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A kind of method that improves montan wax and redox sodium, sulfuric acid redox reaction rate

A technology of reaction rate and sodium alumite, applied in the recovery/refining, application of mineral wax, small raw hide/large raw hide/leather/fur treatment, etc., can solve the problem of no positive effect, easy volatilization of chromic acid mist, and reduced device efficiency and other problems, to prevent the volatilization of chromic acid mist, increase mutual solubility, and improve the efficiency of the device

Active Publication Date: 2015-08-12
QUJING ZHONGYI FINE CHEMICAL INDUSTRY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the reducing agent-montan wax is a water-insoluble substance, it is incompatible with water-soluble substances such as oxidizing agent-sodium bauxite and sulfuric acid. It takes a long time to make it react completely, which reduces the efficiency of the device.
Simultaneously, above-mentioned reaction does not play a positive role to the quality and performance of basic chromium sulfate-chromium powder modulated into gained oxidizing solution
During the redox reaction process, chromic acid mist is easy to volatilize and pollute the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Put the sodium rufium and water into the reaction kettle in sequence according to the mass ratio of 1:2, and stir to completely dissolve the sodium ruthin; then slowly add concentrated sulfuric acid into the reaction kettle according to the mass ratio of sodium ruthin and concentrated sulfuric acid of 1:1.5, and the reaction temperature is 30°C , the reaction time is 10min; according to sodium alum and carboxylate (R F COO - m + ) to the mass ratio of 1:0.0001 to carboxylate (R F COO - m + ) into the reaction kettle, the reaction temperature is 30°C, and the reaction time is 10min; then add montan wax into the reaction kettle at a mass ratio of 1:0.4 between sodium alum and montan wax, the reaction temperature is 100°C, and the reaction time is 2h; After the completion, pickling and water washing of the oil obtained after the completion of the reaction, dehydration, and molding to obtain the product wax; preparation of the aqueous solution obtained after the complet...

Embodiment 2

[0029] Put sodium rufium and water into the reaction kettle in sequence according to the mass ratio of 1:3, stir to completely dissolve the sodium ruthin; then slowly add concentrated sulfuric acid into the reaction kettle according to the mass ratio of sodium ruthin and concentrated sulfuric acid of 1:2, and the reaction temperature is 40°C , the reaction time is 15min; according to sodium alum and sulfonate (R F SO 3 - m + ) to the mass ratio of 1:0.0003 will sulfonate (R F SO 3 - m + ) into the reactor, the reaction temperature is 35°C, and the reaction time is 15min; then add montan wax into the reactor at a mass ratio of 1:0.5 between sodium alum and montan wax, the reaction temperature is 105°C, and the reaction time is 3h; After the completion, pickling and water washing of the oil obtained after the completion of the reaction, dehydration, and molding to obtain the product wax; preparation of the aqueous solution obtained after the completion of the reaction, sta...

Embodiment 3

[0031] Add sodium rufium and water into the reaction kettle in sequence according to the mass ratio of 1:4, stir to completely dissolve the sodium ruthin; then slowly add concentrated sulfuric acid into the reaction kettle according to the mass ratio of sodium ruthin and concentrated sulfuric acid of 1:1.8, and the reaction temperature is 50°C , the reaction time is 20min; F OSO 3 - m + ) with a mass ratio of 1:0.0004 to sulfate (R F OSO 3 - m + ) into the reactor, the reaction temperature is 50 ℃, the reaction time is 20min; then add montan wax in the reaction kettle according to the mass ratio of sodium rufium and montan wax to 1:0.7, the reaction temperature is 110 ℃, and the reaction time is 4h; after the reaction is complete, the oily mixture obtained after the reaction is complete After the product is pickled, washed with water, dehydrated and formed, the product wax can be obtained; the aqueous solution obtained after the reaction is completed is prepared, static...

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PUM

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Abstract

The invention discloses a method for improving the rate of oxidation-reduction reaction of lignite wax with sodium bichromate and a sulfuric acid. The method comprises the following steps: orderly adding sodium bichromate and water to a reaction kettle according to the mass ratio of 1:(2-4), and agitating so that the sodium bichromate is completely dissolved; slowly adding concentrated sulfuric acid to the reaction kettle according to the mass ratio of the sodium bichromate to the concentrated sulfuric acid being 1:(1.5-2.0), wherein the reaction temperature is 30-50 DEG C and the reaction time is 10-20 minutes; secondly, adding a surfactant to the reaction kettle according to the mass ratio of the sodium bichromate to the surfactant being 1:(0.0001-0.0005), wherein the reaction temperature is 30-50 DEG C and the reaction time is 10-20 minutes; adding lignite wax to the reaction kettle according to the mass ratio of sodium bichromate to lignite wax being 1:(0.4-0.7), wherein the reaction temperature is 100-110 DEG C and the reaction time is 2-4 hours; and after complete reaction, separating and drying to obtain light S wax and chromium powder. The method provided by the invention is simple in process and has significant effect and good industrial popularization value.

Description

technical field [0001] The invention belongs to the technical field of montan wax deep processing industry, and in particular relates to a method capable of increasing the oxidation-reduction reaction rate of montan wax, sodium red alum and sulfuric acid, improving the performance of basic chromium sulfate, and preventing the volatilization of chromic acid mist. Background technique [0002] Basic chromium sulfate, also known as basic chromium sulfate, is a very important inorganic chemical product widely used in the leather industry, where it is an extremely important leather tanning agent. At present, basic chromium sulfate is prepared by the reaction of sugar reducing agent, sodium alum, and sulfuric acid in China. However, this preparation process has high cost, serious pollution, and difficult control of the reaction. [0003] Montan wax is a rare mineral, which is a mixture containing wax, resin and bitumen extracted from waxy coal (mainly lignite or some peat) and sol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G73/00C14C3/04C22B34/32
Inventor 刘长胜
Owner QUJING ZHONGYI FINE CHEMICAL INDUSTRY CO LTD
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