CN105505471A - Coal water slurry gasification process method suitable for treating waste water containing high-concentration ammonia and nitrogen and COD - Google Patents
Coal water slurry gasification process method suitable for treating waste water containing high-concentration ammonia and nitrogen and COD Download PDFInfo
- Publication number
- CN105505471A CN105505471A CN201510943056.5A CN201510943056A CN105505471A CN 105505471 A CN105505471 A CN 105505471A CN 201510943056 A CN201510943056 A CN 201510943056A CN 105505471 A CN105505471 A CN 105505471A
- Authority
- CN
- China
- Prior art keywords
- water
- pipeline
- coal
- gas
- ash
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
- C10K1/10—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids
- C10K1/101—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids with water only
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Physical Water Treatments (AREA)
- Industrial Gases (AREA)
Abstract
The invention discloses a coal water slurry gasification process method suitable for treating waste water containing high-concentration ammonia and nitrogen and COD. The method includes the following steps that 1, coal water slurry is prepared; 2, the coal water slurry is combusted in a gasification furnace; 3, washing and cooling are carried out in a quenching chamber; 4, ash is collected and discharged; 5, crude gas is purified; 6, carbon black water is purified. By utilizing the production characteristic that it is needed to add part of water in coal water slurry preparation and adopting the process of preparing the coal water slurry by replacing clean river water with the waste water, problems existing in slurrying characteristics are effectively solved, the waste water is utilized without the limitation of the concentration of ammonia and nitrogen and COD, and industrialized continuous production is achieved; according to the coal water slurry prepared from the waste water containing high-concentration ammonia and nitrogen and COD, in the environment where the gasification combustion temperature is 1400 DEG C and the operation pressure is larger than 2 MPa, the waste water containing high-concentration ammonia and nitrogen and COD is subjected to pyrolysis, thoroughly treated and converted into useful synthesis ammonia and urea raw materials, and therefore the effect of making waste profitable is achieved.
Description
Technical field
The present invention relates to a kind of coal-water slurry gasification method being applicable to process ammonia nitrogen in high density, COD sewage.
Background technology
Be one of multiple production industry major pollutants discharged containing ammonia nitrogen, COD waste water, in water body, ammonia and nitrogen pollution is day by day serious.Ammonia nitrogen can cause water eutrophication, cause environmental pollution, too high ammonia nitrogen concentration can suppress nature nitrated, causes water hypoxia, causes fish poisoning, reduce water body self-purification ability, so control ammonia nitrogen waste water pollution cost-effectively have important value for environment.Current ammonia nitrogen in high density, COD method of wastewater treatment are a lot, existing process ammonia nitrogen in high density, COD sewage technique all exists that investment cost is large, running cost is high, schedule of operation is complicated, go out shipwreck controls, produces the shortcomings such as new pollution, common technique is difficult to the desired result reaching process, along with country is to the raising of environmental requirement, stricter to enterprise's emission request, ammonia nitrogen in high density, COD sewage disposal are more urgent.
Domestic water gas gasification technology is reached its maturity by development for many years.Such as CN100593509C discloses a kind of method using producing synthesis gas from hydrocarbon substance-containing slurry; CN1944592A discloses a kind of unloading type water coal slurry gasifying process with fast cooling room and fast cooling device.These two kinds of techniques all adopt containing solid, liquid state hydrocarbon substance, water, auxiliary agent, additive raw material slurry, do not relate to the process containing ammonia nitrogen in high density, COD sewage.As high concentration ammonia nitrogen sewage slurrying need be used, need to solve the technical problems such as stability of coal slurry, mobility, viscosity, equipment and pipeline corrosion, environmental protection.
