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Environment-friendly and energy-saving lime sintering process

A technology of lime sintering, environmental protection and energy saving, applied in the field of lime production technology, can solve the problems of large flue gas pollution, high energy consumption, unfavorable ecological environment protection, etc., and achieve good environmental protection and reduce energy consumption.

Inactive Publication Date: 2021-08-17
浙江振鑫新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Lime is a product with high calcium carbonate content such as limestone, dolomite, chalk, shells, etc. It is calcined at 900-1100°C and has a wide range of applications in civil engineering. However, the traditional lime sintering process consumes a lot of energy and emits smoke. Air pollution is large, which is not conducive to the protection of the ecological environment;

Method used

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  • Environment-friendly and energy-saving lime sintering process
  • Environment-friendly and energy-saving lime sintering process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] This embodiment is an adsorption filter element, and the preparation method of the adsorption filter element comprises the following steps:

[0038] A1: Wash the phenolic fiber twice with distilled water and absolute ethanol, then air-dry it, then dissolve zinc chloride in deionized water, then add the washed phenolic fiber, soak it for 1 hour, and place it in a vacuum drying oven. Dry at 65°C to constant weight to obtain pretreated fibers; control the dosage ratio of phenolic fiber, zinc chloride, and deionized water to 1g: 20mL: 8g;

[0039]A2: Put the pretreated fiber into the tube furnace, feed nitrogen and control the flow rate to 50mL / min, raise the temperature to 900°C under the condition of feeding nitrogen protection, control the heating rate to 2°C / min, then keep the temperature for 2h, and cool Take out after reaching room temperature, obtain active carbon fiber;

[0040] A3: Wash the activated carbon fiber with hydrochloric acid solution, and then wash it w...

Embodiment 2

[0043] This embodiment is an adsorption filter element, and the preparation method of the adsorption filter element comprises the following steps:

[0044] A1: Wash the phenolic fiber with distilled water and absolute ethanol three times respectively, then air-dry it, then dissolve zinc chloride in deionized water, then add the washed phenolic fiber, soak it for 2 hours, and place it in a vacuum drying oven. Dry at 75°C to constant weight to obtain pretreated fibers; control the dosage ratio of phenolic fiber, zinc chloride, and deionized water to 1g: 50mL: 8g;

[0045] A2: Put the pretreated fiber into the tube furnace, feed nitrogen and control the flow rate to 50mL / min, raise the temperature to 900°C under the condition of feeding nitrogen protection, control the heating rate to 5°C / min, then keep the temperature for 3h, and cool Take out after reaching room temperature, obtain active carbon fiber;

[0046] A3: Wash the activated carbon fiber with hydrochloric acid solutio...

Embodiment 3

[0049] Present embodiment is a kind of reaction catalyst, and the preparation method of reaction catalyst comprises the following steps:

[0050] B1: Add cerium nitrate and titanium sulfate to deionized water respectively to prepare cerium nitrate solution and titanium sulfate solution, and then mix the cerium nitrate solution and titanium sulfate solution evenly to obtain mixed solution A; control the cerium nitrate solution and titanium sulfate solution The concentration of the substance is 0.2mol / L, the volume ratio of cerium nitrate solution and titanium sulfate solution is 1:3;

[0051] B2: Add ammonia water dropwise to the ammonium chloride solution until the pH value of the solution is 10 to obtain a mixed solution B; control the concentration of the ammonia water to 6 mol / L, and the ammonium chloride solution to a concentration of 1 mol / L ;

[0052] B3: Dissolve polyethylene glycol 600 in deionized water and add it to mixed solution B, mix well to obtain mixed solutio...

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Abstract

The invention discloses an environment-friendly and energy-saving lime sintering process, and relates to the field of lime production processes, in the lime sintering process, lime is formed after limestone is roasted, and waste heat of flue gas is fully utilized to carry out waste heat treatment on the limestone in the production process of the lime sintering process, so that energy consumption is effectively reduced, and the purpose of saving energy is achieved. The flue gas is treated by a purification device after being used and before being discharged into the atmosphere, the flue gas is firstly fully reduced into harmless substances under the action of reducing gas and a reaction catalyst when passing through the purification device, then the harmless substances are adsorbed by an adsorption filter element, more than 90% of harmful gas can be removed, and the purified flue gas finally enters a spray tower to be treated. And through spraying of the spraying water, harmful gas is further removed, so that the exhausted flue gas is effectively purified, and a good environment-friendly effect is achieved.

Description

technical field [0001] The invention relates to the field of lime production technology, in particular to an environment-friendly and energy-saving lime sintering technology. Background technique [0002] Lime is a product with high calcium carbonate content such as limestone, dolomite, chalk, shells, etc. It is calcined at 900-1100°C and has a wide range of applications in civil engineering. However, the traditional lime sintering process consumes a lot of energy and emits smoke. Air pollution is large, which is not conducive to the protection of the ecological environment; [0003] Therefore, there is an urgent need for an environmentally friendly and energy-saving lime sintering process to solve the above problems. Contents of the invention [0004] In order to overcome the above-mentioned technical problems, the object of the present invention is to provide an environment-friendly and energy-saving lime sintering process. [0005] The purpose of the present invention...

Claims

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Application Information

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IPC IPC(8): C04B2/10F27D17/00B01D53/86B01D53/62B01D53/02B01D53/18
CPCC04B2/10F27D17/004B01D53/864B01D53/02B01D53/18B01D53/1437B01D2255/2065B01D2255/20707B01D2253/102B01D2258/0283Y02P10/25
Inventor 包诚凯王鹏飞钱佩锋包星星
Owner 浙江振鑫新材料科技有限公司
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