CN101565215A - Coking acid sewage treating agent and using process - Google Patents
Coking acid sewage treating agent and using process Download PDFInfo
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- CN101565215A CN101565215A CNA2009101172979A CN200910117297A CN101565215A CN 101565215 A CN101565215 A CN 101565215A CN A2009101172979 A CNA2009101172979 A CN A2009101172979A CN 200910117297 A CN200910117297 A CN 200910117297A CN 101565215 A CN101565215 A CN 101565215A
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- coking
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Abstract
The invention discloses a coking acid sewage treating agent, comprising an accelerant and an anti-coking agent, the accelerant including mercaptoethanol, ferrous sulphate, calciumoxide, hydrochloric acid, water, the anti-coking agent including dimethyl diallyl ammonium chloride, Lauryl dimethyl amine oxide, sodium lauryl sulfate, sodium silicate, water. The invention further discloses a coking acid sewage treating process, which includes charging the accelerant into the coking acid sewage while stirring uniformly, charging the anti-coking agent into the solution while stirring uniformly, standing for layering, the upper layer being light oil and coking powder, the lower layer being treated water. The provided coking acid sewage treating agent has evident effect on eliminating coking powder suspended substance/petrol class in the acid sewage, lowers content of coking powder and petrol class in the acid sewage, prolongs life of the stripper disc, reduces times of cleaning of the stripper disc, lowers operation cost. The provided coking acid sewage treating agent is stable and reliable in the use process, easy to manage, and has ability of impact resistance.
Description
Technical field
The present invention relates to a kind of Industrial Wastewater Treatment agent and production technique, particularly a kind of coking acid sewage treating agent and use technology.
Background technology
Coking sour water is the sour water that distillation system coker fractionation return tank of top of the tower produces, because high sulfide that contains in the coking sour water and coke powder and solid impurity, oil in water emulsion can't be deviate under the quiescent settling processing condition.
The treatment process of coking acid sewage has two kinds at present:
Handle the general expensive sour water processing field that enters, but high sulfur-bearing brings very big difficulty for operation and the safety operation of handling the field.
Part enterprise increases and builds sour water purification-stripper plant, and with the ammonia nitrogen and the hydrogen sulfide stripping of acid waste water, the acidity behind the stripping is purified waste water and is used for other device cooling waters.And the sour water of coker is owing to carry a large amount of coke powders and oil in water emulsion, enter follow-up acidic water stripping device, the coke powder deposition is serious, interchanger, the first-class appearance of tower tray coking and blocking phenomenon in various degree, it is malfunctioning to cause part instrument such as liquid level to stop up, force acidic water stripping device to be stopped work and handle, the balance of system's coking sour water and the steady production of acidic water stripping device have been caused very big influence.
Summary of the invention
Purpose of the present invention is exactly to eliminate the deficiency and the shortcoming of technique scheme, provide a kind of coking acid sewage treating agent and a kind of simply, coking acid sewage treatment process efficiently.
In order to achieve the above object, the invention provides a kind of coking acid sewage treating agent, this coking acid sewage treating agent comprises promotor, buffer coke charge agent, and each form formula is as follows:
Described promotor comprises mercaptoethanol (1.5%～3%), ferrous sulfate (15%～25%), calcium oxide (1%～5%), hydrochloric acid (0.5%～1%), water (66%～82%) by weight percentage.
Described buffer coke charge agent comprises dimethyl diallyl ammonium chloride (15%～25%), oxidation dodecyl dimethyl amine (3.8%～5.5%), sodium lauryl sulphate (K-12) (5.8%～10%), water glass (0.3%～1%), water (58.5%～75.1%) by weight percentage.
Each formulation preparation technology is as follows:
Promotor: hydrochloric acid is squeezed in the reactor, in hydrochloric acid, dropped into quantitative calcium oxide while stirring, stirred 10 minutes; In above-mentioned solution, slowly add quantitative water and ferrous sulfate after 10 minutes while stirring; With above-mentioned solution be heated to 40 ℃～50 ℃ continue stirring until few 1 hour after, add mercaptoethanol and continue stirring until and fewly be cooled to room temperature after 1.5 hours, the finished product range estimation is white liquid, pH value 3.5～4.0.
Buffer coke charge agent: water squeezed in water, add quantitative dimethyl diallyl ammonium chloride behind the reactor while stirring and continued stirring until few 30 minutes; Adding quantitative water glass heating in above-mentioned solution stirred 1 hour at least at 30 ℃～40 ℃; Add quantitative sodium lauryl sulphate, oxidation dodecyl dimethyl amine successively and stir 1.5 hours postcooling to room temperature at 30 ℃～40 ℃ in above-mentioned solution, the finished product range estimation is white liquid, pH value 6.0～7.5.
