CN106016330A - Method for treating alkali waste in coal chemical industry - Google Patents
Method for treating alkali waste in coal chemical industry Download PDFInfo
- Publication number
- CN106016330A CN106016330A CN201610321117.9A CN201610321117A CN106016330A CN 106016330 A CN106016330 A CN 106016330A CN 201610321117 A CN201610321117 A CN 201610321117A CN 106016330 A CN106016330 A CN 106016330A
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- CN
- China
- Prior art keywords
- chemical industry
- coal chemical
- alkaline residue
- alkali waste
- waste
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K1/00—Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/10—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in the open air; in pans or tables in rooms; Drying stacks of loose material on floors which may be covered, e.g. by a roof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
Abstract
The invention discloses a method for treating alkali waste in the coal chemical industry. According to the method, a formation device is utilized for treatment. The method comprises the specific steps of blending the alkali waste in the coal chemical industry with water, and then conducting extrusion forming on the blended alkali waste in the coal chemical industry through the formation device; introducing air or CO2-containing gas into the alkali waste in the coal chemical industry obtained after extrusion forming, so that the materials are subjected to a neutralization reaction; and airing the alkali waste in the coal chemical industry obtained after the neutralization reaction, or drying the alkali waste in the coal chemical industry obtained after the neutralization reaction through a drier. According to the method for treating the alkali waste in the coal chemical industry, OH<-> in the alkali waste is neutralized through CO2 contained in the gas; meanwhile, by means of the formation device technology, the alkali waste is subjected to formation, waste materials are changed into things of value, and the formed alkali waste can be added into a gasification furnace for combustion, so that the purpose that the alkali waste does not leave the factory is achieved; the method further has the beneficial effects of being low in investment, quick in benefit gaining, low in operational risk, simple and reliable in equipment, low in operating cost and the like; and the dust content within the factory area is lowered to a certain extent, and the good effects of treating dirt with dirt and treating waste with waste are achieved.
Description
Technical field
The present invention relates to technical field of coal chemical industry, the processing method of a kind of Coal Chemical Industry alkaline residue.
Background technology
During coal gasification artificial oil and phenol water disposal, generally use alkali washing process, in the mistake of alkali cleaning for remove phenol in oil
Cheng Zhonghui produces the organic various spent lyes containing difficult degradation, and spent lye carries slag through digestion, and alkali liquor recirculation is used for extracting
Taking phenol, alkaline residue is discharged through on-hook, and its granularity is small, can largely cause dust pollution after drying, its COD,
The discharge capacity of sulfide and phenol, aphthenic acids is all up to the 40%-50% of oil plant gross contamination emission.Along with the whole society is to ring
Day by day the improving and contaminant transportation flowing strictly controlled requirement of guaranteed request, the most cost-effective completes various alkaline residue
Harmless treatment oneself become one of environmental issue that each Petrochemical Enterprises must solve.
Various alkaline residues make a big difference because of source its pollutant kind different and concentration, and different alkaline residues to use different process
Technique, oil plant is during producing the product such as motor petrol and liquefied gas, and almost all uses alkali (NaOH) to wash method removing
Mercaptan and the hydrogen sulfide of residual, to ensure the stability of the product such as gasoline and liquefied gas, thus produce a large amount of waste soda residue.At present,
The alkaline residue amount about thousands of tons of that Lian Shan factory of each petrochemical industry company limited produces every year, it is single mostly processing mode is to give in society some
Position processes, processing cost 1600 yuan/ton, not only expensive, and risk of environmental pollution is very big.A large amount of phenol contained therein,
Aphthenic acids etc., recycling cost is high, once flows into water body and soil, and consequence is extremely serious.Particularly phenols enters biology
With people's physical ability and protein bound, possible permanent damage can be caused, be extremely toxic substance.Therefore, study the harmless process of alkaline residue, return
Receive phenol therein to turn waste into wealth, offset division ring environment pollution significant.
Most of alkali residues processing techniques mainly use sulphuric acid to carry out alkaline residue neutralization, high with efficiency in the method, but to equipment requirements
Height, often results in outage because of etching problem in running, and secure context there is also greater risk simultaneously, easily causes
Personal injury.Flue gas uses with alkaline residue, but has mainly used general flue gas of heating furnace, the cigarette of general heating furnace
Difficulty is big, pressure is low, seriously corroded, use are inconvenient in gas conveying, therefore can not be widely popularized, and typically add
Heating furnace flue is typically negative pressure, even if supercharging, not only consumes a large amount of electric energy, also can only be pressurized to about 4KPa, conveying and
Use the most highly difficult.
