CN106479576A - The system and method that a kind of fluidized bed coal gasification and calcium carbide smelt coupling - Google Patents
The system and method that a kind of fluidized bed coal gasification and calcium carbide smelt coupling Download PDFInfo
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- CN106479576A CN106479576A CN201611149642.3A CN201611149642A CN106479576A CN 106479576 A CN106479576 A CN 106479576A CN 201611149642 A CN201611149642 A CN 201611149642A CN 106479576 A CN106479576 A CN 106479576A
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- 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
- C10J3/54—Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
- C10J3/56—Apparatus; Plants
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Abstract
The present invention relates to the system and method that fluidized bed coal gasification and calcium carbide smelt coupling.The system includes fluidized-bed gasification furnace, mixing arrangement, high temp modeling appts, furnace of calcium carbide, and fluidized-bed gasification furnace has coal entrance, gasification agent inlet, gas exit, semicoke outlet；Mixing arrangement has semicoke entrance, CaO entrance, binding agent entrance, mixed powder outlet, and wherein, semicoke entrance is connected by heat-insulation conveying device with semicoke outlet；High temp modeling appts have mixed powder entrance, mixing block outlet, and wherein, mixed powder entrance is connected by heat-insulation conveying device with mixed powder outlet；Furnace of calcium carbide has mixing block entrance, calcium carbide outlet, high temperature calcium carbide furnace gas export, and wherein, mixing block entrance is connected by heat-insulation conveying device with mixing block outlet.The present invention can produce calcium carbide using powdery semicoke with powdery CaO, while the sensible heat of gasification char and high temperature calcium carbide furnace gas is make use of, the recycling energy of high degree, reduce energy consumption.
Description
Technical field
The present invention relates to calcium carbide technical field of smelting, and in particular to what a kind of fluidized bed coal gasification and calcium carbide smelted coupling is
System and method.
Background technology
The coking of coal, gasification and synthesis calcium carbide, are that organic chemical industry's industry provides abundant crude benzol, tar, oven gas, conjunction
Become gas and acetylene, be three core pathways of coal chemical technology.At present, coking of coal cost of investment is high, product purification is not enough, product
Added value is not high.Coal Gasification Technology progress is slow, efficiency is low, small scale, industrialization level are low.By contrast, carbide acetylene work
Skill route is simple, and added value of product is high, good in economic efficiency, has been carried out large-scale industrial production, is that one kind compares and has development
The clean coal technology of potentiality and the approach of Coal Chemical Industry.Carbide acetylene can be used to synthesize benzene, rubber, polyvinyl chloride, polyacetylene etc.
Organic products.Compared with oil ethene route, the raw material sources of carbide acetylene are extensive, cheap, equipment investment is low.Acetylene ratio
Ethylene action is high, more conducively the carrying out of organic synthesis.
At present, the method for calcium carbide synthesis is mainly electrothermal way.The method converts electrical energy into heat energy by electric arc furnaces, heating
Melting lime and carbon raw coke occur combination reaction to produce calcium carbide.Electrothermal way is although with a long history, but there is high energy consumption, height
The shortcoming of pollution.Calcium carbide synthetic reaction is a solid phase endothermic reaction, and raw material mass transfer, heat transfer efficiency are low, chemical dynamics process
Time is long.High-temperature heating (2000～2200 DEG C) is needed, and highly active coke is needed as raw material.High-temperature heating (2000～
2200 DEG C) condition need substantial amounts of energy, the heat resistance to equipment has high demands, and increased cost of investment and energy consumption.Coke
Typically obtained by the coking of coal, long flow path, organic carbon depletion are high, power consumption is high, environmental pollution is serious.In order to improve lime-calcium carbide
The content of calcium carbide in congruent melting speed and product, will typically make lime excess 20wt% (wt% mass percent) in practical operation,
Increased material consumption and energy consumption.Byproducts of carbon monoxide effusion reaction system has taken away substantial amounts of heat, causes energy loss.
It is to reduce the power consumption in calcium carbide production at present to improve the electrical efficiency of furnace of calcium carbide and the thermal efficiency, and improves capacity usage ratio
Two big countermeasures, researcher proposes series and scheme.But, due to electrothermal way technique based on lime with
Coke direct reaction generates calcium carbide, is the solid phase endothermic reaction, improves electrical efficiency and the thermal efficiency of furnace of calcium carbide anyway, all cannot
Change the technique high energy consumption, high material-consumption, the present situation of high pollution.In order to improve calcium carbide production energy, realize the green of calcium carbide production
Change and sustainable development, it is necessary to reform electrothermal way synthetic route, using new calcium carbide synthesis technique and synthetic method.