Summary of the invention
The object of the invention is to provide one to be applicable to process ammonia nitrogen in high density for the deficiency existing for prior art, the technical scheme of the coal-water slurry gasification method of COD sewage, coal water slurry is utilized to make the productive prospecting needing adding portion water, sewage is adopted to replace Qingjian River water to make coal water slurry process, efficiently solve slurryability problem, and achieve sewage intercepting well not by ammonia nitrogen, COD concentration limits, and reach industrialization continuity production, the coal water slurry utilizing high-concentration sewage to make is gasification, and combustion temperature 1400 DEG C, under working pressure is greater than the environment of 2MPa, containing high concentration COD, ammonia-nitrogen sewage Pintsch process, process thoroughly, and change into useful synthetic ammonia, urea raw material, turn waste into wealth.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme:
Be applicable to the coal-water slurry gasification method processing ammonia nitrogen in high density, COD sewage, it is characterized in that comprising the steps:
1) coal water slurry preparation
By bituminous coal, ammonia nitrogen, COD sewage and additive agent mixture in grinding in ball grinder, prepare coal water slurry, then by the first pipeline, slip is sent to slurry vessel, then by shurry pump, coal water slurry is delivered to vapourizing furnace;
By selecting to adopt the proportioning of different ore deposits point bituminous coal and the selectivity quantitative proportioning of additive kind to the sewage of different concns, solve containing high-concentration sewage coal water slurry instability problem.
2) coal slurry gasifier combustion
Coal water slurry enters nozzle by second pipe, extraneous oxygen enters nozzle by the 3rd pipeline, central oxygen enters the pipe core of nozzle by the 4th pipeline, in jet hole, coal water slurry and oxygen collide, make coal water slurry and oxygen Homogeneous phase mixing and atomized after enter roasting kiln, under control burner hearth service temperature and pressure condition, carry out water generation reaction coal gas, and pollutent is decomposed completely;
3) quench chamber washing cooling
The water-gas generated through roasting kiln enters removable jew quench chamber, cooling washing water enter removable jew quench chamber through the 5th pipeline and directly contact with water-gas, carry out thermal exchange, the lime-ash in water-gas is washed, reduce water-gas temperature simultaneously, produce saturated steam;
Difference and other coal water slurry process, in order to adapt to burn containing ammonia nitrogen in high density, COD sewage, adopt plug-in removable jew quench chamber, this quench chamber is connected with vapourizing furnace by large flange, has following benefit: 1. roasting kiln height increases greatly, and space becomes large, extend reaction time, can guarantee that ammonia nitrogen, COD and other carbon containing protium waste liquids in sewage in the case of a high temperature can burn completely, ensure that pollutent does not bring rear system into, reach the object of disposing of sewage; 2. owing to mixing burning sewage, quench chamber is easily corroded, and needs routine preventive maintenance, replacing, and removable jew quench chamber can remove inspect and change, does not need to enter in burner hearth, and maintenance is convenient, and the repair time is short, safer.
4) ash collection discharge
The lime-ash washed out by removable jew quench chamber enters the first collection slag ladle through collection slag valve, after collecting lime-ash, by pressure release, deslagging operation, lime-ash is entered detritus pool through residual cake valve from the first collection slag ladle discharge, lime-ash picks up recovery by dragveyer, and buck flows into ash settling basin by side bilge;
5) raw gas purifying
A, water-gas from removable jew quench chamber out after enter surge tank through the 6th pipeline from bottom, directly contact with recirculated water in surge tank, the sooty water that the lime-ash washed and condensation are got off enters the second collection slag ladle, after collecting lime-ash, delivers to sooty water treatment system by the 11 pipeline;
B, water-gas from surge tank out after, one-level gas-liquid separator and secondary gas-liquid separator is entered successively through the 7th pipeline, the 8th pipeline, water-gas out enters scum dredger through the 9th pipeline from the top of secondary gas-liquid separator, through scum dredger removing carbon black water droplet, qualified coal gas delivers to subsequent processing by the tenth pipeline;
C, the sooty water separated from one-level gas-liquid separator, secondary gas-liquid separator and scum dredger deliver to sooty water treatment system via the 12 pipeline, the 13 pipeline and the 14 pipeline respectively;
Ammonia nitrogen in high density, COD sewage is burnt in order to adapt to mix, the wash cooling water used has to pass through the process of sooty water cleaning section and crosses comparatively totally and can use, namely the sooty water going out quench chamber, surge tank and gas-liquid separator etc. all will be recycled to sooty water cleaning section, uses by returning this operation after additive, biochemical aeration process.
