CN111174031A - Method for preparing acid converter lining heat-insulating material by using sulfur - Google Patents
Method for preparing acid converter lining heat-insulating material by using sulfur Download PDFInfo
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- CN111174031A CN111174031A CN202010072591.9A CN202010072591A CN111174031A CN 111174031 A CN111174031 A CN 111174031A CN 202010072591 A CN202010072591 A CN 202010072591A CN 111174031 A CN111174031 A CN 111174031A
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- 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
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/028—Composition or method of fixing a thermally insulating material
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- 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
- F16L59/00—Thermal insulation in general
- F16L59/12—Arrangements for supporting insulation from the wall or body insulated, e.g. by means of spacers between pipe and heat-insulating material; Arrangements specially adapted for supporting insulated bodies
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- 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
- F16L59/00—Thermal insulation in general
- F16L59/12—Arrangements for supporting insulation from the wall or body insulated, e.g. by means of spacers between pipe and heat-insulating material; Arrangements specially adapted for supporting insulated bodies
- F16L59/123—Anchoring devices; Fixing arrangements for preventing the relative longitudinal displacement of an inner pipe with respect to an outer pipe, e.g. stress cones
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention discloses a method for preparing a lining heat-insulating material of a sulfur-prepared acid converter, which comprises the steps of preparing a heat-insulating framework, bundling and fixing, primary reinforcing, welding, bonding and reinforcing and secondary reinforcing to obtain the sulfur-prepared acid converter with the lining heat-insulating material. This application inside lining insulation material technical scheme can effectively restrain the loss of converter internal temperature from the root, can effectively improve sulphur system acid converter internal temperature and last invariable 48 hours under the shutdown state, prolong to about 40 hours than current converter heat preservation effect and duration, combine the equipment external heat preservation duplicate protection, for sulphur system acid converter equipment dimension maintenance, the management such as pipeline trouble provides powerful guarantee in time, and can reduce equipment trouble, repair rate such as pipeline trouble, reduce the maintenance of converter, overhaul, management work such as pipeline trouble, reduce the unnecessary consumption of manpower and materials, the rate of opening of greatly improved installation, economic benefits is improved.
Description
Technical Field
The invention belongs to the technical field of converter construction, and particularly relates to a method for preparing an acid converter lining heat-insulating material by using sulfur.
Background
Compared with the method for preparing acid by pyrite, the method for preparing acid by sulfur has the characteristics of less working procedures, short flow, back process, high sulfur utilization rate, more byproduct steam, low power consumption and less three wastes, so the method for preparing acid by sulfur is a competitive method for preparing acid and is developed rapidly in China. However, a series of problems are also successively exposed after years of practical operation of domestic sulfuric acid preparation. The core equipment for preparing the acid by the sulfur is a converter, the temperature of the converter is controlled on the premise that the whole device is normally started, and after the sulfur acid preparation converter runs for a long time, the smoke temperature adjusting valve at the outlet of the remaining boiler is often burnt out, carbonized and the like, so that the safe and stable running of the device is influenced. With the aging of the converter year by year, the treatment work related to the phenomena of equipment failure, pipeline' leakage, leakage and the like is more frequent.
The converter is closed non-standard equipment, usually adopts "3 + 1" conversion technology according to sulphuric acid production requirement mostly, and the converter divide into 4 sections, separates with the baffle between the section, and each section has a grid plate, and the grid plate is filled with the catalyst, and the sulfur dioxide flue gas that comes out through exhaust-heat boiler gets into converter one section, utilizes the activity of catalyst to catalyze sulfur dioxide oxidation to sulfur trioxide through the catalyst layer, then gets into converter two sections and continues the conversion through the high temperature over heater cooling back. The second-stage outlet flue gas is cooled to a proper temperature through a heat exchanger, then enters a converter for third-stage continuous conversion, and then enters a first absorption tower to absorb sulfur trioxide after heat exchange and cooling. The flue gas absorbed by the first absorption tower is heated to a proper temperature by utilizing the second and third sections of reaction heat and enters the fourth section of the converter to complete the conversion of the residual sulfur dioxide gas in the flue gas, the flue gas from the fourth section enters the second absorption tower to absorb sulfur trioxide after being subjected to heat exchange and cooling, and the flue gas from the second absorption tower enters a chimney to be directly discharged into the atmosphere.
The control of the temperature of the sulfur acid-making converter is a precondition for normal startup of the whole device, and is particularly important for controlling indexes such as the conversion rate of sulfuric acid, tail gas and the like. With the aging of the device year by year, the treatment work related to the phenomena of equipment failure, pipeline 'running, falling, dripping and leaking' and the like is more frequent, and the work is carried out in the following time. At present, in the prior art, the heat preservation treatment is carried out on the sulfur acid making converter in an external heat preservation mode, so that the temperature of the sulfur acid making converter is ensured to be constant, but the heat preservation source is not effectively guaranteed, the constant of the conversion temperature is ensured under the condition that the sulfur acid making converter is normally started and is opposite to the machine, and the heat preservation duration time can only be maintained at about 8 hours when the equipment is shut down and the pipeline fails and leaks in case of emergency. Therefore, the heat preservation effect of the internal temperature of the converter is not strongly supported by the heat preservation form outside the equipment, so that the heat preservation duration of the converter cannot be effectively controlled for a long time.
Disclosure of Invention
The invention provides a method for preparing an inner lining heat-insulating material of an acid converter by using sulfur. The technical scheme of the lining heat-insulating material can effectively inhibit the loss of the temperature in the converter fundamentally, can effectively improve the internal temperature of the sulfur acid-making converter to be continuously constant for 48 hours in a shutdown state, and prolong the heat-insulating effect and the heat-insulating duration to about 40 hours compared with the original technical scheme, and combines the external heat-insulating dual protection of equipment, thereby providing powerful guarantee for the maintenance and the repair of the sulfur acid-making converter equipment, the leakage, the overflow, the dripping, the leakage and the like of pipelines, reducing the repair rate of equipment fault, the pipeline fault and the like, reducing the maintenance, the repair, the pipeline fault and the like of the converter, reducing the unnecessary consumption of manpower and material resources, greatly improving the startup rate of the device, and improving the economic benefit.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a method for preparing the heat-insulating material of the lining of the sulfur acid converter comprises the steps of preparing a heat-insulating framework, bundling and fixing, primary reinforcing, welding, bonding and reinforcing and secondary reinforcing to obtain the sulfur acid converter with the heat-insulating material.
Further, the method for preparing the thermal insulation material for the lining of the acid converter from sulfur specifically comprises the following steps:
(1) making a heat preservation framework: welding heat-insulating nails A on the inner wall and the outer wall of the sulfur acid-making converter respectively, and then using angle iron and flat iron as heat-insulating frameworks;
(2) binding and fixing treatment: hanging an aluminum silicate fiber felt and a glass fiber felt on the heat preservation nail A welded in the step (1), and then respectively binding and fixing the aluminum silicate fiber felt and the glass fiber felt on the heat preservation felt of the converter by using iron wires;
(3) primary reinforcement treatment: fixing the corrugated aluminum plate on the heat-insulating framework in the step (1) by using rivets and self-drilling screws;
(4) welding treatment: welding a heat-insulating nail B on the inner wall of the converter after the reinforcement treatment by using a stainless steel welding rod;
(5) bonding and reinforcing treatment: hanging two layers of aluminum silicate plates on the heat-insulating nail B, and bonding the aluminum silicate plates and the inner wall of the converter after reinforcement treatment by adopting a high-temperature-resistant adhesive;
(6) secondary reinforcement treatment: and nailing an aluminum silicate plate on the reinforced inner wall of the converter by using a high-temperature-resistant stainless steel anchoring nail, and then coating wear-resistant daub on the aluminum silicate plate to obtain the sulfur-to-acid converter lined with the heat-insulating material.
Further, in the step (1), the distance between the heat-preservation nails A is welded according to the size of 400mm by 400 mm. The heat preservation skeleton makes preparation for follow-up fixed corrugated aluminum plate, then need not make the heat preservation skeleton if inside lining aluminium silicate plate, and heat preservation nail A is the lug weld on equipment.
Further, in the step (1), the size of the angle iron is 30mm by 30mm, and the diameter of the flat iron is 28-32 mm.
