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Petrochemical lightweight refractory castable

A castable and refractory technology, applied in the field of metallurgy, can solve the problems of increasing the risk of burns, high temperature of the container shell, and damage to the lining refractory material.

Active Publication Date: 2020-04-14
BAOJIUHE REFRACTORY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lining refractories used in petroleum catalytic crackers are often damaged due to the harsh conditions in the vessel
At the same time, due to the high thermal conductivity of the lining refractory material, the temperature of the outer shell of the container is high, which increases the risk of burns and causes heat conduction, resulting in energy waste

Method used

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  • Petrochemical lightweight refractory castable
  • Petrochemical lightweight refractory castable
  • Petrochemical lightweight refractory castable

Examples

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preparation example Construction

[0033] The second aspect of the present invention provides the preparation method of the lightweight refractory castable provided by the first aspect of the present invention, those skilled in the art can choose a suitable method, through the formula of the lightweight refractory castable provided by the first aspect of the present invention A lightweight refractory castable is prepared. For example, the preparation method is usually physical mixing, which may specifically include: mixing the components according to the formula provided in the first aspect of the present invention, and the mixing time may be 170-200s, 170-180s, 180-190s, or 190-200s.

[0034] The third aspect of the present invention provides the use of the lightweight castable refractory material provided by the first aspect of the present invention as a lining refractory material for a reactor. As mentioned above, during the reaction process of some reactors (such as petroleum catalytic crackers), the equip...

Embodiment 1

[0039] The raw material formula ratio of each sample in the embodiment is as shown in table 1:

[0040] Table 1

[0041] Raw material name sample 1 sample 2 sample 3 Ceramsite (3-5mm) 15 17 25 Focus gem (1-3mm) 17.5 13.5 17.5 Focus gem (0-1mm) 17.5 13.5 17.5 Suzhou Clay 1.8 0.8 2.8 Silica powder (920μ) 8 6 3 Floating beads (floating matter ≥ 90%) 5 11 9 Sintered cement (S-68) 12.5 14 7.5 Sintered cement (A-75) 12.5 14 7.5 Alumina Cement(925) 5 5 5 Kyanite (60 mesh) 5 5 5 M-100 0.1 0.1 0.1 P530 0.1 0.1 0.1

[0042] When preparing lightweight refractory castables for petrochemicals, set the formula on the main console according to the process flow, and weigh the small dispersant material. Start the metering equipment, accurately weigh each material to the intermediate weighing silo, and then enter the conveying system; the conveying system enters the mixer through the...

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Abstract

The invention relates to the field of metallurgy, particularly to a petrochemical lightweight refractory castable, and provides a lightweight refractory castable, which comprises the following components: ceramsite, flint clay, clay, silica micro-powder, floating beads, sintered cement, alumina cement, kyanite and a dispersing agent. According to the lightweight refractory castable provided by theinvention, lightweight ceramsite is selected as a raw material so as to integrally reduce the density of the castable to achieve the lightweight requirement, and the strength is improved by adoptingcompound sintered cement; by further optimizing the mixing ratio, the obtained lightweight refractory castable has high strength, low thermal conductivity and light weight, and can be applied to harshconstruction conditions (such as petrochemical catalytic crackers and the like in the petrochemical industry), so that the service life of the product can be prolonged, the process maintenance and overall maintenance costs are reduced, and the industrial prospect is good.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to a lightweight refractory castable for petrochemicals. Background technique [0002] In the petroleum refining process in the petrochemical industry, petroleum catalytic cracking is carried out in the petroleum catalytic cracker. The equipment is under high temperature and high pressure conditions, and the reaction conditions are extremely harsh, with a temperature of 500°C-800°C and a pressure of 150-200KPa. The lining refractories used in petroleum catalytic crackers are often damaged due to the harsh conditions in the vessel. At the same time, due to the high thermal conductivity of the lining refractory material, the temperature of the outer shell of the container is relatively high, which increases the risk of burns and also causes heat conduction and energy waste. [0003] In the current research, refractory castables with high wear resistance generally require high density, while...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
CPCC04B35/66C04B2235/349C04B2235/3217
Inventor 胡波武传金吴佳彬田峰
Owner BAOJIUHE REFRACTORY
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