6) sooty water purification
A, gasification carrys out sooty water and enters double-tube heat exchanger recovery heat via the 15 pipeline, enter flash tank by the 16 pipeline again and carry out atmospheric flashing, flashed vapour is through the direct emptying of the 17 pipeline, sooty water through atmospheric flashing enters sooty water storage tank through the 18 pipeline, flocculation agent enters after the 19 pipeline fully mixes with the sooty water from sooty water storage tank through the 20 pipeline and enters ash settling basin, and medicament is added in ash settling basin, aeration biochemical process, reduce the ammonia nitrogen in sooty water, COD, cyanide ion, primary water delivers to one-level clarifying tank through the first water pump, by the overflow of one-level clarifying tank to secondary clarifying tank, by the 21 pipeline, Scale inhibitors is added in secondary clarifying tank, sooty water after clarification sends gasification process back to by the second water pump,
Concentrated solution bottom b, one-level clarifying tank and secondary clarifying tank sends ash settling basin back to through the 22 pipeline and the 23 pipeline.
Owing to mixing burning high-concentration sewage, sooty water cleaning section of the present invention achieves circulation cleaning water total recycle process, in raw gas washing process, a large amount of recirculated water evaporations produces saturation steam, saturation steam participates in reacting in rear operation and raw gas, therefore have lost a large amount of recirculated water, can add containing the not high ammonia nitrogen of concentration, COD sewage supplements, owing to also having a large amount of ammonia nitrogen in the sooty water after washing, COD, in order to the ammonia nitrogen in remove portion sooty water, COD, the pollution factors such as cyanide ion, in ash settling basin, add sewage-treating agent carry out biochemical aeration process.
Further, step 2) in burner hearth service temperature be 1300 ~ 1400 DEG C, pressure is 2 ~ 3MPa, the residence time is greater than 8 seconds, and this service temperature, pressure and more thorough compared with the reaction under long residence time condition, improve the formation speed of water-gas.
Further, step 3) middle reduction water-gas temperature to 200 DEG C.
The present invention, owing to have employed technique scheme, has following beneficial effect:
1, the coal water slurry made with industrial sewage and purity oxygen are at the Thorough combustion under furnace high-temperature, high pressure conditions that gasifies, the pollution factors such as the ammonia nitrogen in sewage, organism are converted into carbon monoxide, carbonic acid gas, hydrogen, it is the unstripped gas of synthetic ammonia, urea product, turn waste into wealth, realize sewage recycling and utilize;
2, reasonable in design, appliance arrangement selection is inexpensive to be suitable for, and technology is created, technique, electromechanical instrument simplicity of design, operating safety, and civilwork engineering quantity is little, and Integrated comparative investment is minimum;
3, this technology scale is middle and small scale, hydrogen pressure position mesolow 1 ~ 3MPa, is applicable to hydrogen manufacturing and scale of modernizing and expanding the existing factory, and especially little factory makes the transition;
4, slurrying adopts rod milling technology can brownout, and gasification does not establish washing water recycle pump, desulfurization separate unit pump operating cycle, and pressure swing adsorption decarbonization power pole is low, and round Realization power consumption is minimum, is more suitable for high electricity price area;
5, each cover equipment technique arranges simply, reasonable benefit/risk, and cost of investment is low, consume low, advanced technology, operating aspect.
The present invention utilizes coal water slurry to make the productive prospecting needing adding portion water, sewage is adopted to replace Qingjian River water to make coal water slurry process, efficiently solve slurryability problem, and achieve sewage intercepting well and do not limit by ammonia nitrogen, COD concentration, and reach industrialization continuity production, under the coal water slurry utilizing high-concentration sewage to make is greater than 2MPa at gasification, and combustion temperature 1400 DEG C, working pressure, the residence time is greater than the environment of 8 seconds, containing high concentration COD, ammonia-nitrogen sewage Pintsch process, process thoroughly, and change into useful synthetic ammonia, urea raw material, turn waste into wealth.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 is a kind of gasification schema being applicable to process in the coal-water slurry gasification method of ammonia nitrogen in high density, COD sewage of the present invention;
Fig. 2 is the sooty water purification process figure in the present invention.
