mentioned refractory and corrosion-resistant layers 5-4 and 6-4 can be zirconium-chromium corundum bricks / castables / or chrome corundum bricks / castables; the refractory layers 7-3 and 8-3 are shaped refractory bricks / unshaped refractory castables; the insulation layers 5-3 and 6-3 are also divided into products and castables, including but not limited to lightweight refractory bricks, insulating bricks, lightweight refractory castables, insulating castables, etc.; the first insulation layer can be a high-temperature resistant insulation product, such as insulation castables / bricks, aluminum silicate refractory fiber blankets (felt, boards); the second insulation layer is a low thermal conductivity insulation board, such as a nano-scale insulation board; the chessboard wall 9 and the middle partition wall 10 are corundum mullite wear-resistant castables / bricks;

[0025] The waste liquid and waste gas incinerators in the chemical industry are subject to harsh working conditions such as high temperature, high pressure, and strong corrosion. The fire-resistant and corrosion-resistant layers 5-4 and 6-4 in the present invention can resist high temperature and the corrosion of acid and alkali substances and resist impact, so as to effectively protect the outer insulation layer and prevent the medium and flue gas from damaging the lining material. The insulation layers 5-3 and 6-3 serve as transition layers between the fire-resistant layer and the insulation layer, which not only reduce the temperature to the effective operating temperature range of the insulation layer, but also serve as fire barriers to compensate for the damage caused by cracks in the fire-resistant and corrosion-resistant layers 5-4 and 6-4 to the insulation layer. The two layers of insulation layers arranged on the outside can reduce the heat dissipation loss of the equipment, reduce the surface temperature of the outer shell steel to the allowable range, and ensure the reliability and stability of the equipment.

[0026] In the same structure: the thickness of the first insulation layer is greater than that of the second insulation layer. The first insulation layer, as the main insulation layer, needs to have a certain strength and insulation performance. While effectively reducing the temperature, it also needs to be able to withstand a certain intensity of internal pressure impact in the equipment. The second insulation layer is an auxiliary insulation layer and adopts an insulation material with low thermal conductivity to further reduce the temperature and ensure the safety of the shell; the side walls and bottom of the waste liquid incinerator body 1, the bottom of the waste gas incinerator lining 2 and the bottom of the horizontal section of the lining 4 in the waste gas flow area need to consider a certain load-bearing support function, and its fire-resistant and corrosion-resistant layer or fire-resistant layer or insulation layer is set to a hard brick wall structure;

[0027] The chessboard wall 9 and the middle partition wall 10 can promote the turbulent mixing of the high-temperature flue gas in the furnace, so that the reaction of the combustible waste gas and waste liquid in the furnace is more complete;

[0028] The above embodiments have been used for illustration, but it should be understood that the above embodiments are only used for the purpose of example and description, and are not intended to limit the present invention to the scope of the described embodiments.

Claims

1. A lining structure for a chemical waste gas and waste liquid incinerator, comprising a waste liquid incinerator lining, a waste gas incinerator lining, a waste heat utilization area lining, and a waste gas circulation area lining; characterized in that: The linings of the waste liquid incinerator, waste gas incinerator and waste heat utilization area are all medium and high temperature section structures; the lining of the waste gas circulation area is a medium and low temperature section structure; the medium and high temperature section structure includes a refractory and corrosion-resistant layer, a heat-insulating layer, a first thermal insulation layer and a second thermal insulation layer arranged in sequence from the inside to the outside; the medium and low temperature section structure includes a refractory layer, a first thermal insulation layer and a second thermal insulation layer arranged in sequence from the inside to the outside.

2. The lining structure of a chemical waste gas and waste liquid incinerator according to claim 1, characterized in that: The fire-resistant and corrosion-resistant layer is zirconium-chromium-corundum castable / brick or chrome-corundum castable / brick; the refractory layer is refractory castable / brick; the insulation layer is lightweight refractory castable / brick or insulating castable / brick; the first insulation layer is high-temperature resistant insulation product or insulation castable / brick; the second insulation layer is low thermal conductivity insulation board.

3. The lining structure of a chemical waste gas and waste liquid incinerator according to claim 1 or 2, characterized in that: In the same structure: the thickness of the first thermal insulation layer is greater than that of the second thermal insulation layer.

4. The lining structure of a chemical waste gas and waste liquid incinerator according to claim 1 or 2, characterized in that: The medium and high temperature section structure of the side walls and bottom of the lining of the waste liquid incinerator and the bottom of the lining of the waste gas incinerator is a load-bearing medium and high temperature section structure, and its refractory and corrosion-resistant layer and insulation layer are brick wall structures; the medium and low temperature section structure of the lining top in the waste gas circulation area is a load-bearing medium and low temperature section structure, and its refractory layer is a brick wall structure.

5. The lining structure of a chemical waste gas and waste liquid incinerator according to claim 1, characterized in that: An axial middle partition wall and a radial chessboard wall are arranged in the rear section of the inner lining of the waste gas incinerator, and the chessboard wall is provided with a plurality of axial through holes.

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