For the process of alkaline sewage, the most current external way is to use wet oxidation process, and wet oxidation process can be divided into air
CWO under wet oxidation and catalysts conditions, air wet oxidation can be divided into again High Temperature High Pressure according to operating condition
Wet oxidation and mild wet air oxidation process.Wherein High Temperature High Pressure wet oxidation and CWO the most a small amount of application at home.
Mild wet air oxidation process ten SBR of the Sinopec Fushun academy exploitation that domestic application is more at present processes technique, by alkali
In slag, the removal of major part sulfide reaches to improve the purpose of alkaline residue biodegradability, and the alkaline residue after oxidation processes is biochemical through SBR again
Lower the concentration of pollutant further, finally enter back into oil-containing sewage treatment system and carry out advanced treating.
Facts have proved that said method processes the shortcoming existed: the usual treating capacity of (l) High Temperature High Pressure wet-type oxidation technology is the highest, and
One-time investment and operating cost are huge, the alkaline residue amount about 2000 tons produced every year such as Yang Zi petrochemical industry company limited oil plant,
Processing mode is to give some processed in units in society, processing cost 1600 yuan/ton, not only expensive but also risk of environmental pollution
Greatly.(2) mild wet air oxidation process+SBR technique does not affect the alkali that diesel refining produces compared with High Temperature High Pressure wet-type oxidation technology
Slag, catalytic gasoline refine aphthenic acids and the recovery of phenol and utilization in the alkaline residue of generation, but same be one-time investment and
Operating cost is higher, and based on 250 yuan/ton of handlings, only this item is also up to for 5,000,000/year, simultaneously because relax wet type oxygen
Change the reduction of operating severity, only remain the clearance higher to sulfide, COD oxidation removal rate is only 20-30%,
Even if still may be up to 5000-30000 by COD after SBR, increase follow-up oil-containing sewage treatment system process load and
The probability impacted.
Therefore, it is badly in need of a kind of easy and simple to handle, investment and the relatively low technique of processing cost is the task of top priority.
Summary of the invention
It is an object of the invention to provide kind of a Coal Chemical Industry alkaline residue processing method, the method utilizes shaped device to process, by phenol
Sodium processes the alkaline residue produced and carries out mediation aftershaping；Alkaline residue after shaping is passed through containing CO2Gas be neutralized reaction,
With brown coal mixing calcination after drying.
For achieving the above object, the present invention provides following technical scheme:
A kind of processing method of Coal Chemical Industry alkaline residue, the method utilizes shaped device to process, and concrete steps include:
1) with water, Coal Chemical Industry alkaline residue is in harmonious proportion, then uses shaped device extruded to the Coal Chemical Industry alkaline residue after being in harmonious proportion；
2) to the Coal Chemical Industry alkaline residue after extruded being passed through air or containing CO2Gas be neutralized reaction；
3) reacted for neutralization Coal Chemical Industry alkaline residue is dried or dried by baker.
As the further scheme of the present invention: step 1) in employing shaped device carried out mediation to Coal Chemical Industry alkaline residue be squeezed into
Dynamics is extruded uniform during type；Coal Chemical Industry alkaline residue shape after molding includes but not limited to circle, triangle or square；Its
The a length of 5-10mm of middle shape.
As the further scheme of the present invention: described air and containing CO2CO in gas2Concentration is 2-99%.Described air
With containing CO2Gas mainly includes sour gas CO2, and this sour gas is by the NaOH in spent lye or alkaline residue, cycloalkanes
Acid sodium, sodium phenolate, sodium sulfide are neutralized and are converted into sodium carbonate, aphthenic acids, phenol etc..
As the further scheme of the present invention: described air or containing CO2The temperature of the gas of gas is 40-150 DEG C.
As the further scheme of the present invention: step 2) in, the neutralization response time is 2-8 hour.
As the further scheme of the present invention: step 3) in, dry or the temperature dried is 18-155 DEG C.
As the further scheme of the present invention: step 3) in, dry or time of drying is 2-36 hour.
Compared with prior art, the invention has the beneficial effects as follows:
For solve above-mentioned present in equipment corrosion is serious, investment and problem and the defect such as operating cost is high, operation easier is big,
The present invention, with regard in coal gasification methanol synthetizing technology, needs under the demand of addition calcic stone during coal gasification, it is provided that a kind of coalification
The processing method of work alkaline residue, solves alkaline residue and stacks problem and a difficult problem for enterprise's outsourcing calcic stone.The present invention uses molding
Alkaline residue is shaped by device, uses sour gas CO2Or air is by the NaOH in alkaline residue, sodium naphthenate, phenol sodium, sulfur
Change sodium etc. and be converted into sodium carbonate, aphthenic acids, phenol and hydrogen sulfide etc.: then increase molding alkaline residue by the mode dried or dry
Intensity, replaces stone to burn in preferable for intensity molding alkaline residue joins gasification furnace, is finally reached alkaline residue recycling
Purpose.
The present invention utilizes CO contained in gas2Neutralize the OH in alkaline residue-, shaped device technology simultaneously, by alkaline residue molding, become
Waste be changed into values, and after making molding, alkaline residue can add gasification furnace and carries out calcination, reaches alkaline residue and does not dispatch from the factory purpose；This project also has investment
Less, the feature such as instant effect, operational risk are low, equipment is simple and reliable, operating cost is low, resource in factory can be made full use of, energy
Realize with watershed management, with the cleaning productive target of dirty pollution treatment.And reduce the content of on-site dust to a certain extent,
Serve with dirty pollution treatment, the good result of the treatment of wastes with processes of wastes against one another, be made that certain contribution for social enviroment protection.
Accompanying drawing explanation
Fig. 1 is the process chart of the present invention.
Detailed description of the invention
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, aobvious
So, described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, all
Belong to the scope of protection of the invention.
Embodiment 1
As it is shown in figure 1, the flow process that Coal Chemical Industry alkaline residue is processed of the present invention, specifically include that
All alkaline residues are squeezed in proportion blender and adds a certain proportion of water and fully concoct, dilute.
Alkaline residue after blending dilution, after falling into shaped device molding, is passed through gas and carries out counter current contacting and fully react.
By heater, gas is heated before being passed through.
By baker or dry will in molding and rear alkaline residue be dried process；
Alkaline residue after processing is sent into gasification furnace and is carried out calcination.
In order to verify the effect of the present invention, the embodiment of the present invention carries out tests below:
Experiment alkaline residue amount is 1kg, alkaline residue alkali collection scene output alkaline residue.After being passed through gas after molding 4 hours, temperature is 40 DEG C,
After neutralization, alkaline residue dried through 24 hours and 2 hours drying and processings respectively, and Falling strength test result (seeing table 1) is as follows:
Table 1
Test shows that drying and processing can more effectively promote the Falling strength value of molding alkaline residue.
Alkaline residue component analysis test after embodiment 2 molding
For investigating the change of calcium content in alkaline residue after molding, and the situation of change of its basicity before and after processing, to alkaline residue after molding
Calcium content and basicity be analyzed test, test result (seeing table 2) is as follows:
Table 2
From the point of view of test result, compared with raw material, it can be seen that the change of its basicity is more obvious, through being passed through CO2After,
The basicity processing molding alkaline residue reduces, and corresponding carbonate content raises, and the OH in alkaline residue is described-In an experiment with CO2Instead
Carbonate should be generated, the drop strength certain effect to molding alkaline residue.
In sum, shaped device is passed through gas neutralisation treatment alkaline residue and has the characteristics that compared with wet raw noodles,
(1) energy consumption aspect: owing to shaped device itself has certain mass, therefore device only consumes a small amount of in running
Electricity is for the operating of device, and catalytic wet oxidation to use powerful compressor by compressed air.(2) equipment investment side
Face: for the enterprise with 500,000 tons/year of methanol outputs, the alkaline residue of generation is so shaped device only needs about 2 sound to set
Standby, therefore investment will be far below catalytic wet oxidation device.(3) operation and labour cost aspect: alkali after shaped device molding
In slag and technical finesse, owing to equipment is simple, easy to operate, it is not required to increase staffing.
The above, the only present invention preferably detailed description of the invention and example, but protection scope of the present invention is not limited to
This, any those familiar with the art in the technical scope that the invention discloses, the change that can readily occur in or replace
Change, as long as (include name changing: become as added solidifying mixture with being passed through in sour gas after shaped device molding with dry technology
Type, straight forming, hot-air dry etc.) process alkaline residue all belong to abuse, all should contain protection scope of the present invention it
In.Therefore, protection scope of the present invention should be as the criterion with scope of the claims.
Although moreover, it will be appreciated that this specification is been described by according to embodiment, but the most each embodiment only comprises
One independent technical scheme, this narrating mode of description is only the most for clarity sake, and those skilled in the art should be by
Description is as an entirety, and the technical scheme in each embodiment can also be through appropriately combined, and forming those skilled in the art can
With other embodiments understood.
Claims (7)
1. a processing method for Coal Chemical Industry alkaline residue, the method utilizes shaped device to process, it is characterised in that concrete steps include:
1) with water, Coal Chemical Industry alkaline residue is in harmonious proportion, then uses shaped device extruded to the Coal Chemical Industry alkaline residue after being in harmonious proportion；
2) to the Coal Chemical Industry alkaline residue after extruded being passed through air or containing CO2Gas be neutralized reaction；
3) reacted for neutralization Coal Chemical Industry alkaline residue is dried or dried by baker.
The processing method of Coal Chemical Industry alkaline residue the most according to claim 1, it is characterised in that Coal Chemical Industry alkaline residue is in harmonious proportion by step 1) by employing shaped device extruded during extrude dynamics uniform；Coal Chemical Industry alkaline residue shape after molding includes but not limited to circle, triangle or square；The wherein a length of 5-10mm of shape.
The processing method of Coal Chemical Industry alkaline residue the most according to claim 1, it is characterised in that described air and containing CO2CO in gas2Concentration is 2-99%.
The processing method of Coal Chemical Industry alkaline residue the most according to claim 1, it is characterised in that described air or containing CO2The temperature of the gas of gas is 40-150 DEG C.
The processing method of Coal Chemical Industry alkaline residue the most according to claim 1, it is characterised in that step 2) in, the neutralization response time is 2-8 hour.
The processing method of Coal Chemical Industry alkaline residue the most according to claim 1, it is characterised in that in step 3), dries or the temperature dried is 18-155 DEG C.
The processing method of Coal Chemical Industry alkaline residue the most according to claim 1, it is characterised in that in step 3), dries or time of drying is 2-36 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610321117.9A CN106016330A (en) | 2016-05-16 | 2016-05-16 | Method for treating alkali waste in coal chemical industry |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610321117.9A CN106016330A (en) | 2016-05-16 | 2016-05-16 | Method for treating alkali waste in coal chemical industry |
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| CN106016330A true CN106016330A (en) | 2016-10-12 |
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| CN201610321117.9A Pending CN106016330A (en) | 2016-05-16 | 2016-05-16 | Method for treating alkali waste in coal chemical industry |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115232652A (en) * | 2022-05-30 | 2022-10-25 | 浙江石油化工有限公司 | Method for treating alkaline residue by combustion |
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|---|---|---|---|---|
| CN101270878A (en) * | 2008-04-18 | 2008-09-24 | 浙江大学 | City sewage sludge reclamation processing and utilization method |
| CN101428892A (en) * | 2008-12-15 | 2009-05-13 | 董国良 | Treating method for waste alkali or alkaline residue |
| CN203741192U (en) * | 2013-07-26 | 2014-07-30 | 新汶矿业集团有限责任公司 | Innocent treatment system for wastes in coal chemical industry |
| CN104016603A (en) * | 2014-06-27 | 2014-09-03 | 淮安市楚城水泥有限公司 | Preparation method of industrial waste residue mixed ore powder |
| CN104624616A (en) * | 2015-02-13 | 2015-05-20 | 内蒙古泰兴泰丰化工有限公司 | Device and method for treating mixed alkaline residue in indigotin production |
-
2016
- 2016-05-16 CN CN201610321117.9A patent/CN106016330A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101270878A (en) * | 2008-04-18 | 2008-09-24 | 浙江大学 | City sewage sludge reclamation processing and utilization method |
| CN101428892A (en) * | 2008-12-15 | 2009-05-13 | 董国良 | Treating method for waste alkali or alkaline residue |
| CN203741192U (en) * | 2013-07-26 | 2014-07-30 | 新汶矿业集团有限责任公司 | Innocent treatment system for wastes in coal chemical industry |
| CN104016603A (en) * | 2014-06-27 | 2014-09-03 | 淮安市楚城水泥有限公司 | Preparation method of industrial waste residue mixed ore powder |
| CN104624616A (en) * | 2015-02-13 | 2015-05-20 | 内蒙古泰兴泰丰化工有限公司 | Device and method for treating mixed alkaline residue in indigotin production |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115232652A (en) * | 2022-05-30 | 2022-10-25 | 浙江石油化工有限公司 | Method for treating alkaline residue by combustion |
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Application publication date: 20161012 |