In the gentle gasification of coal, byproduct semicoke will account for the 60wt%～90wt% of overall reaction product.In order to ensure
The economy of the whole gentle gasification of coal, and industrialization is realized, need our economic, utilization semicokes effectively and reasonably.Coal temperature
Coal, ash content and reaction condition etc. are depended primarily on the property of gasification char.
Adopt and gently gasified with the fluid bed of larger ratio of water to coal, as gasification temperature is relatively low, efficiency of carbon con version is relatively low, Gu
The product evaporated semicoke of body (residue after gasification) is containing unreacted carbon in a large number.Typically sent out using burning currently for gasification char
Electricity, the level of resources utilization are relatively low.Therefore, in the urgent need to developing a kind of high-valued utilization technique, to improve the utilization water of resource
Flat.
Prior art is mixed by a certain percentage, is then fed into furnace of calcium carbide typically using block orchid carbon and block lime
Carry out pyrolytic semlting.At present, material used by furnace of calcium carbide must be lump material, it is difficult to using semicoke powder, especially high temperature powder,
Carry out calcium carbide production.Not yet have carries out the report of calcium carbide smelting using gentle gasification char as carbon materials.
Content of the invention
It is an object of the invention to provide a kind of method of abundant higher value application gasification char, by powdery gasification char with
Powdery CaO mixes according to certain ratio, and high-temperature molding production calcium carbide, the reduce loss of high degree, energy saving.
Present invention firstly provides a kind of fluidized bed coal gasification and calcium carbide smelt the system for coupling, the system includes fluidisation
Bed gasification furnace, mixing arrangement, high temp modeling appts, furnace of calcium carbide.
The fluidized-bed gasification furnace has coal entrance, gasification agent inlet, gas exit, semicoke outlet.
The mixing arrangement has semicoke entrance, CaO entrance, binding agent entrance, mixed powder outlet.The semicoke entrance
It is connected by heat-insulation conveying device with the semicoke outlet of the fluidized-bed gasification furnace.
The high temp modeling appts have mixed powder entrance, mixing block outlet.The mixed powder entrance with described
The mixed powder outlet of mixing arrangement is connected by heat-insulation conveying device.
The furnace of calcium carbide has mixing block entrance, calcium carbide outlet, high temperature calcium carbide furnace gas export.The mixing block entrance
It is connected by heat-insulation conveying device with the mixing block outlet of the high temp modeling appts.
Preferably, the system also includes preheater, and the preheater has powdery CaO entrance, preheating CaO outlet, height
Warm calcium carbide furnace gas entrance, low temperature calcium carbide furnace gas export.
The preheating CaO outlet is connected by heat-insulation conveying device with the CaO entrance of the mixing arrangement, the high-temperature electric
Stone furnace gas entrance is connected with the high temperature calcium carbide furnace gas export of the furnace of calcium carbide.
The invention allows for a kind of utilization said system is comprised the following steps come the method for preparing coal gas and calcium carbide：
Coal gasification：Coal and gasifying agent are added the fluid bed gas via the coal entrance and the gasification agent inlet respectively
Change in stove, the coal gasification under T1 temperature, P pressure, obtain coal gas and semicoke.
Mixing：CaO, binding agent, the semicoke are added via the CaO entrance, binding agent entrance, semicoke entrance respectively
To in the mixing arrangement, mixed powder is prepared.
Shaping：The mixed powder is added in the high temp modeling appts by the mixed powder entrance, is mixed
Close block.
Calcium carbide is smelted：The mixing block is added in the furnace of calcium carbide, in T2 temperature by the mixing block entrance
Lower reaction obtains calcium carbide.
In the above-mentioned method for preparing coal gas and calcium carbide, the calcium carbide smelting process can also discharge high temperature calcium carbide furnace gas.
The high temperature calcium carbide furnace gas are passed through in the preheater carries out heat exchange with powdery CaO, the preheating CaO after being heated up
Send in the mixing arrangement and mixed.
In the above-mentioned method for preparing coal gas and calcium carbide, the high temperature calcium carbide furnace gas with the heat exchange mode of the powdery CaO are
Direct heat transfer or indirect heat exchange.