In figure: 1-ball mill; 2-slurry vessel; 3-shurry pump; 4-nozzle; 5-roasting kiln; 6-removable jew quench chamber; 7-first collects slag ladle; 8-surge tank; 9-second collects slag ladle; 10-one-level gas-liquid separator; 11-secondary gas-liquid separator; 12-scum dredger; 13-interchanger; 14-flash tank; 15-sooty water storage tank; 16-ash settling basin; 17-first water pump; 18-one-level clarifying tank; 19-secondary clarifying tank; 20-second water pump; 21-first pipeline; 22-second pipe; 25-the 3rd pipeline; 26-the 4th pipeline; 29-the 5th pipeline; 30-the 6th pipeline; 31-the 7th pipeline; 32-the 8th pipeline; 33-the 9th pipeline; 34-the tenth pipeline; 36-the 11 pipeline; 37-the 12 pipeline; 38-the 13 pipeline; 39-the 14 pipeline; 40-the 15 pipeline; 41-the 16 pipeline; 42-the 17 pipeline; 43-the 18 pipeline; 44-the 19 pipeline; 45-the 20 pipeline; 48-the 21 pipeline; 51-the 22 pipeline; 52-the 23 pipeline.
Embodiment
As shown in Figure 1 to Figure 2, be applicable to the coal-water slurry gasification method processing ammonia nitrogen in high density, COD sewage for the present invention is a kind of, comprise the steps:
1) coal water slurry preparation
By bituminous coal, grind in ball mill 1 containing ammonia nitrogen in high density, COD sewage and additive agent mixture, prepare coal water slurry, then by the first pipeline 21, slip is sent to slurry vessel 2, then by shurry pump 3, coal water slurry is delivered to vapourizing furnace;
By selecting to adopt the proportioning of different ore deposits point bituminous coal and the selectivity quantitative proportioning of additive kind to the sewage of different concns, solve containing high-concentration sewage coal water slurry instability problem.
2) coal slurry gasifier combustion
Coal water slurry enters nozzle 4 by second pipe 22, extraneous oxygen enters nozzle 4 by the 3rd pipeline 25, central oxygen enters the pipe core of nozzle 4 by the 4th pipeline 26, coal water slurry and oxygen high velocity impact in jet hole, make coal water slurry and oxygen Homogeneous phase mixing and after being fully atomized, enter roasting kiln 5, controlling under burner hearth service temperature and pressure condition, to carry out the violent main water-gas containing carbon monoxide and hydrogen of incomplete combustion reaction generation, burner hearth service temperature is 1300 ~ 1400 DEG C, pressure is 2 ~ 3MPa, reaction under this service temperature and pressure condition is more thorough, improve the formation speed of water-gas, and pollutent is decomposed completely,
3) quench chamber washing cooling
The water-gas generated through roasting kiln 5 enters removable jew quench chamber 6, cooling washing water enter removable jew quench chamber 6 through the 5th pipeline 29 and directly contact with high-temperature water gas, carry out thermal exchange, most of lime-ash in water-gas is washed, reduce water-gas temperature simultaneously, reduce water-gas temperature to 200 DEG C, produce a large amount of saturated steams, reach the object of washing cooling;
Difference and other coal water slurry process, in order to adapt to burn containing ammonia nitrogen in high density, COD sewage, adopt plug-in removable jew quench chamber 6, this quench chamber is connected with vapourizing furnace by large flange, has following benefit: 1. roasting kiln 5 increases highly greatly, and space becomes large, extend reaction time, can guarantee that ammonia nitrogen, COD and other carbon containing protium waste liquids in sewage in the case of a high temperature can burn completely, ensure that pollutent does not bring rear system into, reach the object of disposing of sewage; 2. owing to mixing burning sewage, quench chamber is easily corroded, and needs routine preventive maintenance, replacing, and removable jew quench chamber 6 can remove inspect and change, does not need to enter in burner hearth, and maintenance is convenient, and the repair time is short, safer.
4) ash collection discharge
The most of lime-ash washed out by removable jew quench chamber 6 enters the first collection slag ladle 7 through collection slag valve, after collecting lime-ash, by pressure release, deslagging operation, lime-ash is entered detritus pool through residual cake valve from the first collection slag ladle 7 discharge, lime-ash picks up recovery by dragveyer, and buck flows into ash settling basin 16 by side bilge;
5) raw gas purifying
A, water-gas from removable jew quench chamber 6 out after enter surge tank 8 through the 6th pipeline 30 from bottom, directly contact with recirculated water in surge tank 8, the sooty water that a small amount of lime-ash washed and condensation are got off enters the second collection slag ladle 9, after collecting certain lime-ash, deliver to sooty water treatment system by the 11 pipeline 36;
B, water-gas from surge tank 8 out after, one-level gas-liquid separator 10 and secondary gas-liquid separator 11 is entered successively through the 7th pipeline 31, the 8th pipeline 32, water-gas out enters scum dredger 12 through the 9th pipeline 33 from the top of secondary gas-liquid separator 11, carbon black water droplet is removed through scum dredger 12, qualified coal gas delivers to subsequent processing by the tenth pipeline 34, carries out converting post;
C, the sooty water separated from one-level gas-liquid separator 10, secondary gas-liquid separator 11 and scum dredger 12 deliver to sooty water treatment system via the 12 pipeline the 37, the 13 pipeline the 38 and the 14 pipeline 39 respectively;
Ammonia nitrogen in high density, COD sewage is burnt in order to adapt to mix, the wash cooling water used has to pass through the process of sooty water cleaning section and crosses comparatively totally and can use, namely the sooty water going out quench chamber, surge tank 8 and gas-liquid separator etc. all will be recycled to sooty water cleaning section, uses by returning this operation after additive, biochemical aeration process.
6) sooty water purification
A, gasification carrys out sooty water and enters double-tube heat exchanger 13 via the 15 pipeline 40 and reclaim heat, enter flash tank 14 by the 16 pipeline 41 again and carry out atmospheric flashing, flashed vapour is through the directly emptying of the 17 pipeline 42, sooty water through atmospheric flashing enters sooty water storage tank 15 through the 18 pipeline 43, flocculation agent enters after the 19 pipeline 44 fully mixes with the sooty water from sooty water storage tank 15 through the 20 pipeline 45 and enters ash settling basin 16, and medicament is added in ash settling basin 16, aeration biochemical process, reduce the ammonia nitrogen in sooty water, COD, cyanide ion, primary water delivers to one-level clarifying tank 18 through the first water pump 17, by one-level clarifying tank 18 overflow to secondary clarifying tank 19, by the 21 pipeline 48, Scale inhibitors is added in secondary clarifying tank 19, sooty water after clarification sends gasification process back to by the second water pump 20,
Concentrated solution bottom b, one-level clarifying tank 18 and secondary clarifying tank 19 sends ash settling basin 16 back to through the 22 pipeline the 51 and the 23 pipeline 52.
Owing to mixing burning high-concentration sewage, sooty water cleaning section of the present invention achieves circulation cleaning water total recycle process, in raw gas washing process, a large amount of recirculated water evaporations produces saturation steam, saturation steam participates in reacting in rear operation and raw gas, therefore have lost a large amount of recirculated water, can add containing the not high ammonia nitrogen of concentration, COD sewage supplements, owing to also having a large amount of ammonia nitrogen in the sooty water after washing, COD, in order to the ammonia nitrogen in remove portion sooty water, COD, the pollution factors such as cyanide ion, in ash settling basin 16, add sewage-treating agent carry out biochemical aeration process.
1.3 ten thousand Nm
3/ h high-concentration sewage device for producing hydrogen operating index
1, coal slurry gasifier runs and consumes: ton ammonia coal consumption 1.38 ~ 1.42t/t, than coal consumption: 560 ~ 610
2, power consumption (electric quality: >=380V): ton ammonia power consumption 150 ~ 180kwh/t (not containing empty point, synthesis)
3, wastewater treatment: ton ammonia treatment sewage 0.6 ~ 0.8t/t
4, oxygen consumption (oxygen quality:>=99.5%): ton ammonia oxygen consumption 820 ~ 880Nm
3/ h, consumes than oxygen: 360 ~ 415Nm
3/ KNm
3(CO+H
2)
5, byproduct steam: 0.4t/t ammonia
6, output: 99.9%H
2tolerance 1.3 ten thousand Nm
3/ h, folding ammonia 50,000 t/
7, coal water slurry gasification producer gas composition: H
2: 30 ~ 40%; CO:40 ~ 49%; CO
2: 15 ~ 20%; O
2:≤0.2%; CH
4:≤1.0%.