Further, in the step (2), the diameter of the aluminum silicate fiber felt is 95-105 mm, and the diameter of the glass fiber felt is 145-155 mm.
Further, in the step (2), the iron wire is a # 12 iron wire; the aluminum silicate fiber felt is directly wrapped on equipment, the glass fiber felt is directly wrapped on the aluminum silicate fiber felt, and each layer of the aluminum silicate fiber felt or the glass fiber felt is bound by 12# iron wires.
Further, in the step (3), the thickness of the corrugated aluminum plate is 0.7-0.9 mm; the size of the rivet is 5mm 16mm, and the size of the self drilling screw is 3.2mm 25 mm. The corrugated aluminum plate is used as a sealing waterproof layer of the heat insulation material to protect the heat insulation material. The outer heat preservation needs to be waterproof by an aluminum plate, and the inner heat preservation does not need to be waterproof by an aluminum plate.
Further, in the step (4), the distance between the heat-preservation nails B is welded according to the size of 400mm by 400 mm. When the inner heat preservation is carried out, the density of the lining aluminum silicate plate is higher, so that the 12# iron wire is not needed to be used for bundling treatment.
Further, in the step (6), the wear-resistant daub is prepared by mixing high-temperature-resistant glue and a castable according to a mass ratio of 1: 1-2.
Further, in step (6), the wear-resistant daub is coated with two layers.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
(1) after the converter is lined with the heat-insulating material, the method can effectively inhibit the loss of the internal temperature of the converter from the source, so that the internal and external heat-insulating dual protection of the converter is realized, and the constant temperature time of the internal temperature of the converter in a shutdown state is ensured to be longer.
(2) After the converter is lined with the heat-insulating material, the heat-insulating effect is better than that of the prior art, the heat-insulating duration time of the internal temperature of the converter in the shutdown state can be effectively maintained at 48 hours, and the heat-insulating duration time of the internal temperature of the converter in the shutdown state is only 8 hours in the prior art, so that the method provides powerful time guarantee for the maintenance and repair of equipment and pipelines.
(3) The invention effectively controls the conversion temperature when the converter is started, and is beneficial to the catalyst (the starting temperature is 350 ℃) in the converter to generate catalytic effect under the high temperature condition, thereby carrying out high-efficiency conversion in a short time, achieving the purpose of improving the conversion rate, effectively controlling the tail gas and preventing the occurrence of environmental accidents.
(4) In the aspect of economic benefit, the method reduces the repair rate of equipment failure, pipeline running, overflow, dripping, leakage and the like, reduces the treatment work of maintenance and overhaul of the converter, pipeline running, overflow, dripping, leakage and the like, reduces unnecessary consumption of manpower and material resources, greatly improves the start-up rate of the device, and enables a maintenance unit to have more sufficient time for treating the phenomena of equipment failure, overhaul, pipeline running, overflow, dripping, leakage and the like.
(5) The method provides technical support for the long-period stable operation of the device on the premise of safety, environmental protection and the like, and creates a certain amount of economic benefit value.
(6) The technical scheme of the lining heat-insulating material can effectively inhibit the loss of the temperature in the converter from the root, can effectively improve the internal temperature of the sulfur acid-making converter to last for 48 hours in a shutdown state, prolongs the heat-insulating effect and the duration to about 40 hours compared with the original technical scheme, and provides powerful guarantee for the heat-insulating dual protection outside the combined equipment, and provides powerful guarantee for the treatment of maintenance and maintenance of the sulfur acid-making converter equipment, pipeline 'running, overflowing, dripping, leaking' and the like.
Detailed Description
The following is a detailed description of the embodiments of the present invention, but the present invention is not limited to these embodiments, and any modifications or substitutions in the basic spirit of the embodiments are included in the scope of the present invention as claimed in the claims.
Example 1
A method for preparing an inner lining heat-insulating material of a sulfur acid converter comprises the steps of preparing a heat-insulating framework, bundling and fixing, primary reinforcing, welding, bonding and reinforcing and secondary reinforcing to obtain the sulfur acid converter of the inner lining heat-insulating material, and specifically comprises the following steps:
(1) making a heat preservation framework: welding heat-insulating nails A on the inner wall and the outer wall of the sulfur acid-making converter respectively, and then using angle iron and flat iron as heat-insulating frameworks;
the distance between the heat-preservation nails A is welded according to the size of 400mm x 400 mm; the size of the angle iron is 30mm by 30mm, and the diameter of the flat iron is 28 mm;
(2) binding and fixing treatment: hanging an aluminum silicate fiber felt and a glass fiber felt on the heat preservation nail A welded in the step (1), and then respectively binding and fixing the aluminum silicate fiber felt and the glass fiber felt on the heat preservation felt of the converter by using iron wires;
the iron wire is a No. 12 iron wire; the diameter of the aluminum silicate fiber felt is 95mm, and the diameter of the glass fiber felt is 145 mm; the aluminum silicate fiber felt is directly wrapped on equipment, the glass fiber felt is directly wrapped on the aluminum silicate fiber felt, and each layer of the aluminum silicate fiber felt or the glass fiber felt is bound by 12# iron wires;
(3) primary reinforcement treatment: fixing the corrugated aluminum plate on the heat-insulating framework in the step (1) by using rivets and self-drilling screws;
the thickness of the corrugated aluminum plate is 0.7 mm; the size of the rivet is 5mm 16mm, and the size of the self drilling screw is 3.2mm 25 mm;
(4) welding treatment: welding a heat-insulating nail B on the inner wall of the converter after the reinforcement treatment by using a stainless steel welding rod;
the distance between the heat-preservation nails B is welded according to the size of 400mm x 400 mm;
(5) bonding and reinforcing treatment: hanging two layers of aluminum silicate plates on the heat-insulating nail B, and bonding the aluminum silicate plates and the inner wall of the converter after reinforcement treatment by adopting a high-temperature-resistant adhesive;
(6) secondary reinforcement treatment: nailing an aluminum silicate plate on the reinforced inner wall of the converter by using a high-temperature-resistant stainless steel anchoring nail, and then coating wear-resistant daub on the aluminum silicate plate to obtain the sulfur acid-making converter lined with the heat-insulating material;
the wear-resistant daub is prepared by mixing high-temperature-resistant glue and a castable according to a mass ratio of 1: 1; and the wear-resistant daub is coated on two layers.
Example 2
A method for preparing an inner lining heat-insulating material of a sulfur acid converter comprises the steps of preparing a heat-insulating framework, bundling and fixing, primary reinforcing, welding, bonding and reinforcing and secondary reinforcing to obtain the sulfur acid converter of the inner lining heat-insulating material, and specifically comprises the following steps:
(1) making a heat preservation framework: welding heat-insulating nails A on the inner wall and the outer wall of the sulfur acid-making converter respectively, and then using angle iron and flat iron as heat-insulating frameworks;
the distance between the heat-preservation nails A is welded according to the size of 400mm x 400 mm; the size of the angle iron is 30mm by 30mm, and the diameter of the flat iron is 32 mm;
(2) binding and fixing treatment: hanging an aluminum silicate fiber felt and a glass fiber felt on the heat preservation nail A welded in the step (1), and then respectively binding and fixing the aluminum silicate fiber felt and the glass fiber felt on the heat preservation felt of the converter by using iron wires;
the iron wire is a No. 12 iron wire; the diameter of the aluminum silicate fiber felt is 105mm, and the diameter of the glass fiber felt is 155 mm; the aluminum silicate fiber felt is directly wrapped on equipment, the glass fiber felt is directly wrapped on the aluminum silicate fiber felt, and each layer of the aluminum silicate fiber felt or the glass fiber felt is bound by 12# iron wires;
(3) primary reinforcement treatment: fixing the corrugated aluminum plate on the heat-insulating framework in the step (1) by using rivets and self-drilling screws;
the thickness of the corrugated aluminum plate is 0.9 mm; the size of the rivet is 5mm 16mm, and the size of the self drilling screw is 3.2mm 25 mm;
(4) welding treatment: welding a heat-insulating nail B on the inner wall of the converter after the reinforcement treatment by using a stainless steel welding rod;
the distance between the heat-preservation nails B is welded according to the size of 400mm x 400 mm;
(5) bonding and reinforcing treatment: hanging two layers of aluminum silicate plates on the heat-insulating nail B, and bonding the aluminum silicate plates and the inner wall of the converter after reinforcement treatment by adopting a high-temperature-resistant adhesive;
(6) secondary reinforcement treatment: nailing an aluminum silicate plate on the reinforced inner wall of the converter by using a high-temperature-resistant stainless steel anchoring nail, and then coating wear-resistant daub on the aluminum silicate plate to obtain the sulfur acid-making converter lined with the heat-insulating material;
the wear-resistant daub is prepared by mixing high-temperature-resistant glue and a castable according to a mass ratio of 1: 2; and the wear-resistant daub is coated on two layers.