Use the technology of coking acid sewage treating agent, this technology may further comprise the steps and adds promotor while stirring to stirring in coking acid sewage, solution adds the buffer coke charge agent while stirring to stirring in above-mentioned steps, with above-mentioned solution left standstill layering, the upper strata is light oil and coke powder, and lower floor is the water after handling.
When in the middle of equipment frock, using, guarantee that 2 medicament dog-houses intervals more than 10 meters, can rely on coking acid sewage to flow and stir, when the dog-house spacing does not satisfy 10 meters, need set up whipping appts, solution is fully mixed at dog-house.
Beneficial effect of the present invention:
1.. coking acid sewage treating agent provided by the present invention is obvious to the removal effect of acid waste water coke powder suspended substance/petroleum-type, reduced the content of coke powder and petroleum-type in the acid waste water after treatment, can prolong the life cycle of stripping tower tower tray, reduced the wash number of steam stripping plate, reduced running cost thereby greatly reduce working strength of workers.
2.. coking acid sewage treating agent provided by the invention uses process stabilizing reliable, is convenient to management, has impact resistance.
Embodiment
Promotor preparation in the coking acid sewage treating agent:
Promoter component proportioning table (unit gram)
Promotor prepares embodiment 1: by data in the last table prescription 1, getting concentration is that 34% hydrochloric acid, 0.7 gram is squeezed in the reactor, drops into the calcium oxide of 3.0 grams in hydrochloric acid while stirring, stirs 10 minutes; In above-mentioned solution, slowly add the water of 77.3 grams and the ferrous sulfate of 17 grams after 10 minutes while stirring; In 40 ℃～50 ℃ of the heating controlled temperature, the lasting stirring 1 hour, the mercaptoethanols that add 2.0 grams continue stirring and were cooled to room temperature in 1.5 hours, and the finished product range estimation is white liquid, pH value 3.8.
Promotor prepares embodiment 2: get each component repetition promotor by last table prescription 2 and prepare embodiment 1 step, the finished product range estimation is white liquid, pH value 3.9.
Promotor prepares embodiment 3: get each component repetition promotor by last table prescription 3 and prepare embodiment 1 step, the finished product range estimation is white liquid, pH value 4.0.
Promotor prepares embodiment 4: get each component repetition promotor by last table prescription 4 and prepare embodiment 1 step, the finished product range estimation is white liquid, pH value 3.5.
Promotor prepares embodiment 5: get each component repetition promotor by last table prescription 5 and prepare embodiment 1 step, the finished product range estimation is white liquid, pH value 3.6.
Promotor prepares embodiment 6: get each component repetition promotor by last table prescription 6 and prepare embodiment 1 step, the finished product range estimation is white liquid, pH value 3.7.
Buffer coke charge agent set of dispense is than table (unit gram)
The buffer coke charge agent prepares embodiment 1: by data in the last table prescription 1, get 77.1 gram water and squeeze into the dimethyl diallyl ammonium chlorides that add 14.5 grams behind the reactor in water while stirring and continue to stir 30 minutes; The water glass heat tracing that adds 0.9 gram in above-mentioned solution stirred 1 hour for 30 ℃～40 ℃; In above-mentioned solution, add 4.0 gram sodium lauryl sulphate successively, 3.5 gram oxidation dodecyl dimethyl amine stir 1.5 hours postcooling to room temperature at 30 ℃～40 ℃, the finished product range estimation is white liquid, pH value 6.8.
The buffer coke charge agent prepares embodiment 2: get each component repetition buffer coke charge agent by last table prescription 2 and prepare embodiment 1 step, the finished product range estimation is white liquid, pH value 6.2.
The buffer coke charge agent prepares embodiment 3: get each component repetition buffer coke charge agent by last table prescription 3 and prepare embodiment 1 step, the finished product range estimation is white liquid, pH value 6.1.
The buffer coke charge agent prepares embodiment 4: get each component repetition buffer coke charge agent by last table prescription 4 and prepare embodiment 1 step, the finished product range estimation is white liquid, pH value 7.3.
The buffer coke charge agent prepares embodiment 5: get each component repetition buffer coke charge agent by last table prescription 5 and prepare embodiment 1 step, the finished product range estimation is white liquid, pH value 6.4.
The buffer coke charge agent prepares embodiment 6: get each component buffer coke charge agent by last table prescription 6 and prepare embodiment 1 step, the finished product range estimation is white liquid, pH value 6.7.
Coking acid sewage treatment process: choose promotor and prepare promotor that embodiment 4 makes, buffer coke charge agent that preparation embodiment 5 makes medicament as following examples.