8, purified gas composition: H
2>=90%
9, hydrogen composition: H
2>=99.9%
10, the quality of gas: coal gas: temperature: 160 ~ 220 DEG C, pressure: 1.8 ~ 3.0MPa;
Hydrogen: temperature: 30 ~ 40 DEG C, pressure: 1.6 ~ 2.5MPa.
These are only specific embodiments of the invention, but technical characteristic of the present invention is not limited thereto.Any based on the present invention, for realizing substantially identical technique effect, done ground simple change, equivalent replacement or modification etc., be all covered by among protection scope of the present invention.
Claims (3)
1. be applicable to the coal-water slurry gasification method processing ammonia nitrogen in high density, COD sewage, it is characterized in that comprising the steps:
1) coal water slurry preparation
By bituminous coal, ammonia nitrogen, COD sewage and additive agent mixture in grinding in ball grinder, prepare coal water slurry, then by the first pipeline, slip is sent to slurry vessel, then by shurry pump, described coal water slurry is delivered to vapourizing furnace;
2) coal slurry gasifier combustion
Described coal water slurry enters nozzle by second pipe, extraneous oxygen enters described nozzle by the 3rd pipeline, central oxygen enters the pipe core of described nozzle by the 4th pipeline, in described jet hole, described coal water slurry and oxygen collide, make described coal water slurry and described oxygen Homogeneous phase mixing and atomized after enter roasting kiln, under control burner hearth service temperature and pressure condition, carry out water generation reaction coal gas, and pollutent is decomposed completely;
3) quench chamber washing cooling
The described water-gas generated through described roasting kiln enters removable jew quench chamber, cooling washing water enter described removable jew quench chamber through the 5th pipeline and directly contact with water-gas, carry out thermal exchange, the lime-ash in water-gas is washed, reduce water-gas temperature simultaneously, produce saturated steam;
4) ash collection discharge
The described lime-ash washed out by described removable jew quench chamber enters the first collection slag ladle through collection slag valve, after collecting described lime-ash, by pressure release, deslagging operation, described lime-ash is entered detritus pool through residual cake valve from described first collection slag ladle discharge, described lime-ash picks up recovery by dragveyer, and buck flows into ash settling basin by side bilge;
5) raw gas purifying
A, described water-gas from described removable jew quench chamber out after enter surge tank through the 6th pipeline from bottom, directly contact with recirculated water in described surge tank, the sooty water that the lime-ash washed and condensation are got off enters the second collection slag ladle, after collecting lime-ash, deliver to sooty water treatment system by the 11 pipeline;
B, described water-gas from described surge tank out after, one-level gas-liquid separator and secondary gas-liquid separator is entered successively through the 7th pipeline, the 8th pipeline, described water-gas out enters scum dredger through the 9th pipeline from the top of described secondary gas-liquid separator, through described scum dredger removing carbon black water droplet, qualified coal gas delivers to subsequent processing by the tenth pipeline;
C, the sooty water separated from described one-level gas-liquid separator, described secondary gas-liquid separator and described scum dredger deliver to described sooty water treatment system via the 12 pipeline, the 13 pipeline and the 14 pipeline respectively;
6) sooty water purification
A, gasification carrys out sooty water and enters double-tube heat exchanger recovery heat via the 15 pipeline, enter flash tank by the 16 pipeline again and carry out atmospheric flashing, flashed vapour is through the direct emptying of the 17 pipeline, sooty water through atmospheric flashing enters sooty water storage tank through the 18 pipeline, flocculation agent enters after the 19 pipeline fully mixes with the sooty water from described sooty water storage tank through the 20 pipeline and enters described ash settling basin, and medicament is added in described ash settling basin, aeration biochemical process, reduce the ammonia nitrogen in described sooty water, COD, cyanide ion, primary water delivers to one-level clarifying tank through the first water pump, by the overflow of described one-level clarifying tank to secondary clarifying tank, by the 21 pipeline, Scale inhibitors is added in described secondary clarifying tank, described sooty water after clarification sends gasification process back to by the second water pump,
Concentrated solution bottom b, described one-level clarifying tank and described secondary clarifying tank sends described ash settling basin back to through the 22 pipeline and the 23 pipeline.