Example 3
A method for preparing an inner lining heat-insulating material of a sulfur acid converter comprises the steps of preparing a heat-insulating framework, bundling and fixing, primary reinforcing, welding, bonding and reinforcing and secondary reinforcing to obtain the sulfur acid converter of the inner lining heat-insulating material, and specifically comprises the following steps:
(1) making a heat preservation framework: welding heat-insulating nails A on the inner wall and the outer wall of the sulfur acid-making converter respectively, and then using angle iron and flat iron as heat-insulating frameworks;
the distance between the heat-preservation nails A is welded according to the size of 400mm x 400 mm; the size of the angle iron is 30 mm/30 mm, and the diameter of the flat iron is 29 mm;
(2) binding and fixing treatment: hanging an aluminum silicate fiber felt and a glass fiber felt on the heat preservation nail A welded in the step (1), and then respectively binding and fixing the aluminum silicate fiber felt and the glass fiber felt on the heat preservation felt of the converter by using iron wires;
the iron wire is a No. 12 iron wire; the diameter of the aluminum silicate fiber felt is 98mm, and the diameter of the glass fiber felt is 147 mm; the aluminum silicate fiber felt is directly wrapped on equipment, the glass fiber felt is directly wrapped on the aluminum silicate fiber felt, and each layer of the aluminum silicate fiber felt or the glass fiber felt is bound by 12# iron wires;
(3) primary reinforcement treatment: fixing the corrugated aluminum plate on the heat-insulating framework in the step (1) by using rivets and self-drilling screws;
the thickness of the corrugated aluminum plate is 0.75 mm; the size of the rivet is 5mm 16mm, and the size of the self drilling screw is 3.2mm 25 mm;
(4) welding treatment: welding a heat-insulating nail B on the inner wall of the converter after the reinforcement treatment by using a stainless steel welding rod;
the distance between the heat-preservation nails B is welded according to the size of 400mm x 400 mm;
(5) bonding and reinforcing treatment: hanging two layers of aluminum silicate plates on the heat-insulating nail B, and bonding the aluminum silicate plates and the inner wall of the converter after reinforcement treatment by adopting a high-temperature-resistant adhesive;
(6) secondary reinforcement treatment: nailing an aluminum silicate plate on the reinforced inner wall of the converter by using a high-temperature-resistant stainless steel anchoring nail, and then coating wear-resistant daub on the aluminum silicate plate to obtain the sulfur acid-making converter lined with the heat-insulating material;
the wear-resistant daub is prepared by mixing high-temperature-resistant glue and a castable according to a mass ratio of 1: 1.2; and the wear-resistant daub is coated on two layers.
Example 4
A method for preparing an inner lining heat-insulating material of a sulfur acid converter comprises the steps of preparing a heat-insulating framework, bundling and fixing, primary reinforcing, welding, bonding and reinforcing and secondary reinforcing to obtain the sulfur acid converter of the inner lining heat-insulating material, and specifically comprises the following steps:
(1) making a heat preservation framework: welding heat-insulating nails A on the inner wall and the outer wall of the sulfur acid-making converter respectively, and then using angle iron and flat iron as heat-insulating frameworks;
the distance between the heat-preservation nails A is welded according to the size of 400mm x 400 mm; the size of the angle iron is 30 mm/30 mm, and the diameter of the flat iron is 31 mm;
(2) binding and fixing treatment: hanging an aluminum silicate fiber felt and a glass fiber felt on the heat preservation nail A welded in the step (1), and then respectively binding and fixing the aluminum silicate fiber felt and the glass fiber felt on the heat preservation felt of the converter by using iron wires;
the iron wire is a No. 12 iron wire; the diameter of the aluminum silicate fiber felt is 103mm, and the diameter of the glass fiber felt is 153 mm; the aluminum silicate fiber felt is directly wrapped on equipment, the glass fiber felt is directly wrapped on the aluminum silicate fiber felt, and each layer of the aluminum silicate fiber felt or the glass fiber felt is bound by 12# iron wires;
(3) primary reinforcement treatment: fixing the corrugated aluminum plate on the heat-insulating framework in the step (1) by using rivets and self-drilling screws;
the thickness of the corrugated aluminum plate is 0.85 mm; the size of the rivet is 5mm 16mm, and the size of the self drilling screw is 3.2mm 25 mm;
(4) welding treatment: welding a heat-insulating nail B on the inner wall of the converter after the reinforcement treatment by using a stainless steel welding rod;
the distance between the heat-preservation nails B is welded according to the size of 400mm x 400 mm;
(5) bonding and reinforcing treatment: hanging two layers of aluminum silicate plates on the heat-insulating nail B, and bonding the aluminum silicate plates and the inner wall of the converter after reinforcement treatment by adopting a high-temperature-resistant adhesive;
(6) secondary reinforcement treatment: nailing an aluminum silicate plate on the reinforced inner wall of the converter by using a high-temperature-resistant stainless steel anchoring nail, and then coating wear-resistant daub on the aluminum silicate plate to obtain the sulfur acid-making converter lined with the heat-insulating material;
the wear-resistant daub is prepared by mixing high-temperature-resistant glue and a castable according to a mass ratio of 1: 1.8; and the wear-resistant daub is coated on two layers.
Example 5
A method for preparing an inner lining heat-insulating material of a sulfur acid converter comprises the steps of preparing a heat-insulating framework, bundling and fixing, primary reinforcing, welding, bonding and reinforcing and secondary reinforcing to obtain the sulfur acid converter of the inner lining heat-insulating material, and specifically comprises the following steps:
(1) making a heat preservation framework: welding heat-insulating nails A on the inner wall and the outer wall of the sulfur acid-making converter respectively, and then using angle iron and flat iron as heat-insulating frameworks;
the distance between the heat-preservation nails A is welded according to the size of 400mm x 400 mm; the size of the angle iron is 30mm by 30mm, and the diameter of the flat iron is 30 mm;
(2) binding and fixing treatment: hanging an aluminum silicate fiber felt and a glass fiber felt on the heat preservation nail A welded in the step (1), and then respectively binding and fixing the aluminum silicate fiber felt and the glass fiber felt on the heat preservation felt of the converter by using iron wires;
the iron wire is a No. 12 iron wire; the diameter of the aluminum silicate fiber felt is 100mm, and the diameter of the glass fiber felt is 150 mm; the aluminum silicate fiber felt is directly wrapped on equipment, the glass fiber felt is directly wrapped on the aluminum silicate fiber felt, and each layer of the aluminum silicate fiber felt or the glass fiber felt is bound by 12# iron wires;
(3) primary reinforcement treatment: fixing the corrugated aluminum plate on the heat-insulating framework in the step (1) by using rivets and self-drilling screws;
the thickness of the corrugated aluminum plate is 0.8 mm; the size of the rivet is 5mm 16mm, and the size of the self drilling screw is 3.2mm 25 mm;
(4) welding treatment: welding a heat-insulating nail B on the inner wall of the converter after the reinforcement treatment by using a stainless steel welding rod;
the distance between the heat-preservation nails B is welded according to the size of 400mm x 400 mm;
(5) bonding and reinforcing treatment: hanging two layers of aluminum silicate plates on the heat-insulating nail B, and bonding the aluminum silicate plates and the inner wall of the converter after reinforcement treatment by adopting a high-temperature-resistant adhesive;
(6) secondary reinforcement treatment: nailing an aluminum silicate plate on the reinforced inner wall of the converter by using a high-temperature-resistant stainless steel anchoring nail, and then coating wear-resistant daub on the aluminum silicate plate to obtain the sulfur acid-making converter lined with the heat-insulating material;
the wear-resistant daub is prepared by mixing high-temperature-resistant glue and a castable according to a mass ratio of 1: 1.5; and the wear-resistant daub is coated on two layers.
