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Method for production of calcium chlorate and coproduction of ultra-fine calcium carbonate and sodium chloride by using acetylene sludge

A technology of ultra-fine calcium carbonate and calcium chlorate, applied in the direction of calcium carbonate/strontium/barium, chloric acid, chlorate, etc., can solve problems such as land erosion, large land, easy leakage and polluted road surface, and achieve equipment investment The effect of low cost and simple operation steps

Inactive Publication Date: 2012-06-20
RUGAO YONGXING CASING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Carbide slag has a moisture content of 40% to 50% and is in the form of paste. It is easy to leak and pollute the road surface during transportation. Long-term accumulation not only occupies a large amount of land, but also has a serious erosion effect on the land.

Method used

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  • Method for production of calcium chlorate and coproduction of ultra-fine calcium carbonate and sodium chloride by using acetylene sludge
  • Method for production of calcium chlorate and coproduction of ultra-fine calcium carbonate and sodium chloride by using acetylene sludge

Examples

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Embodiment 1

[0029] A method for producing calcium chlorate and co-producing fine calcium carbonate and sodium chloride with carbide slag, comprising the steps of:

[0030] A: Put chlor-alkali calcium carbide slag containing 100kg of calcium hydroxide into the ash tank (1), mix it with water to form an emulsion, and make the content of calcium hydroxide reach 120 grams per liter;

[0031] B: send the calcium carbide slag gained in step A to the chlorination tower (2) with the first pressure pump, at the same time, input chlorine gas in the chlorination tower (2), so that the mass ratio of calcium hydroxide and chlorine gas is 1: 1.16 Chlorination reaction, control the chlorination reaction temperature, keep the reaction solution not boiling, the chlorination reaction generates the reaction product containing calcium chlorate and calcium chloride; show the reaction end point with the chlorination table (3), when the chlorination table (3) When the hands of the meter are fixed, it indicates ...

Embodiment 2

[0040] A method for producing calcium chlorate and co-producing superfine calcium carbonate and sodium chloride with carbide slag, comprising the steps of:

[0041] A: Put chlor-alkali calcium carbide slag containing 100kg of calcium hydroxide into the ash tank (1), mix it with water to form an emulsion, and make the content of calcium hydroxide reach 120 grams per liter;

[0042] B: pump to the chlorination tower (2) with the first pressure, at the same time, input chlorine gas in the chlorination tower (2), make calcium hydroxide and chlorine gas pure substance mass ratio be 1: 0.76 to carry out chlorination reaction, control chlorine Increase the reaction temperature to keep the reaction solution from boiling, and the chlorination reaction generates the reaction product containing calcium chlorate and calcium chloride; show the reaction end point with the chlorination meter (3), when the pointer of the chlorination meter (3) is fixed , indicating that the solution no longer...

Embodiment 3

[0051]A method for producing calcium chlorate and co-producing superfine calcium carbonate and sodium chloride with carbide slag, comprising the steps of:

[0052] A: Put chlor-alkali calcium carbide slag containing 100kg of calcium hydroxide into the ash tank (1), mix it with water to form an emulsion, and make the content of calcium hydroxide reach 120 grams per liter;

[0053] B: pump to the chlorination tower (2) with the first pressure, at the same time, input chlorine gas in the chlorination tower (2), make calcium hydroxide and chlorine gas pure substance mass ratio be 1: 1.00 to carry out chlorination reaction, control chlorine Increase the reaction temperature to keep the reaction solution from boiling, and the chlorination reaction generates the reaction product containing calcium chlorate and calcium chloride; show the reaction end point with the chlorination meter (3), when the pointer of the chlorination meter (3) is fixed , indicating that the solution no longer ...

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Abstract

The invention discloses a method for production of calcium chlorate and coproduction of ultra-fine calcium carbonate and sodium chloride by using acetylene sludge, which comprises the following steps: generating reaction products containing the calcium chlorate and calcium chloride by leading calcium hydroxide in chlor-alkali acetylene sludge to be reacted with chlorine gas; filtering the reaction products, removing impurities, reducing temperature, settling, then precipitating calcium chlorate solids, further filtering, and obtaining the calcium chlorate solids and calcium chloride filtrate;and carrying out treatment on the calcium chloride filtrate by using a surfactant, then being reacted with sodium carbonate in a corrosion-resistant reactor, obtaining calcium carbonate precipitate and sodium chloride mixed solution, filtering and separating the calcium carbonate and the sodium chloride.

Description

technical field [0001] The invention relates to the field of comprehensive utilization of chlor-alkali carbide slag, in particular to a method for producing calcium chlorate and co-producing superfine calcium carbonate and sodium chloride with calcium carbide slag. Background technique [0002] Carbide slag is the waste residue produced when calcium carbide is used to produce acetylene, and its main component is Ca(OH) 2 , also contains a small amount of Fe 2 o 3 , SiO 2 and Al 2 o 3 Other metal oxides, hydroxides and a small amount of organic matter. Carbide slag is an important way to use a large amount of carbide slag as a raw material for cement production. It not only solves the problem of carbide slag discharge polluting the environment, realizes the comprehensive recycling of resources, but also saves limestone resources and reduces carbon dioxide emissions. However, with the development of industrialization in our country, the annual output of carbide slag is i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B11/14C01F11/18C01D3/04B09B3/00
Inventor 王嘉兴
Owner RUGAO YONGXING CASING