Iron powder reducing method for simultaneously producing organic product and ferric oxide black

A technology of iron oxide black and reduction method, applied in organic chemistry methods, organic chemistry, chemical instruments and methods, etc., can solve the problems of low iron sludge grade, low production efficiency, environmental pollution, etc., and achieve good performance and high tinting strength. , the effect of reducing environmental pollution

Inactive Publication Date: 2003-11-26
湖北开元化工科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The process has the characteristics of simplicity, low equipment requirements, and less side reactions. Finally, the iron powder is oxidized by organic raw materials into iron oxide (mainly composed of ferric oxide and

Method used

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  • Iron powder reducing method for simultaneously producing organic product and ferric oxide black
  • Iron powder reducing method for simultaneously producing organic product and ferric oxide black
  • Iron powder reducing method for simultaneously producing organic product and ferric oxide black

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Take 85 grams of iron powder, 8 grams of ferrous nitrate, and 150 milliliters of water, and add them to a 2000 milliliter container (the upper part has a discharge port) at the same time, turn on the paddle stirrer to stir and disperse, heat the reaction for 1 hour, control the pH of the solution to 5, and then Slowly add 770 milliliters of 10% p-benzoquinone solution dropwise. After the p-benzoquinone solution is dropped, add 85 grams of iron powder, 8 grams of ferrous nitrate and 150 milliliters of water at one time, and then continue to drop p-benzoquinone Solution 770 ml. Control the stirring speed to 80 rpm. Filter 900 ml of the discharged suspension, wash the filter cake with heated water until the supernatant is colorless, then sieve (the sieve aperture is less than 45 microns), filter, and put the solid phase iron sludge into the CLS101-E type In an oven, dry at 65°C-75°C and grind to obtain 102 grams of finished ferric oxide. The detection tinting strength is...

Embodiment 2

[0042] Take 1.4 tons of iron powder, 40 kg of ferrous chloride, 40 kg of ferrous sulfate, and 2,500 liters of water, add them to a 5,000 liter stainless steel reaction tank, turn on the paddle stirrer to stir and disperse, heat to a temperature of 80°C, and react for 2 hours. The pH of the solution is 6, and slowly add 1000 liters of nitrobenzene solution dropwise to it. After all the nitrobenzene is added dropwise, add 1.4 tons of iron powder, 40 kg of ferrous chloride, and 40 kg of sulfurous acid at one time. And 2500 liters of water, then continue to drop 1000 liters of nitrobenzene solution. Control the stirring speed to 85 rpm. Filter 3800 liters of the discharged suspension, wash the filter cake with heated water until the supernatant is colorless, then sieve (the sieve aperture is less than 45 microns), filter, and put the solid phase iron sludge into the GSX800 type flash evaporation Dried in a drier with a controlled temperature of 200°C to obtain 1.68 tons of finish...

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Abstract

The production process includes reduction, filtering, washing, sieving, filtering and drying steps. In the reduction inside the reduction reactor with paddle stirrer, iron powder, water and reacted medium are heated with steam for 0.5-1 hr to activate, organic material is dropped continuously, iron powder, water and reacted medium are replenished intermittently to maintain the proper material ratio, and the suspension of organic product and iron mud is discharged continuously from the discharge port. The present invention is one continuous production process with low material consumption and high resource utilization.

Description

technical field [0001] The invention relates to a method for producing iron oxide black, in particular to a method for synchronously producing iron oxide black by using an iron powder reduction method to produce organic products. Background technique [0002] The reduction reaction of producing organic products with iron powder reducing agent is a traditional reduction process. The process has the characteristics of simplicity, low equipment requirements, and few side reactions. Finally, the iron powder is oxidized by organic raw materials into iron oxide (mainly composed of ferric oxide and ferric oxide adduct). The production method is low in production efficiency, and the iron sludge generated is of low grade and is often discarded, which is easy to cause waste of resources and environmental pollution. Contents of the invention [0003] The object of the present invention is to propose a method for producing o...

Claims

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Application Information

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IPC IPC(8): C01G49/02C07B31/00
Inventor 时克勤韩军胡修权
Owner 湖北开元化工科技股份有限公司
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