Comparative example 1
A method for preparing the thermal insulation material of the lining of the acid converter by sulfur comprises the following steps:
(1) respectively welding heat-insulating nails according to the length and width of the wall part of the converter at the distance of 400 mm-400 mm, and using 30 mm-30 mm angle iron and 30mm flat iron as heat-insulating frameworks;
(2) hanging 100mm of aluminum silicate fiber felt and 200mm of glass fiber felt on the heat-preservation nail in the step (1), and binding and fixing the aluminum silicate fiber felt and the glass fiber felt by using 12# iron wires;
(3) a corrugated aluminum plate with the thickness of 0.8mm is fixed on the framework by using rivets with the thickness of 5mm by 16mm and self-drilling screws with the thickness of 3.2mm by 25mm, and is used as a sealing waterproof layer of a heat-insulating material to protect the corrugated aluminum plate.
To further illustrate that the present invention can achieve the technical effects, the following experiments were performed:
when the method of the embodiment 1-5 and the comparative example 1 of the application is adopted to carry out lining heat-insulating material on the sulfur acid-making converter, in the using process, the sulfur acid-making converter treated by the method of the comparative example 1 has no problem on ensuring the constancy of the conversion temperature under the condition of normal startup and machine pairing, but the heat-insulating source is not effectively guaranteed, so that the heat-insulating effect of the internal temperature of the converter has no powerful technical support, the heat-insulating duration time can not be effectively controlled for a long time, and the heat-insulating duration time can only be maintained at about 8 hours if the equipment is shut down and the pipeline fails and leaks in emergency situations.
However, the sulfur-to-acid converter treated by the method in the embodiments 1 to 5 of the present application does not have the above problems, the equipment failure rate is reduced, the internal temperature of the sulfur-to-acid converter can be effectively increased and kept constant for 48 hours in a shutdown state, and the economic benefit is increased.
To sum up, this application inside lining insulation material technical scheme can effectively restrain the loss of converter internal temperature from the root, can effectively improve sulphur system acid converter internal temperature and last invariable 48 hours under the shutdown state, than original technical scheme heat preservation effect and duration extend to about 40 hours, heat preservation duplicate protection outside combining equipment, for sulphur system acid converter equipment dimension maintenance, the management such as pipeline "run, emit, drip, leak" provides powerful guarantee in time, and can reduce equipment trouble, repair rate such as pipeline trouble, reduce the maintenance of converter, overhaul, pipeline trouble administers work such as, reduce the unnecessary consumption of manpower and materials, improve the rate of operation of device greatly, economic benefits is improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (10)
1. A method for preparing the heat insulating material of the inner liner of the acid converter by sulfur is characterized by comprising the following steps: the method comprises the steps of making a heat-insulating framework, bundling and fixing, primary reinforcing, welding, bonding and reinforcing and secondary reinforcing to obtain the sulfur-producing acid converter lined with the heat-insulating material.
2. The method for preparing the thermal insulation material for the lining of the acid converter from sulfur according to claim 1, which comprises the following steps:
(1) making a heat preservation framework: welding heat-insulating nails A on the inner wall and the outer wall of the sulfur acid-making converter respectively, and then using angle iron and flat iron as heat-insulating frameworks;
(2) binding and fixing treatment: hanging an aluminum silicate fiber felt and a glass fiber felt on the heat preservation nail A welded in the step (1), and then respectively binding and fixing the aluminum silicate fiber felt and the glass fiber felt on the heat preservation felt of the converter by using iron wires;
(3) primary reinforcement treatment: fixing the corrugated aluminum plate on the heat-insulating framework in the step (1) by using rivets and self-drilling screws;
(4) welding treatment: welding a heat-insulating nail B on the inner wall of the converter after the reinforcement treatment by using a stainless steel welding rod;
(5) bonding and reinforcing treatment: hanging two layers of aluminum silicate plates on the heat-insulating nail B, and bonding the aluminum silicate plates and the inner wall of the converter after reinforcement treatment by adopting a high-temperature-resistant adhesive;
(6) secondary reinforcement treatment: and nailing an aluminum silicate plate on the reinforced inner wall of the converter by using a high-temperature-resistant stainless steel anchoring nail, and then coating wear-resistant daub on the aluminum silicate plate to obtain the sulfur-to-acid converter lined with the heat-insulating material.