2. a kind of coal-water slurry gasification method being applicable to process ammonia nitrogen in high density, COD sewage according to claim 1, it is characterized in that: step 2) in described burner hearth service temperature be 1300 ~ 1400 DEG C, described pressure is 2 ~ 3MPa, the residence time is greater than 8 seconds.
3. a kind of coal-water slurry gasification method being applicable to process ammonia nitrogen in high density, COD sewage according to claim 1, is characterized in that: step 3) the described water-gas temperature to 200 DEG C of middle reduction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510943056.5A CN105505471B (en) | 2015-12-16 | 2015-12-16 | A kind of coal-water slurry gasification method for being suitable for processing ammonia nitrogen in high density, COD sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510943056.5A CN105505471B (en) | 2015-12-16 | 2015-12-16 | A kind of coal-water slurry gasification method for being suitable for processing ammonia nitrogen in high density, COD sewage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105505471A true CN105505471A (en) | 2016-04-20 |
| CN105505471B CN105505471B (en) | 2018-06-29 |
Family
ID=55713780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510943056.5A Active CN105505471B (en) | 2015-12-16 | 2015-12-16 | A kind of coal-water slurry gasification method for being suitable for processing ammonia nitrogen in high density, COD sewage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105505471B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108328829A (en) * | 2018-01-30 | 2018-07-27 | 北京阳华科技有限公司 | A kind of usage on black water method of the useless pot of band |
| CN109280564A (en) * | 2017-07-20 | 2019-01-29 | 浙江丰登化工股份有限公司 | A kind of resource utilization method of the waste water containing DMF |
| CN109384340A (en) * | 2017-08-10 | 2019-02-26 | 通用电气神华气化技术有限公司 | Gasification waste water composite processing system and method |
| CN109705940A (en) * | 2019-01-16 | 2019-05-03 | 绍兴凤登环保有限公司 | The method of disposal and application of laboratory waste liquid |
| CN110665260A (en) * | 2019-09-09 | 2020-01-10 | 山西晋城无烟煤矿业集团有限责任公司 | Entrained flow coal gasification black ash water sedimentation and dispersion system and black ash water sedimentation method thereof |
| CN111234891A (en) * | 2020-02-10 | 2020-06-05 | 内蒙古大学 | Method for preparing high-performance coal water slurry by utilizing ammonia-containing wastewater in coal chemical industry |
| CN112320822A (en) * | 2020-10-20 | 2021-02-05 | 绍兴凤登环保有限公司 | Waste salt recycling treatment method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1944592A (en) * | 2006-11-08 | 2007-04-11 | 巨化集团公司 | Unloading type water coal slurry gasifying process with fast cooling room and fast cooling device |
| CN101407313A (en) * | 2008-07-04 | 2009-04-15 | 西北化工研究院 | Method for producing synthesis gas from hydrocarbon substance-containing slurry |
| CN102642876A (en) * | 2012-04-17 | 2012-08-22 | 浙江晋巨化工有限公司 | Method for co-production of urea and methanol by treating high-concentration ammonia nitrogen and 1, 5-cyclooctadiene (COD) sewage |
| KR101550319B1 (en) * | 2014-03-28 | 2015-09-04 | 고등기술연구원연구조합 | Coal gasification apparatus and cooling chamber thereof |
-
2015
- 2015-12-16 CN CN201510943056.5A patent/CN105505471B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1944592A (en) * | 2006-11-08 | 2007-04-11 | 巨化集团公司 | Unloading type water coal slurry gasifying process with fast cooling room and fast cooling device |
| CN101407313A (en) * | 2008-07-04 | 2009-04-15 | 西北化工研究院 | Method for producing synthesis gas from hydrocarbon substance-containing slurry |
| CN102642876A (en) * | 2012-04-17 | 2012-08-22 | 浙江晋巨化工有限公司 | Method for co-production of urea and methanol by treating high-concentration ammonia nitrogen and 1, 5-cyclooctadiene (COD) sewage |
