Sealing filler of cavity between coke oven protective plate and oven door frame

A slurry and inorganic composite technology, which is used in the door/closure of coke oven, coke oven, heating of coke oven, etc., can solve the problems of high price, low solid residual rate, easy hardening and cracking, etc., and reduce smoke emission. and fugitive emissions, improve the coke oven environment, and improve the effect of sealing

Inactive Publication Date: 2020-02-07
BAOSHAN IRON & STEEL CO LTD
View PDF3 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of material is a solvent-based material. After high temperature, on the one hand, the solvent volatilizes, and on the other hand, carbonization occurs. Therefore, the residual rate of solids after high temperature is low, and the price is relatively high, and the cost is high.
[0009] The refractory slurry and sealing materials currently used in coke ovens mainly include silicon fireclay, clay fireclay, ceramic fiber powder, diatomaceous earth powder, etc., which are basically constructed by plastering. Clay fireclay is the main grouting material. Poor fluidity, and easy to harden and crack after high temperature sintering

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Sealing filler of cavity between coke oven protective plate and oven door frame
  • Sealing filler of cavity between coke oven protective plate and oven door frame
  • Sealing filler of cavity between coke oven protective plate and oven door frame

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The formula selection of embodiment 1 inorganic-inorganic composite slurry

[0034] (1) Selection of base material

[0035] Because the materials involved in the invention are applied to the cavity environment between the coke oven protection plate and the furnace door frame, the selected base material needs to have good fluidity and dispersion, stable chemical properties, not easy to react, and resistant to high temperature and burning , so the present invention chooses nano-scale silica sol as the matrix material.

[0036] In the selected nano-scale silica sol, SiO 2 The content is 20wt.%~40wt.%, to ensure that after the silica sol is heated and the water evaporates, the colloidal particles form a porous substance and firmly adhere to the surface of the object, forming a silicon-oxygen bond between the particles, which is a good adhesive The melting point is lower than 1000°C, and it has low-temperature self-sintering characteristics; the pH value is adjusted with s...

Embodiment 2

[0051] The preparation method of embodiment 2 inorganic-inorganic composite slurry

[0052] (1) Nano-scale silica sol (Whilt Technology Co., Ltd. silica sol HS-830) is used as the matrix material, in which SiO 2 The content is 30wt.%, pH value is 9.5, weighs 4kg.

[0053] (2) Get 0.026kg of hydroxyethyl cellulose, make it into 10wt.% aqueous solution, add in the silica sol of step (1) together with 0.054kg of silane coupling agent A172, and mix well;

[0054] (3) get 3.6kg particle size and be 3000 purpose alumina powder, 1.7kg particle size be 3000 purpose silica powder and 0.6kg particle size be 10000 purpose fibrous talcum powder, be mixed with filler, add step (2) after mixing uniformly Add the dispersed phase additive to the silica sol, and stir while adding to ensure that the filler is evenly mixed in the silica sol to obtain an inorganic-inorganic composite slurry.

Embodiment 3

[0055] Embodiment 3 The use method of inorganic-inorganic composite slurry

[0056] (1) Use equipment

[0057] The pressure grouting equipment can be used, and the current paint spraying equipment can be borrowed. The specific grouting process is shown as follows.

[0058] The paint spraying operation equipment is putter2000L purchased from Wuxi Putian Special Spraying Equipment Co., Ltd., pressure: 0.1-0.5MPa; flow rate: 20-200 liters / h; storage tank volume: 1-10 liters.

[0059] The nozzle is an L-shaped round pipe with an outer diameter of 7-8mm and an inner diameter of 6-7mm. The nozzle mouth is processed into an oval shape with a short diameter of 5-6mm.

[0060] (2) On-site grouting method for coke oven

[0061] ① Select the carbonization chamber where the cavity between the protective plate and the furnace door frame needs to be grouted, and leave the furnace empty after pushing the coke.

[0062] ② Remove the furnace door and hang the insulation cotton on the furnac...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
particle diameteraaaaaaaaaa
melting pointaaaaaaaaaa
Login to view more

Abstract

The invention provides novel inorganic-inorganic composite paste. The inorganic-inorganic composite paste comprises the raw materials of a base material, a filler and a disperse-phase additive according to the mass ratio of (1-1.6):(1.2-2.3):(0.003-0.03), wherein the base material is nanoscale silica sol, the filler is one or more selected from the group consisting of alumina, silicon dioxide, fire clay and talcum powder, and the disperse-phase additive is one or more selected from the group consisting of silane coupling agents and cellulose substances. By filling a cavity between a coke ovenprotective plate and an oven door frame with the inorganic-inorganic composite paste in an injection mode, the sealing degree between the coke oven protective plate and the oven door frame can be increased, smoking and disordered emission at the oven door frame are lowered, the coke oven environment is improved, and meanwhile the impact force on an oven wall when a coke oven engine dismantles andsuspends an oven door is buffered.

Description

technical field [0001] The invention belongs to the technical field of new materials, and in particular relates to a novel inorganic-inorganic composite slurry, its preparation method and its application. Background technique [0002] During the coking process, the coal is heated in the carbonization chamber in isolation from the air, and undergoes drying and dehydration, thermal cracking, semi-coking and coking. The whole carbonization process is accompanied by the generation of raw gas, especially in the early and middle stages of carbonization. The amount of raw gas is relatively large. In the process of coking and carbonization, if the area of ​​the coke oven body carbonization chamber is not tight, it will cause waste gas to overflow, that is, the so-called coke oven body smoke in the daily production process, which will not only cause product loss, but also seriously affect the coke oven environment. create pollution. [0003] The coke oven is made of refractory mater...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C10B25/16
CPCC04B35/66C04B2235/3217C04B2235/3418C04B2235/349C10B25/16
Inventor 曹银平马寅元倪升起程乐意李勇许永跃
Owner BAOSHAN IRON & STEEL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap