阅读说明：本技术 一种油品前端抽提脱色技术 (Oil product front-end extraction and decoloration technology ) 是由 林木茂 丁达明 于 2020-05-18 设计创作，主要内容包括：本发明属于油品处理技术领域,公开了一种油品前端抽提脱色技术。该油品前端抽提脱色技术,所述脱色技术包括如下步骤：步骤一,将废油收集到集油池中除水,置于炼油锅内,升温到90℃后停止加热,静置24h,将表面明水排尽,然后缓慢升温到130℃,使水分蒸发掉,油面冒出黑色油气即可,待油冷却至常温。该油品前端抽提脱色技术,相比与现有的直接添加脱色剂的处理方式来说,对油品进行深度的处理,调节酸碱度,过滤杂质,在脱色前进一步提高油品的纯度,在大大提高脱色剂反应速率的同时能够加强脱色剂的脱色效果,同时脱色剂的浓度和用量也能够进行适应性的下调,不需要进行重复脱色处理,大大的降低了加工成本,脱色的油品纯度高,符合国家标准。(The invention belongs to the technical field of oil product treatment, and discloses a front-end extraction and decoloration technology for oil products. The oil product front-end extraction decoloration technology comprises the following steps: collecting waste oil into an oil collecting tank for dewatering, placing the waste oil into an oil refining pot, heating to 90 ℃, stopping heating, standing for 24 hours, draining surface clear water, slowly heating to 130 ℃, evaporating water, discharging black oil gas from the oil surface, and cooling the oil to normal temperature. This oil front end extraction decoloration technique, compare with the current processing mode of directly adding the decolorant, carry out the processing of degree of depth to the oil, adjust the pH valve, filter impurity, the purity of further improvement oil before the decoloration, can strengthen the decolorant's decolorant decoloration effect when improving decolorant reaction rate greatly, the concentration and the quantity of decolorant simultaneously also can carry out the down regulation of adaptability, need not carry out repeated decoloration and handle, great reduction the processing cost, the oil purity of decoloration is high, accord with national standard.)

1. An oil product front-end extraction decoloration technology is characterized in that: the decoloring technology comprises the following steps:

collecting waste oil into an oil collecting tank for dewatering, placing the waste oil into an oil refining pot, heating to 90 ℃, stopping heating, standing for 24 hours, draining surface clear water, slowly heating to 130 ℃, evaporating water, discharging black oil gas from the oil surface, cooling the oil to normal temperature, pickling the oil with concentrated sulfuric acid, fully mixing, and standing for precipitation;

step two, filtering the oil product precipitated in the step one, and filtering the precipitated acid sludge out of the oil product to obtain relatively pure waste oil;

step three, performing alkali washing on the waste oil obtained in the step two, heating the waste oil, adding soda ash in the stirring process, fully stirring, standing for 1h, detecting the waste oil to be neutral by test paper, standing for 5h, and filtering out alkali residues;

step four, heating the oil product filtered out in the step three, adding a decolorizing agent into the reaction kettle and mixing;

and step five, centrifuging the mixed oil product generated in the step four by using a centrifugal machine, and removing the upper oil product after the centrifugation is finished to obtain the decolored lubricating oil.

2. The oil product front-end extraction and decoloration technology of claim 1, which is characterized in that: the standing time of the first step is 12 hours, and the mixing time is 0.5 hour.

3. The oil product front-end extraction and decoloration technology of claim 1, which is characterized in that: the concentration of concentrated sulfuric acid used in acid washing in the first step is 92% -98%, and the using amount of acid is 4% -7% of the oil amount.

4. The oil product front-end extraction and decoloration technology of claim 1, which is characterized in that: the soda ash in the third step is Na₂CO₃The temperature of the used oil was 80 ℃.

5. The oil product front-end extraction and decoloration technology of claim 1, which is characterized in that: the temperature range of the oil product in the reaction kettle in the third step is 80-100 ℃, and the reaction time of the decolorizing agent and the oil product is 40-60 min.

6. The oil product front-end extraction and decoloration technology of claim 1, which is characterized in that: in the step five, the rotating speed of the centrifuge is 5000-.

7. The oil product front-end extraction and decoloration technology of claim 1, which is characterized in that: the decoloring agent consists of 100 parts of attapulgite, 10 parts of a silane coupling agent, 5 parts of vinyl imidazole, 4 parts of 3, 4-ethylenedioxythiophene, 10 parts of polyacrylamide and 0.05 part of an initiator, and is prepared by mixing the 3, 4-ethylenedioxythiophene, the vinyl imidazole and the polyacrylamide, stirring and heating to 100 ℃, adding the initiator, continuously stirring for 20 hours, cooling to 50 ℃, sequentially adding the attapulgite and the silane coupling agent, and stirring at the rotating speed of 3000rpm for 30 minutes.

8. The oil product front-end extraction and decoloration technology of claim 1, which is characterized in that: the initiator is at least one selected from the group consisting of a dialkyl peroxide, a peroxycarbonate, a ketone peroxide, and a hydroperoxide.

Technical Field

The invention relates to the technical field of oil product treatment, in particular to an oil product front-end extraction and decoloration technology.

Background

At present, in some crude oil products, such as base oil obtained by vacuum distillation of waste oil or diesel oil refined by an earth method, the chroma of the oil products is high due to low purity, and the oil products contain impurities such as colloid, asphaltene, sulfide, nitride, oxide and the like, so the oil products need to be purified by decoloring treatment, otherwise, the quality of the oil products is affected.

Disclosure of Invention

Based on the technical problems in the background technology, the invention provides an oil product front-end extraction and decoloration technology, and solves the problems in the background technology.