Decreasing ratio draws as follows in the middle of following examples data.
Get certain Refinery Coking acid waste water 1000ml in beaker, start gyratory agitation device, adding an amount of promotor with transfer pipet stirs in waste water, stirred for 3 seconds, add buffer coke charge agent liquor and stir, stir when separating when generation alumen ustum in the waste water and with waste water for 3 seconds, close whipping appts, left standstill 30 minutes, and observed the degree of compactness of alumen ustum size, settling velocity, alumen ustum, and take off clear liquid and be PH; Sulfide; Petroleum-type; Ammonia nitrogen; The project analysis of suspended substance.
Handle coking acid sewage and select orthogonal table L for use
9(3
4), 3 levels, 4 factors are done 9 processing to coking acid sewage, the results are shown in following table
The level of factor table
Waste water orthogonal table L
9(3
4)
From finding out: acid waste water A3B3; A2B2; The treatment effect of A2B3 is good, and promptly by the mutual test of orthogonal table, it is 10mL～15mL that the coking acid sewage of 1000mL is selected the promotor add-on for use, and buffer coke charge agent add-on is 5mL～6mL.
Utilize orthogonal table further to do mutual test
Utilize orthogonal table L
9(3
4), 3 levels, 4 factors, the promotor add-on of selecting for use is 10mL～9.5mL, and buffer coke charge agent add-on is that 4.8mL～5.1mL does 9 tests again to coking acid sewage, and its test-results sees the following form
The level of factor table
Waste water orthogonal table L
9(3
4)
Find out by last table orthogonal test: its result is preferably A3B3; Secondly be A3B2 and A2B3, take all factors into consideration the singularity because of the coking coking acid sewage, adding promotor in the 1000ml coking acid sewage is 10ml, and the buffer coke charge agent adds 5.1ml.
Coking acid sewage is carried out continuity detect, its test-results is as follows:
The result can find out processing back NH by experiment
3-N content on average drops to 794mg/l; Average decreasing ratio 80.4%; Oil-contg on average drops to 56mg/l; Average decreasing ratio 92.9%; Sulfide on average drops to 831mg/l; Average decreasing ratio 67%; Suspension coke powder content on average drops to 122mg/l; Average decreasing ratio 86%.Treatment effect is obvious.
More than experiment adds in the coking acid sewage and occurs precipitating after promotor, the buffer coke charge agent in 3 seconds and float on the beaker top on all fast, following clear liquid water quality is light yellow transparent liquid, clear liquid and sediment line of delimitation are very clear, and good degree of compactness is arranged, in overtesting can draw this coking acidity of 1000mL, need add promotor 10mL, buffer coke charge agent 5.1mL.Accessible decreasing ratio NH
3-N80.4%; Oil 92.9%; Sulfide 67%; Suspension coke powder 86%.1 ton of this coking acid sewage need add promotor 10.3kg～9.8kg; Buffer coke charge agent 5.1kg～5.6kg.
Segmentation input successively in the coking acid sewage pipeline is thrown in promotor, buffer coke charge agent, 10 meters at interval of promotor and buffer coke charge agent dog-houses, the water quality color is that grey yellow-green colour is the emulsification shape before discharge port detects processing, the pungent hydrogen sulfide odor of foul smelling, after adding two kinds of chemicals treatment, the as clear as crystal water quality of the micro-yellow of water quality color sees that from outward appearance and color treatment effect is obvious.
Coking acid sewage treating agent provided by the present invention has effect unique to the removal of coking acid sewage PetroChina Company Limited. class, suspension coke powder and sulfide, remove the obviously significantly minimizing of back water PetroChina Company Limited. class concentration, suspension coke powder, sulfide, content, coking acid sewage after treatment can reach stripping water inlet index.
Coking acid sewage treating agent provided by the invention uses process stabilizing reliable, be convenient to management, have impact resistance, solved the coke powder problem of stripper plant, guaranteed the steady running of coking acid sewage system and stripper plant, slowed down impact the terminal sewage-farm.Guarantee standard wastewater discharge.Increase medicament storage tank, slag ladle, pump just can be handled coking acid sewage on the basis of original equipment, can reduce processing cost.
Above-described only is preferred embodiment of the present invention; should be understood that for the person of ordinary skill of the art, under technology enlightenment provided by the present invention, as the common practise of chemical industry; other equivalent modifications and improvement can also be made, also protection scope of the present invention should be considered as.
