CN101328428B - Processing process of sulfuric acid containing petrol - Google Patents
Processing process of sulfuric acid containing petrol Download PDFInfo
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- CN101328428B CN101328428B CN2008101384573A CN200810138457A CN101328428B CN 101328428 B CN101328428 B CN 101328428B CN 2008101384573 A CN2008101384573 A CN 2008101384573A CN 200810138457 A CN200810138457 A CN 200810138457A CN 101328428 B CN101328428 B CN 101328428B
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Abstract
The invention relates to a process for treating sulfuric acid-containing petroleum. The process comprises the following steps that: sulfuric acid-containing petroleum is heated to between 55 and 58 DEG C, and a dispersing agent with equal volume is added and stirred evenly; then, the mixture is heated to between 75 and 85 DEG C; a demulsifier is added while stirring the mixture; finally, a neutralizer is added and stirred till the mixture is evenly mixed; then, the mixture is allowed to stand till oil and water are separated, and lower water-soluble liquid is discharged so as to obtain petroleum not containing sulfuric acid. The process is simple and has easy operation, excellent separation effect and high petroleum product yield; moreover, the entire process is carried out at an intermediate temperature in a closed state at a normal pressure, and does not generate waste gas and waste and secondary pollution; therefore, the process is an effective method for treating the sulfuric acid-containing petroleum at present.
Description
Technical field
The present invention relates to a kind of treatment process of sulfuric acid containing petrol.
Background technology
Petrochemical plant can produce a large amount of vitriolated waste oil in process of production, and the staple in these waste oil is an oil, but owing to contain a large amount of sulfuric acid, can't directly use.If can sulfuric acid composition wherein be got rid of, remaining oil composition wherein still can be used.Traditional treatment process is to adopt open container that sulfuric acid containing petrol is heated to more than 200 ℃; Utilize high temperature to make part of sulfuric acid volatilization wherein; Reduce the temperature to then about 60 ℃ and to add in the sodium hydroxide and remaining sulfuric acid, last recycle silicon glue absorption obtains comparatively purified oil.But this method sulfuric acid is removed not thoroughly, the Oil Recovery rate is low, reduction effect is poor, operation sequence is loaded down with trivial details, the discharging of more waste gas and wastes causes secondary pollution easily.
Summary of the invention
The objective of the invention is to propose a kind of treatment process of sulfuric acid containing petrol, require sulfuric acid to remove thoroughly, the Oil Recovery rate is high, non-secondary pollution.
For achieving the above object, the treatment process of sulfuric acid containing petrol of the present invention may further comprise the steps:
A), sulfuric acid containing petrol is heated to 55 ℃～58 ℃, add isopyknic dispersion agent and stir, obtain the midbody of steps A;
B), the midbody of steps A is heated to 75 ℃～85 ℃ and keep this temperature, add emulsion splitter while stirring, the consumption of emulsion splitter be steps A midbody weight 3%～5%, stir until mixing, obtain the midbody of step B;
C), in the midbody of step B, add neutralizer, the usage quantity of neutralizer be step B midbody weight 5%～7%, stir until mixing, obtain the midbody of step C;
D), stop heating, the midbody of step C is left standstill in the cooling of giving free rein to, and up to oily water separation, emits the water soluble liq of lower floor, can obtain not vitriolated oil.
Described dispersion agent is the common solution of sodium-chlor, plumbic acetate, water, and wherein the ratio of weight and number of sodium-chlor, plumbic acetate, water is 4-5:0.8-1.2:90-98; Described neutralizer is that concentration is 20% sodium hydroxide solution.
The simple operation easily of this technology, good separating effect, oil product yield height, whole flow process is carried out under middle temperature, sealing, normal pressure, does not have the discharging of waste gas and wastes, and non-secondary pollution is effective ways of handling sulfuric acid containing petrol at present.
Embodiment
A), sulfuric acid containing petrol is heated to 55 ℃～58 ℃, and keep this temperature, add isopyknic dispersion agent and stir, obtain the midbody of steps A; Dispersion agent lytic activity under 55 ℃～58 ℃ temperature is maximum, and is changing under the temperature, is not easy to cause the vitriolic volatilization, avoids the secondary pollution environment.Described dispersion agent is the common solution of sodium-chlor, plumbic acetate, water, and wherein the ratio of weight and number of sodium-chlor, plumbic acetate, water is 4-5:0.8-1.2:90-98; The ratio that present embodiment adopts is 5:1:94; Can certainly do suitably adjustment to this ratio according to the viscosity of vitriolic content and oil.