Particle diameter≤5 of the CaO, preferable particle size are≤3.
In the above-mentioned method for preparing coal gas and calcium carbide, particle diameter≤5 of the coal, preferable particle size≤3.The containing of the coal
Water rate≤8wt%.
In the above-mentioned method for preparing coal gas and calcium carbide, the T1 is 850～950 DEG C, the P≤0.1MPa.The T2 is
1650～2150 DEG C, its preferable temperature is 1950 DEG C.
In the above-mentioned method for preparing coal gas and calcium carbide, the semicoke, CaO, binding agent quality proportioning be 0.60～
0.70：1：0.01～0.03.
In the above-mentioned method for preparing coal gas and calcium carbide, the gasifying agent is vapor and oxygen.
In the above-mentioned method for preparing coal gas and calcium carbide, the vapor accounts for the percentage≤75wt% of the coal, preferably≤
60wt%.The oxygen accounts for the percentage≤15wt% of the coal, preferably≤10wt%.
The system and method that fluidized bed coal gasification proposed by the present invention and calcium carbide smelt coupling, can make full use of fluid bed gas
Change coal in stove gently to gasify the powdery gasification char of generation.While coal gas is prepared, using powdery gasification char and powdery CaO
Production calcium carbide.Can reduce simultaneously using gasification char and the sensible heat of high temperature calcium carbide furnace gas, the recycling energy of high degree
Energy consumption.
Description of the drawings
Fig. 1 is the system schematic that fluidized bed coal gasification of the present invention and calcium carbide smelt coupling.
Fig. 2 prepares the method flow diagram of coal gas and calcium carbide using the system shown in Fig. 1.
Reference in accompanying drawing is：
1st, fluidized-bed gasification furnace；2nd, preheater；3rd, mixing arrangement；4th, high temp modeling appts；5th, furnace of calcium carbide.
Specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment to the present invention is described in more details, so as to energy
The advantage of the solution of the present invention and its various aspects is enough more fully understood.However, specific embodiments described below and reality
It is only descriptive purpose to apply example, rather than limitation of the present invention.
As shown in figure 1, the fluidized bed coal gasification provided for the present invention and calcium carbide smelt the system schematic of coupling, including stream
Change bed gasification furnace 1, preheater 2, mixing arrangement 3, high temp modeling appts 4, furnace of calcium carbide 5.
Fluidized-bed gasification furnace 1 is reacted for coal gasification, generates coal gas and semicoke.It has coal entrance, gasification agent inlet,
Gas exit, semicoke outlet.
Preheater 2 is used for the intensification of powdery CaO and preheats, and obtains preheating CaO.Which has powdery CaO entrance, preheating CaO and goes out
Mouth, high temperature calcium carbide furnace gas entrance, low temperature calcium carbide furnace gas export.
Mixing arrangement 3 is used for the mixing of semicoke and preheating CaO, obtains mixed powder.It has semicoke entrance, CaO entrance,
Binding agent entrance, mixed powder outlet.Wherein, semicoke entrance is with the semicoke outlet of fluidized-bed gasification furnace 1 by being incubated conveying dress
Connection is put, CaO entrance is connected by heat-insulation conveying device with the preheating CaO outlet of preheater 2.
High temp modeling appts 4 are used for the shaping of granular material, obtain lump material.Which has mixed powder entrance, mixing
Block is exported.Wherein, mixed powder entrance is connected by heat-insulation conveying device with the mixed powder outlet of mixing arrangement 2.
Furnace of calcium carbide 5 is used for smelting the mixing block formed by semicoke and CaO, obtains calcium carbide.It has mixing block entrance,
Calcium carbide outlet, high temperature calcium carbide furnace gas export.Wherein, mixing block entrance is logical with the mixing block outlet of institute's high temp modeling appts 4
Heat-insulation conveying device connection is crossed, high temperature calcium carbide furnace gas export is connected with the high temperature calcium carbide furnace gas entrance of preheater 2.
In the present invention, inventor has all done isothermal holding to mixing arrangement 3 and high temp modeling appts 4, its internal work
Environment is fire-retardant environment.Also, the conveying of the solid material in system between each device all employs heat-insulation conveying device, with
When ensure to carry out under fire-retardant operating mode.Improve the utilization ratio of energy.
As shown in Fig. 2 preparing the method flow diagram of coal gas and calcium carbide for the present invention using the system shown in Fig. 1.Including step
Suddenly：
(1) coal gasification
Coal and gasifying agent are sent in fluidized-bed gasification furnace 1 via coal entrance and gasification agent inlet respectively, in temperature T1 is
850～950 DEG C, under conditions of pressure P≤0.1MPa, coal carries out partial gasification in gentle fluidized-bed gasification furnace, obtains coal gas
And semicoke.
Wherein, the coal that the present invention is selected is middle low-rank coal, has the following properties that：Particle diameter≤5, in the embodiment of the present invention
It is preferred that≤3；Moisture content≤the 8wt% of coal, ash fusion point >=1150 DEG C.Coal dry base content of ashes≤7wt%, dry base and wave
Send out a point content >=30wt%.Index of cementation≤10 of coal, in the embodiment of the present invention preferably≤5.
Gasifying agent in the present invention is the mixed gas of vapor and oxygen.Wherein, vapor be 0.6MPa, 200 DEG C
Superheated steam.Oxygen is pure oxygen, and purity is 99.999%.
Wherein, vapor accounts for the percentage≤75wt% of coal, the embodiment of the present invention preferably≤60wt%.Oxygen accounts for the hundred of coal
Point ratio≤15wt%, the embodiment of the present invention is preferred≤10wt%.
(2) mix
The semicoke that above-mentioned steps are obtained, i.e. gasification char, by heat-insulation conveying device under conditions of gasification temperature is close to quilt
Heat is delivered in mixing arrangement 3, sends into temperature >=830 DEG C during mixing arrangement 3.While add in mixing arrangement 3 heat CaO and
Binding agent, and the temperature close of the CaO of heat and binding agent and semicoke.After mixing, the mixing of semicoke, CaO, binding agent is obtained
Powder.
Wherein, CaO passes through the intensification preheating of preheater 2.The CaO that the present invention is selected is powdery, its particle diameter≤5, this
In inventive embodiments, preferred particle diameter is≤3.Binding agent is dryness, powder binder, and which has good sticking at high temperature
Knot and curing performance, can significantly increase the calorific intensity of molding materials.
Binding agent be extracted as raw material based on coal and purified, the organic matter of devolatilization, then allocate into certain
The mixture of the inorganic matter of amount.The binding agent is with higher thermoplasticity and dispersive property, energy in large temperature range
Enough it is well dispersed in semicoke, powdery CaO and promotes the liquid carbonized of mixed material, improves the softening meltbility of semicoke, make semicoke
Anisotropy tissue becomes flourishing, the final calorific intensity for improving molding materials.
To in mixing arrangement 3, the semicoke of addition, CaO, the quality proportioning of binding agent are 0.60～0.70：1：0.01～
0.03, the quality proportioning can be controlled by quantitative conveyer.
(3) it is molded
The mixed powder that above-mentioned steps are obtained is added in high temp modeling appts 4 by mixed powder entrance, is obtained
Mixing block.
Also, temperature when mixed powder sends into high temp modeling appts 4 via heat-insulation conveying device is >=815 DEG C.
(4) calcium carbide is smelted
The mixing block that above-mentioned steps are obtained is added in furnace of calcium carbide 5 by mixing block entrance, in temperature T2 is
Under conditions of 1650～2150 DEG C, reaction obtains calcium carbide, and generates high temperature calcium carbide furnace gas.The preferred reaction temperature of the embodiment of the present invention
Degree T2 is 1950 DEG C.
The heat-insulation conveying device arranged between each device in the present invention, it is ensured that enter the temperature of the mixing block of furnace of calcium carbide 5
Degree is not less than 50 DEG C of 1 operation temperature of fluidized-bed gasification furnace.Mixing block sends into temperature during furnace of calcium carbide 5 via heat-insulation conveying device
>=800 DEG C of degree.
The high temperature calcium carbide furnace gas that this step is obtained are admitted in preheater 2, are carried out directly or indirectly with powdery CaO therein
Heat exchange, can make the temperature of CaO be increased to >=830 DEG C, reclaim the sensible heat of high-temperature electric stone furnace gas, the low temperature calcium carbide furnace gas warp for obtaining
Purify rear outer row up to standard.
Embodiment 1
Particle diameter≤5mm, moisture content are 8%, dry base content of ashes for 7%, dry base volatile matter content for 30%, ash
Fusing point is 1150 DEG C, index of cementation be 10 middle low-order coal and gasifying agent send into fluidized-bed gasification furnace in.In gasifying agent, water steams
It is 75% that gas accounts for the percentage of coal, and oxygen accounts for the percentage 15% of coal.Temperature be 850 DEG C, under conditions of pressure 0.1MPa, in
Low-order coal carries out partial gasification in fluidized-bed gasification furnace, obtains coal gas and semicoke.Semicoke is sent into by heat-insulation conveying device mixed
Attach together in putting, while it is≤CaO of 5mm and binding agent to be added thereto to particle diameter, the quality proportioning of three is：Semicoke：CaO：Viscous
Knot agent=0.7：1：0.03, mixed powder is obtained.Mixed powder is added in high temp modeling appts, mixed block is obtained
Material.Then, mixing block is sent in furnace of calcium carbide, reaction under conditions of temperature is for 2150 DEG C obtains calcium carbide, and generates height
Warm calcium carbide furnace gas.Wherein, high temperature calcium carbide furnace gas are passed through in preheater, carry out intensification preheating to powdery CaO.
Embodiment 2
Particle diameter≤3mm, moisture content are 5.4%, dry base content of ashes for 6.5%, dry base volatile matter content and be
36%th, ash fusion point be 1204 DEG C, index of cementation be 5 middle low-order coal and gasifying agent send into fluidized-bed gasification furnace in.Gasifying agent
It is 58% that middle vapor accounts for the percentage of coal, and oxygen accounts for the percentage 10% of coal.Temperature be 950 DEG C, the bar of pressure 0.08MPa
Under part, middle low-order coal carries out partial gasification in fluidized-bed gasification furnace, obtains coal gas and semicoke.By semicoke by heat-insulation conveying device
Send in mixing arrangement, while it is≤CaO of 2.5mm and binding agent to be added thereto to particle diameter, the quality proportioning of three is：Half
Burnt：CaO：Binding agent=0.64：1：0.015, mixed powder is obtained.Mixed powder is added in high temp modeling appts, can
Obtain mixing block.Then, mixing block is sent in furnace of calcium carbide, reaction under conditions of temperature is for 2000 DEG C obtains electricity
Stone, and generate high temperature calcium carbide furnace gas.Wherein, high temperature calcium carbide furnace gas are passed through in preheater, carry out intensification preheating to powdery CaO.
Embodiment 3
Particle diameter≤2mm, moisture content are 4.7%, dry base content of ashes for 6.3%, dry base volatile matter content and be
34%th, ash fusion point be 1196 DEG C, index of cementation be 0 middle low-order coal and gasifying agent send into fluidized-bed gasification furnace in.Gasifying agent
It is 60% that middle vapor accounts for the percentage of coal, and oxygen accounts for the percentage 7.5% of coal.Temperature be 900 DEG C, pressure 0.09MPa
Under the conditions of, middle low-order coal carries out partial gasification in fluidized-bed gasification furnace, obtains coal gas and semicoke.Semicoke is filled by conveying is incubated
Put in feeding mixing arrangement, while it is≤CaO of 3mm and binding agent to be added thereto to particle diameter, the quality proportioning of three is：Half
Burnt：CaO：Binding agent=0.60：1：0.01, mixed powder is obtained.Mixed powder is added in high temp modeling appts, can be obtained
To mixing block.Then, mixing block is sent in furnace of calcium carbide, reaction under conditions of temperature is for 1950 DEG C obtains calcium carbide,
And generate high temperature calcium carbide furnace gas.Wherein, high temperature calcium carbide furnace gas are passed through in preheater, carry out intensification preheating to powdery CaO.
Percentage in above-described embodiment is mass percent.
As seen from the above-described embodiment, the present invention can be given birth to powdery CaO using powdery gasification char while coal gas is prepared
Electricity production stone.The recycling of the energy is achieved, saves energy consumption.
Finally it should be noted that：Obviously, above-described embodiment is only intended to clearly illustrate example of the present invention, and simultaneously
The non-restriction to embodiment.For those of ordinary skill in the field, can also do on the basis of the above description
Go out change or the variation of other multi-forms.There is no need to be exhaustive to all of embodiment.And thus drawn
Obvious change or change among still in protection scope of the present invention that Shen goes out.
