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Alloy guide plate treated with precoated sand

A technology of alloy plate and coated sand, which is applied in the direction of fluidized bed combustion equipment, burning fuel in molten state, combustion method, etc., can solve the problems of deflector stain deposition and other problems, and achieve effective bonding length extension and compressive strength The effect of improving and increasing the service life

Active Publication Date: 2017-11-07
上海炳晟机电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the purpose of the present invention is to address the deficiencies of the prior art and provide a flow guide alloy plate treated with coated sand, which solves the problem of stain deposition on the conventional flow guide plate, and at the same time strengthens the flow guide alloy plate The wear resistance, corrosion resistance and high temperature resistance of the plate achieve a better protection effect of the deflector on the membrane wall pipe

Method used

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  • Alloy guide plate treated with precoated sand
  • Alloy guide plate treated with precoated sand

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Such as figure 1 and 2 As shown, the diversion alloy plate of the present invention includes an alloy plate body 1, the upper surface of the alloy plate body 1 is composed of a horizontal plane and an inclined plane, and the end of the inclined plane away from the plane is lower than the plane; one side of the horizontal plane faces the membrane wall, There is at least one inner groove 2 corresponding to the outer diameter of the membrane wall tube, a first diversion groove 3 is provided on the inner circular surface of the inner groove 2 facing the membrane wall, and a first guide groove 3 is provided on the inclined surface. There is a second diversion groove 4, and a coated sand layer is added to the surface of the alloy plate body 1 through a coated sand process.

[0046] The coated sand process of the diversion alloy plate comprises the following steps,

[0047] 1) Design: Coating temperature testing, coating process simulation, and coating thermophysical paramet...

Embodiment 2

[0061] Embodiment 2 is basically the same as Embodiment 1, the difference is that

[0062] The coated sand includes the following raw materials in mass percentage: 92% of raw sand, 2.5% of binder, 1% of curing agent, 1% of coupling agent, 1% of lubricant, 1.5% of fireproof and wear-resistant particles, and 0.5% of surface cleaner % and lignin fiber 0.5%; the original sand is made of 80 parts of quartz sand, 30 parts of chromite sand and 25 parts of high-temperature cement, and the particle size of the original sand is 150 mesh; the binder is phenolic resin nano modified The preparation method is as follows: 2 parts, 4 parts, 6 parts and 8 parts of modified montmorillonite, caprolactam, formaldehyde solution and oxalic acid are sequentially added to the reaction kettle by weight, and after fully stirring, Add 75 parts by weight of phenol, slowly heat up to 85°C, stop heating, add 5 parts of oxalic acid, wait for the reaction system to automatically heat up to boiling, and reflu...

Embodiment 3

[0069] Embodiment 3 is basically the same as Embodiment 1, the difference is that

[0070] The coated sand includes the following raw materials in mass percentage: 91% of raw sand, 3.4% of binder, 0.5% of curing agent, 1% of coupling agent, 1.5% of lubricant, 2% of fireproof and wear-resistant particles, and 0.3% of surface cleaner % and lignin fiber 0.3%; the original sand is made of 75 parts of quartz sand, 25 parts of chromite sand and 20 parts of high-temperature cement, and the particle size of the original sand is 135 mesh; the binder is phenolic resin nano modified The preparation method is as follows: 2 parts, 4 parts, 6 parts and 8 parts of modified montmorillonite, caprolactam, formaldehyde solution and oxalic acid are sequentially added to the reaction kettle by weight, and after fully stirring, Add 75 parts by weight of phenol, slowly heat up to 85°C, stop heating, add 5 parts of oxalic acid, wait for the reaction system to automatically heat up to boiling, and ref...

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Abstract

The invention discloses an alloy guide plate treated with precoated sand. The alloy guide plate treated with the precoated sand comprises an alloy plate body. The upper surface of the alloy plate body is composed of a horizontal plane and a slope, and the end, away from the plane, of the slope is lower than the plane. At least one inner groove corresponding to a membrane wall pipe in external diameter is formed in one side of the horizontal plane and faces the membrane wall. First guide grooves are formed in the inner circular surface, facing the membrane wall, of each inner groove. The slope is provided with second guide grooves. A precoated sand layer is arranged on the surface of the alloy plate body. The optimal treatment is conducted on the surface of the alloy guide plate through a precoated sand technique, so that the alloy guide plate has the characteristics of abrasion resistance, corrosion resistance, high-temperature resistance, adhesion resistance and the like, deposition of stains like coal ash on the surface of the alloy guide plate is reduced advantageously, and the service life is prolonged.

Description

technical field [0001] The invention relates to a CFB boiler, in particular to a diversion alloy plate treated with coated sand. Background technique [0002] CFB boiler combustion technology has the advantages of wide adaptability to coal types, stable combustion, low pollutant emissions and easy control, and comprehensive utilization of ash and slag. It has become a commercialized and large-scale low-grade combustion efficient and clean combustion utilization technology. [0003] Although the CFB boiler has the above advantages compared with other furnace types, it also has some inherent shortcomings. The heating surface in the furnace is worn under the action of gas-solid two-phase flow, especially the water-cooled wall in the transition zone between the dense phase zone and the dilute phase zone. Wear problem seriously affects the reliability of boiler operation. The central airflow in the CFB boiler furnace moves upwards, and the wall-adhered flow flows downward. The s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C10/18C04B28/02C04B111/20C04B111/28
CPCC04B28/02C04B2111/00525C04B2111/20C04B2111/2038C04B2111/28F23C10/18F23C2206/10C04B14/104C04B14/02C04B22/0013C04B24/121C04B24/38C04B24/282C04B24/42C04B24/085C04B14/303C04B14/06C04B14/024C04B14/022C04B14/305C04B24/383C04B24/302C04B20/0076C04B24/124C04B24/04C04B24/10
Inventor 王保东王震威刘涛牛文奇赵安民张健健崔永强
Owner 上海炳晟机电科技有限公司
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