阅读说明：本技术 过氧化法制取pomtbe中含钼残液的回收再利用方法 (Recycling method of molybdenum-containing residual liquid in POMTBE (polyoxymethylene) preparation by peroxidation method ) 是由 唐斌 樊振寿 宋太仓 孔磊 于 2018-07-05 设计创作，主要内容包括：过氧化法制取POMTBE中含钼残液的回收再利用方法,其特征在于：采用如下步骤：步骤一：含钼残液进入原料储罐前先进行离心分离机粗分,将固体物料先进行分离；分离后的残液输送到分子蒸馏器,固体物料进入混合釜；步骤二：分子蒸馏器在高真空状态下,进行轻重组份物料分离,轻组分物料从顶部采出进入纳米粒子分离器,重组分物料从底部采出,进入混合釜；步骤三：纳米粒子分离器进行固液精细分离,分离出的液体进入蒸馏反应器,固体进入混合釜；步骤四：混合釜将混合料送至高温氧化反应器回收三氧化钼粗品,再经过还原反应得到钼产品。(The method for recycling the molybdenum-containing residual liquid in the POMTBE preparation by the peroxidation method is characterized by comprising the following steps: the method comprises the following steps: the method comprises the following steps: before the molybdenum-containing residual liquid enters a raw material storage tank, a centrifugal separator is used for rough separation, and solid materials are separated; conveying the separated residual liquid to a molecular distiller, and feeding the solid material into a mixing kettle; step two: separating light and heavy component materials by a molecular distiller in a high vacuum state, extracting the light component materials from the top, feeding the light component materials into a nanoparticle separator, extracting the heavy component materials from the bottom, and feeding the heavy component materials into a mixing kettle; step three: carrying out solid-liquid fine separation by a nanoparticle separator, feeding the separated liquid into a distillation reactor, and feeding the solid into a mixing kettle; step four: and (4) conveying the mixture to a high-temperature oxidation reactor to recover a molybdenum trioxide crude product, and performing a reduction reaction to obtain a molybdenum product.)

1. The method for recycling the molybdenum-containing residual liquid in the POMTBE preparation by the peroxidation method is characterized by comprising the following steps:

the method comprises the following steps:

the method comprises the following steps: before the molybdenum-containing residual liquid enters a raw material storage tank, a centrifugal separator is used for rough separation, and solid materials are separated; conveying the separated residual liquid to a molecular distiller, and feeding the solid material into a mixing kettle;

step two: separating light and heavy component materials by a molecular distiller in a high vacuum state, extracting the light component materials from the top, feeding the light component materials into a nanoparticle separator, extracting the heavy component materials from the bottom, and feeding the heavy component materials into a mixing kettle;

step three: carrying out solid-liquid fine separation by a nanoparticle separator, feeding the separated liquid into a distillation reactor, and feeding the solid into a mixing kettle; in a distillation reactor, feeding the material with low ignition point into an oil gas incinerator through a gas phase for incineration treatment, extracting the rest material into a blending kettle, and blending through corresponding solvent mother liquor;

step four: and (4) conveying the mixture to a high-temperature oxidation reactor to recover a molybdenum trioxide crude product, and performing a reduction reaction to obtain a molybdenum product.

Technical Field

The invention belongs to the field of resource recovery, and particularly relates to a method for recycling molybdenum-containing residual liquid in POMTBE (polyoxymethylene) prepared by a peroxidation method.

Background

The residual liquid containing molybdenum is used as hazardous waste to be incinerated, many high value-added components in the residual liquid are not effectively utilized and are burnt, and simultaneously, because the components contain molybdenum catalysts, the components cause the blockage of equipment and pipelines in the incineration process, and the waste of resources and the pollution to the environment are caused.

Disclosure of Invention

In order to solve the problems, the invention provides a method for recycling the molybdenum-containing residual liquid in the POMTBE prepared by a peroxidation method.

The method for recycling the molybdenum-containing residual liquid in the POMTBE preparation by the peroxidation method is characterized by comprising the following steps:

the method comprises the following steps:

the method comprises the following steps: before the molybdenum-containing residual liquid enters a raw material storage tank, a centrifugal separator is used for rough separation, and solid materials are separated; conveying the separated residual liquid to a molecular distiller, and feeding the solid material into a mixing kettle;

step two: separating light and heavy component materials by a molecular distiller in a high vacuum state, extracting the light component materials from the top, feeding the light component materials into a nanoparticle separator, extracting the heavy component materials from the bottom, and feeding the heavy component materials into a mixing kettle;

step three: carrying out solid-liquid fine separation by a nanoparticle separator, feeding the separated liquid into a distillation reactor, and feeding the solid into a mixing kettle; in a distillation reactor, feeding the material with low ignition point into an oil gas incinerator through a gas phase for incineration treatment, extracting the rest material into a blending kettle, and blending through corresponding solvent mother liquor;

step four: and (4) conveying the mixture to a high-temperature oxidation reactor to recover a molybdenum trioxide crude product, and performing a reduction reaction to obtain a molybdenum product.

The beneficial effects are as follows:

the method has the advantages that firstly, the treatment of the environment is greatly improved, the environmental emission is reduced, secondly, the economic benefit is increased, the original hazardous waste is changed into comprehensive utilization from incineration disposal, all components in the raw materials are effectively utilized, the solvent oil is extracted from the hazardous waste of the raw materials and is used as industrial solvent oil, and the extracted molybdenum oxide is sold as a noble metal; the original materials can only be incinerated and disposed, which can generate disposal cost, and the income is increased after the materials are disposed by the method.

Drawings

FIG. 1 is a flow chart of the present invention.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

The method for recycling the molybdenum-containing residual liquid in the POMTBE preparation by the peroxidation method is characterized by comprising the following steps:

the method comprises the following steps:

the method comprises the following steps: before the molybdenum-containing residual liquid enters a raw material storage tank, a centrifugal separator is used for rough separation, and solid materials are separated; conveying the separated residual liquid to a molecular distiller, and feeding the solid material into a mixing kettle;

step two: separating light and heavy component materials by a molecular distiller in a high vacuum state, extracting the light component materials from the top, feeding the light component materials into a nanoparticle separator, extracting the heavy component materials from the bottom, and feeding the heavy component materials into a mixing kettle;

step three: carrying out solid-liquid fine separation by a nanoparticle separator, feeding the separated liquid into a distillation reactor, and feeding the solid into a mixing kettle; in a distillation reactor, feeding the material with low ignition point into an oil gas incinerator through a gas phase for incineration treatment, extracting the rest material into a blending kettle, and blending through corresponding solvent mother liquor;

step four: and (4) conveying the mixture to a high-temperature oxidation reactor to recover a molybdenum trioxide crude product, and performing a reduction reaction to obtain a molybdenum product.

The beneficial effects are as follows:

the method has the advantages that firstly, the treatment of the environment is greatly improved, the environmental emission is reduced, secondly, the economic benefit is increased, the original hazardous waste is changed into comprehensive utilization from incineration disposal, all components in the raw materials are effectively utilized, the solvent oil is extracted from the hazardous waste of the raw materials and is used as industrial solvent oil, and the extracted molybdenum oxide is sold as a noble metal; the original materials can only be incinerated and disposed, which can generate disposal cost, and the income is increased after the materials are disposed by the method.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.