Claims (5)
1. coking acid sewage treating agent, it is characterized in that: this coking acid sewage treating agent comprises promotor, buffer coke charge agent, and described promotor is composed of the following components by weight percentage
Mercaptoethanol 1.5%～3%
Ferrous sulfate 15%～25%
Calcium oxide 1%～5%
Hydrochloric acid (34%) 0.5%～1%
Water 66%～82%
Described buffer coke charge agent is composed of the following components by weight percentage
Dimethyl diallyl ammonium chloride 15%～25%
Oxidation dodecyl dimethyl amine (20%) 3.8%～5.5%
Sodium lauryl sulphate (K-12) 5.8%～10%
Water glass 0.3%～1%
Water 58.5%～75.1%
2. according to the described a kind of coking acid sewage treating agent of claim 1, it is characterized in that: the promotor of this waste water conditioner is made by following steps
I. hydrochloric acid is squeezed in the reactor, in hydrochloric acid, dropped into quantitative calcium oxide while stirring, stirred 10 minutes;
In above-mentioned solution, slowly add quantitative water and ferrous sulfate after ii.10 minute while stirring;
Iii. above-mentioned solution is heated to 40 ℃～50 ℃ and continues stirring until fewly after 1 hour, add quantitative mercaptoethanol and continue stirring until fewly after 1.5 hours, be cooled to room temperature.
3. according to the described a kind of coking acid sewage treating agent of claim 1, it is characterized in that: the buffer coke charge agent of this acidic waste water treatment agent is made by following steps
I. water is squeezed into and in water, added quantitative dimethyl diallyl ammonium chloride behind the reactor while stirring and continued stirring until few 30 minutes;
Ii. adding quantitative water glass heating in above-mentioned solution stirred 1 hour at least at 30 ℃～40 ℃;
Iii. in above-mentioned solution, add quantitative sodium lauryl sulphate, oxidation dodecyl dimethyl amine successively and stir 1.5 hours postcooling to room temperature at 30 ℃～40 ℃.
4. use such as the arbitrary scheme of claim 1 to 3 prepare the technology of coking acid sewage treating agent, and it is characterized in that: this technology may further comprise the steps
I. in coking acid sewage, add promotor while stirring to stirring;
Ii. in the solution of step I, add the buffer coke charge agent while stirring to stirring;
Iii. with above-mentioned solution left standstill layering, the upper strata is light oil and coke powder, and lower floor is the water after handling.
5. use such as the arbitrary scheme of claim 1 to 3 prepare the technology of coking acid sewage treating agent, and it is characterized in that: this technology may further comprise the steps
I. in tooling device coking acid sewage pipeline, add promotor;
Ii. at least 10 meters of promotor dog-house add the buffer coke charge agent in the distance step I;
Iii. with the described solution left standstill layering of step I i, the upper strata is light oil and coke powder, and lower floor is the water after handling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101172979A CN101565215B (en) | 2009-05-27 | 2009-05-27 | Coking acid sewage treating agent and using process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101172979A CN101565215B (en) | 2009-05-27 | 2009-05-27 | Coking acid sewage treating agent and using process |
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| Publication Number | Publication Date |
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| CN101565215A true CN101565215A (en) | 2009-10-28 |
| CN101565215B CN101565215B (en) | 2011-04-20 |
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| CN2009101172979A Active CN101565215B (en) | 2009-05-27 | 2009-05-27 | Coking acid sewage treating agent and using process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104689794A (en) * | 2015-03-23 | 2015-06-10 | 济南大学 | Lauryl sodium sulfate modified sand absorbing material and preparation method thereof |
| CN107117663A (en) * | 2017-03-31 | 2017-09-01 | 长乐巧通工业设计有限公司 | A kind of environment-protecting industrial waste water treating agent and preparation method thereof |
-
2009
- 2009-05-27 CN CN2009101172979A patent/CN101565215B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104689794A (en) * | 2015-03-23 | 2015-06-10 | 济南大学 | Lauryl sodium sulfate modified sand absorbing material and preparation method thereof |
| CN104689794B (en) * | 2015-03-23 | 2016-10-12 | 济南大学 | A kind of sodium lauryl sulphate modification sand adsorbing material and preparation method thereof |
| CN107117663A (en) * | 2017-03-31 | 2017-09-01 | 长乐巧通工业设计有限公司 | A kind of environment-protecting industrial waste water treating agent and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN101565215B (en) | 2011-04-20 |
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Owner name: GANSU YUCHEN CHEMICAL TECHNOLOGY CO., LTD. Free format text: FORMER NAME: GANSUYUCHEN CHEMICAL ENGINEERING DEVICE MATERIAL CO., LTD. |
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Address after: Xigu road 730060 Gansu city of Lanzhou province No. 699 Patentee after: Gansu Yuchen Chemical Technology Co., Ltd. Address before: Xigu road 730060 Gansu city of Lanzhou province No. 699 Patentee before: GansuYuchen Chemical Engineering Device Material Co., Ltd. |