CN1290982C - +4,4'-diamino diphenylethene-2,2' disulfonic acid oxidation waste water treatment technology - Google Patents
+4,4'-diamino diphenylethene-2,2' disulfonic acid oxidation waste water treatment technology Download PDFInfo
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- CN1290982C CN1290982C CN 03104603 CN03104603A CN1290982C CN 1290982 C CN1290982 C CN 1290982C CN 03104603 CN03104603 CN 03104603 CN 03104603 A CN03104603 A CN 03104603A CN 1290982 C CN1290982 C CN 1290982C
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Abstract
The present invention belongs to the field of environmental protection, which particularly relates to technology for treating oxidized waste water generated in the process of producing DSD acid. The technology uses DSD acid oxidized waste water for producing coal water slurry. The present invention is characterized in that no additive or a small amount of additive is added in the process of producing the coal water slurry, and pollution components in the DSD acid oxidized waste water are used as effective dispersant and a stabilizing agent of the coal water slurry. The DSD acid oxidized waste water with high concentration is used for directly preparing the coal water slurry. The stability of the coal water slurry prepared by organic waste water with high concentration under various conditions is good, and the requirements for blowing and burning by the coal water slurry can be met completely. Compared with conventional coal water slurry, the coal water slurry obtained by the present invention has low cost. Compared with other DSD acid oxidized waste water treating technology, the direct cost for treating one ton of waste water by the technology of the present invention is only tens of yuan, while other treating technology has the defects of larger investment of treating technology and higher operation cost. Moreover, the direct cost for treating one ton of waste water by other technology is as high as more than one hundred yuan.
Description
Technical field
The invention belongs to the environmental protection field, particularly a kind of with the oxidized waste water treatment process that is produced in the DSD acid production process.
Background technology
4,4 '-diaminobenzil-2,2 '-disulfonic acid abbreviation DSD acid is a kind of important dyestuff intermediate.Its basic production technology is to be raw material with the para-nitrotoluene, under certain temperature condition, produces through chemical reaction processes such as sulfonation, oxidation, condensation and reduction.This processing method is simple, easy to control, but produces a large amount of filtration waste liquids in the oxidative condensation stage, i.e. in the DSD acid production process oxidation operation prepare DNS acid (4,4 '-dinitrobenzene toluylene-2,2 '-disulfonic acid) time oxidized waste water.Generally speaking, one ton of DNS acid of every production will be discharged about more than 20 tons of aterrimus waste water, COD
CrUp to 18000～25000mg/L, colourity is greater than 25000 times.Main organic composition mainly contains 2-methyl-5-nitro Phenylsulfonic acid, DNS acid (4 in the waste water, 4 '-dinitrobenzene toluylene-2,2 '-disulfonic acid) and the derivative that do not produce in raw material para-nitrotoluene, the DNS acid building-up process of complete reaction, these organic constituents in the waste water are parent with aromatic hydrocarbons and heterogeneous ring compound mostly, and have the colour developing group (as-N=N-,-N=O) and polar group (as-SO
4Na ,-OH ,-NH
2); Inorganics composition in the waste water is mainly NaCl, Na
2SO
4Deng.This waste water one is the COD height, and the BOD/COD value is less, has characteristics such as anti-photodissociation, anti-chemical oxidation, antibiont oxidation; The 2nd, colourity height, and component complexity, conventional water treatment process are all infeasible economically technically, if directly discharging can cause severe contamination to surrounding environment.
Coal water slurry is that a kind of novel low pollution is for oil fuel, it is the mixture of being made by the additive of the water of the coal of 65-70% different grain size distribution, 30-35% and about 1%, it had both kept the coal original physical characteristics, has the same flowability of oil and stable again, can be easy to dress, storage, realize pipe-line transportation and efficient burning as oil, be called as liquid coal product.The preparation of coal water slurry fuel generally comprises following process: the grinding of raw coal, the interpolation of additive (dispersion agent and stablizer etc.), the outfit of water etc.Because the efficiency of combustion of coal water slurry can be up to more than 98%, and the quantity discharged of sulfurous gas, oxynitride and dust concentration all can reach environmental requirement, can be widely used in station boiler, Industrial Boiler and Industrial Stoves for coal, for oil, for gas firing, also can be used as gasified raw material, be used to produce synthetic ammonia, synthesizing methanol etc.
Summary of the invention
The present invention seeks to fundamentally thoroughly to eliminate DSD acid oxidase waste water to the serious harm that environment brings, make DSD acid manufacturing enterprise realize " zero " discharging in order to find out a kind of acid oxidase of DSD cheaply waste water treatment process of suitable production application.
A kind of DSD acid oxidase waste water treatment process, this technology utilization DSD acid oxidase waste water is made coal water slurry, the making processes that it is characterized in that coal water slurry does not add or adds a small amount of additive, utilizes pollutant component in the DSD acid oxidase waste water as the effective dispersion agent and the stablizer of coal water slurry.Specific embodiment is: at first with pulverizer the coal primary fragmentation is become the coal dust of granularity less than 10mm, the high dense oxidized waste water of DSD acid with coal dust and dissolved solids content 10～20% feeds paste roller mill by the proportional range between 2: 3～3: 2 then, when coal grinds fineness-200 order content when reaching 60～80%, can be met the coal water slurry of coal water slurry winding-up combustion requirements.
Directly prepare coal water slurry with the high dense oxidized waste water of DSD acid, utilize pollution components in the waste water as the effective dispersion agent and the stablizer of coal water slurry, the stability of the coal water slurry for preparing with organic wastewater with high concentration under the various conditions is all fine, can satisfy coal water slurry winding-up combustion requirements fully, conventional coal water slurry cost is low than using, and this also is very rational economically.
Compare with the treatment process of other DSD acid oxidase waste water, the investment of other treatment process is bigger, and running cost is higher, and the priming cost of handling one ton of waste water is up to more than hundred yuan, and the priming cost of one ton of waste water of this art breading dozens of yuan only.
Description of drawings:
Fig. 1 is preparation of DSD acid oxidase waste water coal water slurry and applicating flow chart thereof.
Embodiment:
Embodiment 1: present embodiment is as shown in table 1 with the specificity analysis of coal.
Table 1 experiment is analyzed with coal characteristic
| Granularity (mm) | Ash content (%) | Fugitive constituent (%) | Sulphur content (%) | Thermal value (kcal/KG) | Ash fusibility ST (℃) | Ha Shi grindability index coefficient HGI | Moisture (%) |
| 0～45 | 13.8 | 33.7 | 1.2 | 6150 | ＞1450 | 70～75 | 9.5 |
The DSD acid oxidase waste water of the present embodiment high dense oxidized waste water of used DSD acid for directly discharging in producing, its main pollutant component content is as shown in table 2.
The main pollutant component content of table 2 DSD acid oxidase waste water
| Kind of waste water | Waste strength (%) | Organic content (%) | Inorganic content (%) |
| Inspissation liquid | 16.14 | 1.71 | 17.85 |
Directly prepare coal water slurry with DSD acid oxidase waste water, the coal water slurry compound concentration and the viscosity index result that draw are as shown in table 3.
Table 3 DSD acid oxidase waste water is directly prepared coal water slurry compound concentration and viscosity index
| Numbering | The concentration preparation | Viscosity (mPas) | The stability grade | |
| Theoretical concentration (%) | Compound concentration (%) | |||
| 1 | 68 | 49.9 | 1030 | One-level |
| 2 | 67 | 48.2 | 1041 | Superfine |
| 3 | 66 | 46.6 | 468 | One-level |
| 4 | 65 | 45.9 | 270 | One-level |
| 5 | 64 | 43.3 | 256 | One-level |
Embodiment 2: present embodiment uses the specificity analysis of coal with table 1.
DSD acid oxidase waste water the desorption liquid through macroporous resin adsorption after of the present embodiment high dense oxidized waste water of used DSD acid for directly discharging in producing, its main pollutant component content is as shown in table 4.
The main pollutant component content analysis of table 4 desorption liquid waste water
| Kind of waste water | Waste strength (%) | Organic content (%) | Inorganic content (%) |
| Desorption liquid | 15.5 | 6.3 | 9.2 |
Directly prepare coal water slurry with DSD acid oxidase waste water, the coal water slurry compound concentration and the viscosity index result that draw are as shown in table 5.
Table 5 desorption liquid is directly prepared coal water slurry compound concentration and viscosity index
| Numbering | The concentration preparation | Viscosity (mPas) | Stability (grade) | |
| Theoretical concentration (%) | Compound concentration (%) | |||
| 1 | 71 | 65.7 | 769 | One-level |
| 2 | 70 | 64.9 | 692 | One-level |
| 3 | 69 | 63.0 | 522 | One-level |
| 4 | 68 | 61.1 | 428 | One-level |
Embodiment 3: present embodiment uses the specificity analysis of coal with table 1.
Present embodiment considers that the amount of the DSD acid DSD of manufacturing enterprise acid oxidase waste water is bigger, if directly make coal water slurry, enterprise is difficult to whole consumption.Can at first utilize exhaust steam or other waste heat to concentrate DSD acid oxidase waste water in this case, and then make coal water slurry and burn.Coal water slurry compound concentration that be respectively concentrated 2 times in DSD acid oxidase waste water concentrating degree, concentrate 4 times, draws when concentrating 6 times, concentrated 8 times and viscosity index are shown in table 6～table 9.
Coal water slurry compound concentration and viscosity index when concentrating 2 times during table 6 DSD acid oxidase waste water
| Numbering | The concentration preparation | Viscosity (mpas) | Stability (grade) | |
| Theoretical concentration (%) | Compound concentration (%) | |||
| 1 | 67 | 51.7 | 2040 | / |
| 2 | 66 | 50.0 | 910 | One-level |
| 3 | 65 | 48.3 | 900 | One-level |
| 4 | 64 | 47.6 | 461 | One-level |
Coal water slurry compound concentration and viscosity index when concentrating 4 times during table 7 DSD acid oxidase waste water
| Numbering | The concentration preparation | Viscosity (mpas) | Stability (grade) | |
| Theoretical concentration (%) | Compound concentration (%) | |||
| 1 | 66.0 | 52.7 | 1306 | One-level |
| 2 | 65.5 | 52.8 | 1005 | One-level |
| 3 | 65.0 | 51.9 | 657 | One-level |
Concentrate 6 times of coal water slurry compound concentration and viscosity indexes constantly during table 8 DSD acid oxidase waste water
| Numbering | The concentration preparation | Viscosity (mpas) | Stability (grade) | |
| Theoretical concentration (%) | Compound concentration (%) | |||
| 1 | 66.5 | 55.6 | 1080 | One-level |
| 2 | 66.0 | 55.5 | 786 | One-level |
| 3 | 65.0 | 53.8 | 685 | One-level |
Concentrate 8 times of coal water slurry compound concentration and viscosity indexes constantly during table 9 DSD acid oxidase waste water
| Numbering | The concentration preparation | Viscosity (mpas) | Stability (grade) | |
| Theoretical concentration (%) | Compound concentration (%) | |||
| 1 | 67 | 58.75 | 1172 | One-level |
| 2 | 66 | 57.50 | 675 | One-level |
Claims (2)
1, a kind of DSD acid oxidase waste water treatment process, it is characterized in that this technology DSD acid oxidase waste water making coal water slurry, utilize pollutant component in the DSD acid oxidase waste water as the dispersion agent and the stablizer of coal water slurry, reduce the usage quantity of additive in the making processes of coal water slurry.
2, DSD acid oxidase waste water treatment process as claimed in claim 1, it is characterized in that DSD acid oxidase waste water treatment process process is: at first the coal primary fragmentation is become the coal dust of granularity less than 10mm with pulverizer, the high dense oxidized waste water of DSD acid with coal dust and dissolved solids content 10～20% feeds paste roller mill by the proportional range between 2: 3～3: 2 then, when coal grinds fineness-200 order content when reaching 60～80%, be met the coal water slurry of coal water slurry winding-up combustion requirements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03104603 CN1290982C (en) | 2003-02-17 | 2003-02-17 | +4,4'-diamino diphenylethene-2,2' disulfonic acid oxidation waste water treatment technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03104603 CN1290982C (en) | 2003-02-17 | 2003-02-17 | +4,4'-diamino diphenylethene-2,2' disulfonic acid oxidation waste water treatment technology |
Publications (2)
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|---|---|
| CN1513956A CN1513956A (en) | 2004-07-21 |
| CN1290982C true CN1290982C (en) | 2006-12-20 |
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| CN 03104603 Expired - Fee Related CN1290982C (en) | 2003-02-17 | 2003-02-17 | +4,4'-diamino diphenylethene-2,2' disulfonic acid oxidation waste water treatment technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101935055A (en) * | 2010-08-19 | 2011-01-05 | 浙江丰登化工股份有限公司 | Method for co-producing synthesis of ammonia through burning high-concentration waste water by using CWS (Coal Water Slurry) technology |
| CN102417249B (en) * | 2010-09-28 | 2013-05-01 | 中国石油化工股份有限公司 | Method for treating nitrobenzene waste water |
| CN104556263A (en) * | 2013-12-07 | 2015-04-29 | 广西梧州日成林产化工股份有限公司 | Method for treating resin esterification wastewater |
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