B), the midbody of steps A is heated to 75 ℃～85 ℃ and keep changing temperature, add emulsion splitter while stirring, the consumption of emulsion splitter be steps A midbody weight 3%～5%, stir until mixing, obtain the midbody of step B;
Emulsion splitter is petroleum chemical industry a kind of chemical commonly used; Because some solids are insoluble in water, one or more are present in the aqueous solution in a large number when these solids, under the stirring of waterpower or extrinsic motive; These solids can be present in the water with the emulsive state, form emulsion.This theoretically system is unsettled; If but exist under the situation of some tensio-active agents; Make emulsified state very serious, even two be difficult to separate mutually, most typical is oil-water mixture and the water oil mixt in WWT in oily water separation; Two form more stable water-in-oil or oil-in-water structure in mutually at this, its theoretical basis is " double electrical layers ".In the case, drop into some medicaments, destroying stable double electrical layers, and the stable emulsion system, thereby reach two purposes that are separated.These that use are referred to as emulsion splitter in order to reach the medicament that destroys emulsifying effect.In this step, the consumption of emulsion splitter is directly proportional with the viscosity of contained ratio of sulfuric acid and oil.The emulsion splitter that present embodiment adopts is the MJ-P series of being produced by Nanjing Ming Jiang chemical industry ltd, and PIN is 151445116.
C), in the midbody of step B, add neutralizer, the usage quantity of neutralizer be step B midbody weight 5%～7%, stir until mixing, obtain the midbody of step C; This neutralizer is the sodium hydroxide that can adopt various states, and present embodiment is that employing concentration is 20% sodium hydroxide solution.
D), stop heating, the midbody of step C is left standstill in the cooling of giving free rein to, and up to oily water separation, emits the water soluble liq of lower floor, can obtain not vitriolated oil.After the oily water separation,, slant acidity is described then, in the next round treating processes, can be suitably increased the consumption of neutralizer if be light black at the water soluble liq of lower floor; Otherwise, muddy dark yellow occurs as if water soluble liq meta-alkalescence then is described in lower floor, can suitably reduce the consumption of neutralizer; If at as clear as crystal then its pH value of the water soluble liq of lower floor is neutral.
Claims (1)
1. the treatment process of sulfuric acid containing petrol is characterized in that may further comprise the steps:
A), sulfuric acid containing petrol is heated to 55 ℃～58 ℃; Add isopyknic dispersion agent and stir; Described dispersion agent is the common solution of sodium-chlor, plumbic acetate, water, and wherein the ratio of weight and number of sodium-chlor, plumbic acetate, water is 4-5:0.8-1.2:90-98; Obtain the midbody of steps A;
B), the midbody of steps A is heated to 75 ℃～85 ℃ and keep this temperature, add emulsion splitter while stirring, the consumption of emulsion splitter be steps A midbody weight 3%～5%, stir until mixing, obtain the midbody of step B;
C), in the midbody of step B, add neutralizer, described neutralizer is that concentration is 20% sodium hydroxide solution; The usage quantity of neutralizer be step B midbody weight 5%～7%, stir until mixing, obtain the midbody of step C;
D), stop heating, the cooling of giving free rein to, and the midbody of step C left standstill up to oily water separation, is emitted the water soluble liq of lower floor, can obtain not vitriolated oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101384573A CN101328428B (en) | 2008-08-01 | 2008-08-01 | Processing process of sulfuric acid containing petrol |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101384573A CN101328428B (en) | 2008-08-01 | 2008-08-01 | Processing process of sulfuric acid containing petrol |
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| Publication Number | Publication Date |
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| CN101328428A CN101328428A (en) | 2008-12-24 |
| CN101328428B true CN101328428B (en) | 2012-03-21 |
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| CN2008101384573A Expired - Fee Related CN101328428B (en) | 2008-08-01 | 2008-08-01 | Processing process of sulfuric acid containing petrol |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101775312B (en) * | 2010-03-25 | 2013-07-24 | 武汉聚隆功能塑料有限公司 | Oil-denitrifying finishing agent |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4990237A (en) * | 1987-07-27 | 1991-02-05 | Heuer Steven R | Process for the recovery of oil from waste oil sludges |
| CN1087666A (en) * | 1992-12-02 | 1994-06-08 | 中国石油化工总公司石油化工科学研究院 | Method for treating acid residuals of petroleum |
| CN1528863A (en) * | 2003-09-26 | 2004-09-15 | 毅 赵 | Process method for producing heavy fuel oil by alkali solution neutralizing acid sludge and demulisifying-sedimenting-separating |
| CN101274131A (en) * | 2007-03-30 | 2008-10-01 | 上海信联能源有限公司 | Comprehensive utilization technique of acid residuals of petroleum |
-
2008
- 2008-08-01 CN CN2008101384573A patent/CN101328428B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4990237A (en) * | 1987-07-27 | 1991-02-05 | Heuer Steven R | Process for the recovery of oil from waste oil sludges |
| CN1087666A (en) * | 1992-12-02 | 1994-06-08 | 中国石油化工总公司石油化工科学研究院 | Method for treating acid residuals of petroleum |
| CN1528863A (en) * | 2003-09-26 | 2004-09-15 | 毅 赵 | Process method for producing heavy fuel oil by alkali solution neutralizing acid sludge and demulisifying-sedimenting-separating |
| CN101274131A (en) * | 2007-03-30 | 2008-10-01 | 上海信联能源有限公司 | Comprehensive utilization technique of acid residuals of petroleum |
Non-Patent Citations (1)
| Title |
|---|
| 戴钧樑.酸性油的处理.《废润滑油再生》.中国石化出版社,1999,第95页以及第239-245页. * |
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