3. The method of claim 2, wherein the step of forming the thermal insulation lining comprises the steps of: in step (1), the distance between the insulation nails A is welded according to the size of 400mm by 400 mm.
4. The method of claim 2, wherein the step of forming the thermal insulation lining comprises the steps of: in the step (1), the size of the angle iron is 30mm x 30mm, and the diameter of the flat iron is 28-32 mm.
5. The method of claim 2, wherein the step of forming the thermal insulation lining comprises the steps of: in the step (2), the diameter of the aluminum silicate fiber felt is 95-105 mm, and the diameter of the glass fiber felt is 145-155 mm.
6. The method of claim 2, wherein the step of forming the thermal insulation lining comprises the steps of: in the step (2), the iron wire is a No. 12 iron wire; the aluminum silicate fiber felt is directly wrapped on equipment, the glass fiber felt is directly wrapped on the aluminum silicate fiber felt, and each layer of the aluminum silicate fiber felt or the glass fiber felt is bound by 12# iron wires.
7. The method of claim 2, wherein the step of forming the thermal insulation lining comprises the steps of: in the step (3), the thickness of the corrugated aluminum plate is 0.7-0.9 mm; the size of the rivet is 5mm 16mm, and the size of the self drilling screw is 3.2mm 25 mm.
8. The method of claim 2, wherein the step of forming the thermal insulation lining comprises the steps of: in step (4), the distance between the heat-preservation nails B is welded according to the size of 400mm by 400 mm.
9. The method of claim 2, wherein the step of forming the thermal insulation lining comprises the steps of: in the step (6), the wear-resistant daub is prepared by mixing high-temperature-resistant glue and a castable according to a mass ratio of 1: 1-2.
10. The method of claim 2, wherein the step of forming the thermal insulation lining comprises the steps of: and (6) coating two layers of the wear-resistant daub.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010072591.9A CN111174031A (en) | 2020-01-21 | 2020-01-21 | Method for preparing acid converter lining heat-insulating material by using sulfur |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010072591.9A CN111174031A (en) | 2020-01-21 | 2020-01-21 | Method for preparing acid converter lining heat-insulating material by using sulfur |
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| CN111174031A true CN111174031A (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010072591.9A Pending CN111174031A (en) | 2020-01-21 | 2020-01-21 | Method for preparing acid converter lining heat-insulating material by using sulfur |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1040574A (en) * | 1989-04-06 | 1990-03-21 | 中国石油化工隔热耐磨衬里工程公司 | Refractory materials as lining |
| CN206738839U (en) * | 2017-05-31 | 2017-12-12 | 中国电建集团河南工程公司 | HTHP special-shaped t-bend is incubated outer protection unit |
| CN108212529A (en) * | 2018-03-23 | 2018-06-29 | 艾尼科环保技术(安徽)有限公司 | A kind of external insulation device of deduster |
| CN209370707U (en) * | 2018-11-13 | 2019-09-10 | 浙江省天正设计工程有限公司 | The compound internal insulation structure of high temperature heavy caliber hot air duct |
-
2020
- 2020-01-21 CN CN202010072591.9A patent/CN111174031A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1040574A (en) * | 1989-04-06 | 1990-03-21 | 中国石油化工隔热耐磨衬里工程公司 | Refractory materials as lining |
| CN206738839U (en) * | 2017-05-31 | 2017-12-12 | 中国电建集团河南工程公司 | HTHP special-shaped t-bend is incubated outer protection unit |
| CN108212529A (en) * | 2018-03-23 | 2018-06-29 | 艾尼科环保技术(安徽)有限公司 | A kind of external insulation device of deduster |
| CN209370707U (en) * | 2018-11-13 | 2019-09-10 | 浙江省天正设计工程有限公司 | The compound internal insulation structure of high temperature heavy caliber hot air duct |
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Application publication date: 20200519 |