The invention provides the following technical scheme: an oil product front-end extraction decoloration technology, which comprises the following steps:

collecting waste oil into an oil collecting tank for dewatering, placing the waste oil into an oil refining pot, heating to 90 ℃, stopping heating, standing for 24 hours, draining surface clear water, slowly heating to 130 ℃, evaporating water, discharging black oil gas from the oil surface, cooling the oil to normal temperature, pickling the oil with concentrated sulfuric acid, fully mixing, and standing for precipitation.

And step two, filtering the oil product precipitated in the step one, and filtering the precipitated acid sludge out of the oil product to obtain relatively pure waste oil.

And step three, performing alkali washing on the waste oil obtained in the step two, heating the waste oil, adding soda ash in the stirring process, fully stirring, standing for 1h, detecting the waste oil to be neutral by test paper, standing for 5h, and filtering out alkali residues.

And step four, heating the oil product filtered out in the step three, adding a decolorizing agent into the reaction kettle, and mixing.

And step five, centrifuging the mixed oil product generated in the step four by using a centrifugal machine, and removing the upper oil product after the centrifugation is finished to obtain the decolored lubricating oil.

Preferably, the standing time of the first step is 12 hours, and the mixing time is 0.5 hour.

Preferably, the concentration of concentrated sulfuric acid used in acid washing in the step one is 92% -98%, and the amount of acid used is 4% -7% of the amount of oil.

Preferably, the sodium carbonate in the third step is Na₂CO₃The temperature of the used oil was 80 ℃.

Preferably, the temperature range of the oil in the reaction kettle in the third step is 80-100 ℃, and the reaction time of the decolorizing agent and the oil is 40-60 min. .

Preferably, the rotating speed of the centrifuge in the step five is 5000-.

Preferably, the decolorizing agent consists of 100 parts of attapulgite, 10 parts of a silane coupling agent, 5 parts of vinyl imidazole, 4 parts of 3, 4-ethylenedioxythiophene, 10 parts of polyacrylamide and 0.05 part of an initiator, and is prepared by mixing 3, 4-ethylenedioxythiophene, vinyl imidazole and polyacrylamide, stirring and heating to 100 ℃, adding the initiator, continuously stirring for 20 hours, cooling to 50 ℃, sequentially adding the attapulgite and the silane coupling agent, and stirring at the rotating speed of 3000rpm for 30 minutes.

Preferably, the initiator is at least one selected from the group consisting of a dialkyl peroxide, a carbonic peroxide, a ketone peroxide, and a hydroperoxide.

By adopting the technical scheme, the invention has the beneficial effects that:

1. this oil front end extraction decoloration technique, compare with the current processing mode of directly adding the decolorant, carry out the processing of degree of depth to the oil, adjust the pH valve, filter impurity, the purity of further improvement oil before the decoloration, can strengthen the decolorant's decolorant decoloration effect when improving decolorant reaction rate greatly, the concentration and the quantity of decolorant simultaneously also can carry out the down regulation of adaptability, need not carry out repeated decoloration and handle, great reduction the processing cost, the oil purity of decoloration is high, accord with national standard.

2. According to the oil product front-end extraction and decoloration technology, the adopted decolorant can effectively separate colloid, sulfide and the like in the oil product, and the decoloration efficiency can be greatly improved by matching with the front-end pretreatment of the oil product.

Detailed Description

The technical solution of the present invention will be described in detail below with reference to specific examples.

An oil product front-end extraction decoloration technology, which comprises the following steps:

collecting waste oil into an oil collecting tank for dewatering, placing the waste oil into an oil refining pot, heating to 90 ℃, stopping heating, standing for 24 hours, draining surface clear water, slowly heating to 130 ℃, evaporating water, discharging black oil gas from the oil surface, cooling the oil to normal temperature, pickling the oil with concentrated sulfuric acid, fully mixing, and standing for precipitation.

And step two, filtering the oil product precipitated in the step one, and filtering the precipitated acid sludge out of the oil product to obtain relatively pure waste oil.

And step three, performing alkali washing on the waste oil obtained in the step two, heating the waste oil, adding soda ash in the stirring process, fully stirring, standing for 1h, detecting the waste oil to be neutral by test paper, standing for 5h, and filtering out alkali residues.

And step four, heating the oil product filtered out in the step three, adding a decolorizing agent into the reaction kettle, and mixing.

And step five, centrifuging the mixed oil product generated in the step four by using a centrifugal machine, and removing the upper oil product after the centrifugation is finished to obtain the decolored lubricating oil.

The standing time of the first step is 12 hours, the mixing time is 0.5 hour, the concentration of concentrated sulfuric acid used in acid washing in the first step is 92% -98%, the using amount of acid is 4% -7% of the oil amount, and soda ash in the third step is Na₂CO₃The temperature of the waste oil is 80 ℃, the temperature range of the oil product in the reaction kettle in the step three is 80-100 ℃, the reaction time of the decolorizing agent and the oil product is 40-60min, the rotating speed of the centrifugal machine in the step five is 5000-one 7000r/min, and the centrifugal time is 1-1.2 h.

The decoloring agent consists of 100 parts of attapulgite, 10 parts of silane coupling agent, 5 parts of vinyl imidazole, 4 parts of 3, 4-ethylenedioxythiophene, 10 parts of polyacrylamide and 0.05 part of initiator, and is prepared by mixing the 3, 4-ethylenedioxythiophene, the vinyl imidazole and the polyacrylamide, stirring and heating to 100 ℃, adding the initiator, continuously stirring for 20 hours, cooling to 50 ℃, sequentially adding the attapulgite and the silane coupling agent, and stirring for 30 minutes at the rotating speed of 3000rpm, wherein the initiator is at least one selected from dialkyl peroxide, carbonate peroxide, ketone peroxide and hydroperoxide.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.