Claims (10)
1. the system that a kind of fluidized bed coal gasification and calcium carbide smelt coupling, it is characterised in that the system includes fluidized gasification
Stove, mixing arrangement, high temp modeling appts, furnace of calcium carbide；
The fluidized-bed gasification furnace has coal entrance, gasification agent inlet, gas exit, semicoke outlet；
The mixing arrangement has semicoke entrance, CaO entrance, binding agent entrance, mixed powder outlet；The semicoke entrance and institute
The semicoke outlet for stating fluidized-bed gasification furnace is connected by heat-insulation conveying device；
The high temp modeling appts have mixed powder entrance, mixing block outlet；The mixed powder entrance is mixed with described
The mixed powder outlet of device is connected by heat-insulation conveying device；
The furnace of calcium carbide has mixing block entrance, calcium carbide outlet, high temperature calcium carbide furnace gas export；The mixing block entrance and institute
The mixing block outlet for stating high temp modeling appts is connected by heat-insulation conveying device.
2. system according to claim 1, it is characterised in that also include preheater, the preheater has powdery CaO and enters
Mouth, preheating CaO outlet, high temperature calcium carbide furnace gas entrance, low temperature calcium carbide furnace gas export；
The preheating CaO outlet is connected by heat-insulation conveying device with the CaO entrance of the mixing arrangement, the high temperature furnace of calcium carbide
Gas entrance is connected with the high temperature calcium carbide furnace gas export of the furnace of calcium carbide.
3. the system described in a kind of one of utilization claim 1-2 is come the method for preparing coal gas and calcium carbide, it is characterised in that include
Following steps：
Coal gasification：Coal and gasifying agent are added the fluidized-bed gasification furnace via the coal entrance and the gasification agent inlet respectively
In, the coal gasification under T1 temperature, P pressure, obtain coal gas and semicoke；
Mixing：The semicoke, CaO, binding agent are added to institute via the semicoke entrance, CaO entrance, binding agent entrance respectively
State in mixing arrangement, prepare mixed powder；
Shaping：The mixed powder is added in the high temp modeling appts by the mixed powder entrance, obtains mixed block
Material；
Calcium carbide is smelted：The mixing block is added in the furnace of calcium carbide by the mixing block entrance, anti-at a temperature of T2
Calcium carbide should be obtained.
4. method according to claim 3, it is characterised in that the calcium carbide smelting process can also discharge high temperature furnace of calcium carbide
Gas；
The high temperature calcium carbide furnace gas are passed through in the preheater carries out heat exchange with powdery CaO, and the preheating CaO after being heated up sends into
Mixed in the mixing arrangement.
5. method according to claim 4, it is characterised in that
The high temperature calcium carbide furnace gas are direct heat transfer or indirect heat exchange with the heat exchange mode of the powdery CaO；The particle diameter of the CaO
≤ 5, preferable particle size is≤3.
6. method according to claim 3, it is characterised in that
Particle diameter≤5 of the coal, preferable particle size≤3；Moisture content≤the 8wt% of the coal.
7. method according to claim 3, it is characterised in that
The T1 is 850～950 DEG C, the P≤0.1MPa；
The T2 is 1650～2150 DEG C, and its preferable temperature is 1950 DEG C.
8. method according to claim 3, it is characterised in that the semicoke, CaO, the quality proportioning of binding agent are 0.60
～0.70：1：0.01～0.03.
9. method according to claim 3, it is characterised in that the gasifying agent is vapor and oxygen.
10. method according to claim 9, it is characterised in that
The vapor accounts for the percentage≤75wt% of the coal, preferably≤60wt%；
The oxygen accounts for the percentage≤15wt% of the coal, preferably≤10wt%.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106946257A (en) * | 2017-03-13 | 2017-07-14 | 神雾环保技术股份有限公司 | Semi-coke powder prepares calcium carbide compound binding agent and the method for preparing calcium carbide |
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| CN105885953A (en) * | 2016-06-12 | 2016-08-24 | 北京京诚泽宇能源环保工程技术有限公司 | Device and method for preparing reducing gas by lignite gasification poly-generation |
| CN206266517U (en) * | 2016-12-13 | 2017-06-20 | 神雾环保技术股份有限公司 | The system that a kind of fluidized bed coal gasification and calcium carbide smelt coupling |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106946257A (en) * | 2017-03-13 | 2017-07-14 | 神雾环保技术股份有限公司 | Semi-coke powder prepares calcium carbide compound binding agent and the method for preparing calcium carbide |
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