| KR101550319B1 (en) * | 2014-03-28 | 2015-09-04 | 고등기술연구원연구조합 | Coal gasification apparatus and cooling chamber thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109280564A (en) * | 2017-07-20 | 2019-01-29 | 浙江丰登化工股份有限公司 | A kind of resource utilization method of the waste water containing DMF |
| CN109384340A (en) * | 2017-08-10 | 2019-02-26 | 通用电气神华气化技术有限公司 | Gasification waste water composite processing system and method |
| CN108328829A (en) * | 2018-01-30 | 2018-07-27 | 北京阳华科技有限公司 | A kind of usage on black water method of the useless pot of band |
| CN109705940A (en) * | 2019-01-16 | 2019-05-03 | 绍兴凤登环保有限公司 | The method of disposal and application of laboratory waste liquid |
| CN110665260A (en) * | 2019-09-09 | 2020-01-10 | 山西晋城无烟煤矿业集团有限责任公司 | Entrained flow coal gasification black ash water sedimentation and dispersion system and black ash water sedimentation method thereof |
| CN111234891A (en) * | 2020-02-10 | 2020-06-05 | 内蒙古大学 | Method for preparing high-performance coal water slurry by utilizing ammonia-containing wastewater in coal chemical industry |
| CN111234891B (en) * | 2020-02-10 | 2022-10-18 | 内蒙古大学 | Method for preparing high-performance coal water slurry by utilizing ammonia-containing wastewater in coal chemical industry |
| CN112320822A (en) * | 2020-10-20 | 2021-02-05 | 绍兴凤登环保有限公司 | Waste salt recycling treatment method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105505471B (en) | 2018-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105505471A (en) | Coal water slurry gasification process method suitable for treating waste water containing high-concentration ammonia and nitrogen and COD | |
| Shi et al. | Review on treatment technologies of coal gasification wastewater in China | |
| CN103880242B (en) | A kind of coal chemical industrial waste water advanced treatment process | |
| CN101298569B (en) | Gasification method of shock chilling type pulp or powder carbonaceous material | |
| CN102352268B (en) | Method for producing synthesis gas by using coal powder as raw material | |
| CN102229806B (en) | Green circular economy technology with coal coking as the main part | |
| CN101560035B (en) | Printing and dyeing sewage recycling treatment method | |
| CN100593509C (en) | Method for producing synthesis gas by using slime containing carbon-hydrogen substance | |
| Chu et al. | A review on resource utilization of oil sludge based on pyrolysis and gasification | |
| CN102041100A (en) | Method for treating high-concentration organic wastewater | |
| CN107057787B (en) | The method that coal conversion waste water cascade utilization prepares fuel slurry | |
| CN105238451B (en) | A kind of efficient combined-type biomass gasification burning cooling and purifying system | |
| CN101457160A (en) | Entrained flow coal gasification method employing solid state slag-tap suitable for high ash content and high ash melting point coal | |
| CN101985572A (en) | High-concentration sludge coke slurry and preparation method thereof | |
| CN105062568B (en) | Method for utilizing coal and natural gas jointly to produce synthesis gas | |
| CN203781978U (en) | Advanced treatment equipment for coal chemical industrial wastewater | |
| CN113444546A (en) | Purification treatment method for coke oven crude gas and tar ammonia water mixture | |
| CN210765189U (en) | Double-molten-bath organic solid waste blowing gasification device | |
| CN104593079B (en) | A kind of technique of broken coal production Clean synthesis gas | |
| CN103977871A (en) | Gasification system and method for high ash content feedstock | |
| CN1260326C (en) | Pressurized gasifying process of polynary slurry | |
| CN203474733U (en) | Clinker gasifying furnace of pressurizing fixed bed | |
| CN209193733U (en) | A kind of high concentration hard-degraded organic waste water processing unit | |
| CN203486931U (en) | Sewage treatment unit for production of coal chemical industry | |
| CN208266123U (en) | A kind of coal gasification apparatus wastewater recycling system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |