CN105623741A - Method for preparing synthesis gas, and method for using calcium carbide furnace and shaft furnace together - Google Patents
Method for preparing synthesis gas, and method for using calcium carbide furnace and shaft furnace together Download PDFInfo
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- CN105623741A CN105623741A CN201610158737.5A CN201610158737A CN105623741A CN 105623741 A CN105623741 A CN 105623741A CN 201610158737 A CN201610158737 A CN 201610158737A CN 105623741 A CN105623741 A CN 105623741A
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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
- C10J3/48—Apparatus; Plants
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- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
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- 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
- C10J3/48—Apparatus; Plants
- C10J3/50—Fuel charging devices
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- 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
- C10J3/72—Other features
- C10J3/82—Gas withdrawal means
- C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
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- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
- C01B2203/0465—Composition of the impurity
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- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
- C01B2203/0465—Composition of the impurity
- C01B2203/0475—Composition of the impurity the impurity being carbon dioxide
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- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
- C01B2203/0465—Composition of the impurity
- C01B2203/0485—Composition of the impurity the impurity being a sulfur compound
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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
- C10J2200/00—Details of gasification apparatus
- C10J2200/12—Electrodes present in the gasifier
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- 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
- C10J2200/00—Details of gasification apparatus
- C10J2200/15—Details of feeding means
- C10J2200/152—Nozzles or lances for introducing gas, liquids or suspensions
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- 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
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
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- 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
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0959—Oxygen
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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
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0973—Water
- C10J2300/0976—Water as steam
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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
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0983—Additives
- C10J2300/0996—Calcium-containing inorganic materials, e.g. lime
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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
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
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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
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
- C10J2300/1612—CO2-separation and sequestration, i.e. long time storage
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- 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
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
- C10J2300/1615—Stripping
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- 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
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/164—Integration of gasification processes with another plant or parts within the plant with conversion of synthesis gas
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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
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/164—Integration of gasification processes with another plant or parts within the plant with conversion of synthesis gas
- C10J2300/1656—Conversion of synthesis gas to chemicals
Abstract
The invention discloses a method for preparing synthesis gas, and a method for using a calcium carbide furnace and a shaft furnace together. The method for preparing synthesis gas comprises the following steps: (1) carrying out combined treatment of a carbon-based raw material and a calcium-based raw material, so as to obtain furnace charge; (2) adding the furnace charge into a synthesis gas production space; (3) heating the furnace charge in the synthesis gas production space with a plurality of electrodes, and feeding oxygen, water vapor and coal powder into the synthesis gas production space with a plurality of spraying guns, so that the coal powder reacts with the oxygen and the water vapor, and calcium carbide and synthesis gas are obtained. According to the methods, as the spraying guns are arranged on a furnace body and used for providing raw materials for reaction, the yield of synthesis gas is improved during preparation of calcium carbide; moreover, the spraying guns are used for providing not only coal powder and oxygen, but also water vapor, and the water vapor reacts with the coal powder to generate large quantities of carbon monoxide and hydrogen, so that follow-up utilization of synthesis gas is facilitated.
Description
Technical field
The present invention relates to the method for method and furnace of calcium carbide and the shaft furnace coupling preparing synthetic gas.
Background technology
The development history of existing more than 50 year of China's calcium carbide industry, achieves achievement highly visible, and production capacity, output leap to the first in the world, and in high speed ascendant trend. In recent years, due to overinvestment, pell-mell development, being subject to many-sided restrictions such as market, raw material, the energy, environmental protection, within 2013, calcium carbide output accounts for world's calcium carbide production capacity more than 90% in addition. It is that energy consumption height, seriously polluted, the wasting of resources, cost height, deficiency in economic performance economic target fall behind that current calcium carbide produces the main problem existed. Production technology is first evolved, product performance stabilization, Energy harvesting optimization should become the target that calcium carbide manufacturing enterprise is currently pursued.
Furnace of calcium carbide the type of furnace be divided into open calcium carbide oven, semi closed (internal combustion type) furnace of calcium carbide and full-airtight carbide furnace 3 kinds. the type of furnace is different, and its smoke property is completely different. Open calcium carbide oven exhaust gas volumn is big, and cigarette temperature is low, is generally no more than 200 DEG C; Semi-hermetic calcium carbide stove cigarette temperature is higher, generally reaches more than 400 DEG C, exhaust gas volumn much slower; Full-airtight carbide furnace cigarette temperature is the highest, reaches 600��1000 DEG C. Closed type calcium carbide furnace produces 1t calcium carbide general by-product calcium carbide furnace gas (also claiming synthetic gas) 400m3, its main component: carbon monoxide accounts for 65-85%, hydrogen accounts for 7-12%, and energy loss is big, and exhaust gas volumn is low, and synthetic gas is mainly as fuel burning boiler or generating, and synthetic gas user is single and uneconomical. In addition, existing synthetic gas utilizes technology: for Chemical Manufacture after cleaning and desulfurization decarburization conversion, synthesis gas yield is low, and main component is carbon monoxide, and hydrogen source is in device for producing hydrogen, and technological equipment investment height, floor space is big.
Thus, method for the output and composition that regulate synthetic gas has to be studied.
Summary of the invention
The present invention is intended to one of technical problem at least solving existence in prior art. For this reason, it is an object of the present invention to propose a kind of method preparing synthetic gas, improved output, the composition of calcium carbide burner gas (synthetic gas) by regulation blowing coal amount, water vapor, amount of oxygen, simply, easily operate, cost of investment is low for method.
According to an aspect of the present invention, thus, the present invention provides a kind of method preparing synthetic gas. According to embodiments of the invention, described synthetic gas comprises hydrogen, carbon monoxide and carbonic acid gas and hydrocarbon polymer, utilizes furnace of calcium carbide to prepare described synthetic gas, and wherein, described furnace of calcium carbide comprises: body of heater, limits synthetic gas production space in described body of heater; Multiple electrode, described multiple electrode is embedded into described synthetic gas production space from described body of heater; Multiple spray gun, described multiple spray gun is embedded into described synthetic gas production space from the roof of described body of heater and/or sidewall, and for providing water vapor, oxygen and coal dust in described synthetic gas production space, wherein, the method preparing synthetic gas comprises:
(1) carbon based raw material and calcium based raw material are carried out combination treatment, to obtain furnace charge; (2) described furnace charge is added in described synthetic gas production space; (3) the described furnace charge in synthetic gas production space described in described multiple electrode pair is utilized to heat, and utilize described multiple spray gun to supply described oxygen, described water vapor and described coal dust in described synthetic gas production space, described coal dust and described oxygen and described steam reaction, to obtain calcium carbide and synthetic gas.
The method preparing synthetic gas according to embodiments of the present invention, by arranging spray gun on body of heater, utilizes spray gun to provide reaction raw materials, while preparing calcium carbide, also improves the output of synthetic gas. Further, spray gun is being utilized to provide on the basis of coal dust and oxygen, it is further provided water vapor, water vapor and coal dust reaction generate a large amount of carbon monoxide and hydrogen, are convenient to the later use of synthetic gas.
In addition, the method preparing synthetic gas according to the above embodiment of the present invention, it is also possible to there is following additional technology feature:
According to embodiments of the invention, by regulating the ratio of described water vapor, described oxygen and described coal dust, to control the ratio of hydrogen, carbon monoxide, carbonic acid gas and hydrocarbon polymer in described synthetic gas.
According to embodiments of the invention, the ratio of described oxygen, described water vapor and described coal dust is: (0��2.5): (0��2.88): (0��2.88).
According to embodiments of the invention, step (3) comprises further: utilize the described furnace charge in synthetic gas production space described in described multiple electrode pair to heat, to obtain molten materials; And add described furnace charge to described synthetic gas production space resume, and utilize described spray gun to supply described oxygen, described water vapor and described coal dust in described synthetic gas production space, described coal dust and described oxygen and described steam reaction, to obtain synthetic gas.
According to embodiments of the invention, when described molten materials occurs that electrode wears well phenomenon, add described furnace charge to described molten materials resume.
According to embodiments of the invention, in described spray gun, the carrier gas of coal dust is purification compression flue gas or CO2��
According to embodiments of the invention, the mass ratio of described coal dust and described carrier gas is 40:(0.5-3).
According to embodiments of the invention, described coal dust be selected from blue charcoal, brown coal, long-flame coal, bituminous coal and hard coal one of at least.
According to a further aspect in the invention, the present invention provides a kind of furnace of calcium carbide and the method for shaft furnace coupling. According to embodiments of the invention, utilizing furnace of calcium carbide to provide synthetic gas for shaft furnace, wherein, described furnace of calcium carbide comprises: body of heater, limits synthetic gas production space in described body of heater; Multiple electrode, described multiple electrode is connected with described body of heater and stretches in described synthetic gas production space; Multiple spray gun, described multiple spray gun is embedded into described synthetic gas production space from the roof of described body of heater and/or sidewall, for providing water vapor, oxygen and coal dust in described synthetic gas production space, wherein, the technique of described furnace of calcium carbide and described shaft furnace coupling comprises: joined by furnace charge in described synthetic gas production space; The described furnace charge in synthetic gas production space described in described multiple electrode pair is utilized to heat, and utilize described multiple spray gun to supply described oxygen, described water vapor and described coal dust in described synthetic gas production space, described coal dust and described oxygen and described steam reaction, to obtain calcium carbide and synthetic gas; Described synthetic gas is carried out purifying treatment, to obtain clean synthetic gas; And the synthetic gas of described cleaning is delivered to described shaft furnace, described shaft furnace utilizes the synthetic gas of described cleaning to react.
The method preparing synthetic gas according to embodiments of the present invention, the synthetic gas produced in the process preparing calcium carbide by the furnace of calcium carbide of the present invention is shaft furnace offer reductive agent after purification, it is achieved utilization of waste material, and, save the system investments preparing synthetic gas, reduce the production cost of shaft furnace product.
According to embodiments of the invention, the ratio of described oxygen, described water vapor and described coal dust is: (0��2.5): (0��2.88): (0��2.88).
The additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by the practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage from accompanying drawing below combining to the description of embodiment becoming obviously and it should be readily understood that wherein:
Fig. 1 shows the structural representation of furnace of calcium carbide according to an embodiment of the invention;
Fig. 2 shows the schematic flow sheet of the method preparing synthetic gas according to an embodiment of the invention;
Fig. 3 shows the flow process signal of the method for furnace of calcium carbide and shaft furnace coupling according to an embodiment of the invention.
Embodiment
Being described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish. It is exemplary below by the embodiment being described with reference to the drawings, only for explaining the present invention, and limitation of the present invention can not be interpreted as.
In describing the invention, term " longitudinal direction ", " transverse direction ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", the orientation of the instruction such as " end " or position are closed is based on orientation shown in the drawings or position relation, be only the present invention for convenience of description instead of require the present invention must with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
It should be noted that, term " first ", " the 2nd " are only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technology feature. Thus, be limited with " first ", the feature of " the 2nd " can express or implicit comprise one or more these features. Further, in describing the invention, unless otherwise explanation, the implication of " multiple " is two or more.
According to an aspect of the present invention, the present invention provides a kind of method preparing synthetic gas. According to embodiments of the invention, described synthetic gas can comprise the compositions such as hydrogen, carbon monoxide and carbonic acid gas, utilizes furnace of calcium carbide to prepare described synthetic gas. With reference to figure 1, according to embodiments of the invention, the structure of furnace of calcium carbide being explained, furnace of calcium carbide comprises: body of heater 100, multiple electrode 200 and multiple spray gun 300, wherein, limits synthetic gas production space in body of heater 100; Multiple electrode 200 is embedded into synthetic gas production space from body of heater 100; Multiple spray gun 300 is embedded into synthetic gas production space from the roof of body of heater 100 and/or sidewall, for providing water vapor, oxygen and coal dust in synthetic gas production space. With reference to figure 2, according to embodiments of the invention, the method preparing synthetic gas comprises:
S100 carbon based raw material and calcium based raw material carry out combination treatment and obtain furnace charge
According to embodiments of the invention, carbon based raw material and calcium based raw material are carried out combination treatment, obtains furnace charge. According to a particular embodiment of the invention, kind and the characteristic of carbon-based particles and calcium base particle are also not particularly limited, different carbon based raw materials and calcium based raw material can be selected according to need of production, and as required carbon based raw material and calcium based raw material are carried out pulverization process, the particle diameter of control furnace charge.
Furnace charge is added in synthetic gas production space by S200
According to embodiments of the invention, furnace charge is added in synthetic gas production space. According to some embodiments of the present invention, pipeline is utilized to continue to realize furnace charge is added in calcium carbide production space.
S300 utilizes electrode pair furnace charge to heat, and utilizes spray gun supply coal dust, water vapor and oxygen, obtains calcium carbide and synthetic gas
According to embodiments of the invention, the furnace charge in multiple electrode pair synthetic gas production space is utilized to heat, and utilize described multiple spray gun to oxygen gas-supplying in synthetic gas production space, water vapor and coal dust, coal dust and oxygen and steam reaction, obtain calcium carbide and synthetic gas. Wherein, " multiple electrode " and " multiple spray gun " is as long as the preparation that can meet calcium carbide and synthetic gas requires, it is possible to adjust according to the temperature of the volume in synthetic gas production space and reaction needed. According to a particular embodiment of the invention, furnace of calcium carbide comprises 3 electrodes. According to some embodiments of the present invention, furnace of calcium carbide comprises 3-5 spray gun. Wherein, it is necessary to explanation, the spout of spray gun is positioned at the top in molten bath.
The method preparing synthetic gas according to embodiments of the present invention, by arranging spray gun on body of heater, provides oxygen and coal dust as required in stove, make heat distribution in furnace of calcium carbide evenly, and can partly replace electrode heat supply, utilize this furnace of calcium carbide to produce calcium carbide, produce electricity consumption low. And, while preparing calcium carbide, it is also possible to improve the output of synthetic gas. And, there is provided on the basis of coal dust and oxygen utilizing spray gun, the spray gun of the present invention provides water vapor further, water vapor and coal dust reaction generate a large amount of carbon monoxide and hydrogen, it is convenient to the later use of synthetic gas, according to embodiments of the invention, this synthetic gas may be used for producing such as the alcohol class such as methyl alcohol and ethylene glycol and the reducing gas as shaft furnace.
According to some embodiments of the present invention, by regulating the ratio of water vapor, oxygen and coal dust, the ratio of hydrogen, carbon monoxide, carbonic acid gas and hydrocarbon polymer in control synthetic gas. Wherein, the reaction generating synthetic gas is as follows:
H2O+C=CO+H2, H2O+C=CO2+H2, O2+ C=CO, O2+ C=CO2, CO2+ C=CO
Thus, by the ratio of the water vapor of adjustment spray gun supply, oxygen and coal dust, H in control synthetic gas2With the ratio of CO, thus meet downstream Production requirement. According to some embodiments of the present invention, the ratio of oxygen, water vapor and coal dust is: (0��2.5): (0��2.88): (0��2.88), concrete, the ratio of oxygen, water vapor and coal dust can be 0:0:1,2.5:0:1,0:2.88:1,2.5:0:1,0:2.88:1, or 2.5:2.88:1, synthesis gas yield is by traditional 400Nm3It is increased to 1000NM3/ t. calcium carbide, is met shaft kiln directly reduced gas H2The high-quality synthetic gas of/CO=0.5��5.5.
According to some embodiments of the present invention, step (3) comprises further: utilize the furnace charge in multiple electrode pair synthetic gas production space to heat, to obtain molten materials; And add furnace charge to synthetic gas production space resume, and utilize spray gun to oxygen gas-supplying in synthetic gas production space, water vapor and coal dust, coal dust and oxygen and steam reaction, obtain synthetic gas.
According to some embodiments of the present invention, furnace charge can add according to the reaction process of calcium carbide and the production of synthetic gas in batches, such as, first add one batch of furnace charge, utilize electrode to heat, when furnace charge is molten state, continue to add furnace charge again in stove, and utilize spray gun to supply coal dust, water vapor and oxygen in synthetic gas production space, to make coal dust, water vapor and oxygen combustion produce heat to calcium carbide production space heat supply, improve calcium carbide production efficiency, increase the output of synthetic gas.
According to a particular embodiment of the invention, molten materials occurs that electrode wears well phenomenon, starts to add furnace charge to molten materials resume. Thus, occurring continuing to add furnace charge after electrode wears well phenomenon, it is possible to by traditional 40-60min, metallurgy is reduced to 30-40min, energy digestion significantly decline, production efficiency significantly improves.
According to embodiments of the invention, in described spray gun, the carrier gas of coal dust is purification compression flue gas or CO2. Coal dust utilizes carrier gas to spray from spray gun, and the kind of carrier gas is not particularly limited, as long as not easily reacting with coal dust, it may be preferred that carrier gas can be purification compression flue gas or CO2, wherein, purification compression flue gas be furnace of calcium carbide prepare in calcium carbide process produce flue gas through dedusting, washing, dehumidifying, compressor compresses, desulfurization and decarburization process obtain, such that it is able to discarded flue gas is recycled, save calcium carbide production cost.
According to embodiments of the invention, the mass ratio of coal dust and carrier gas is 40:(0.5-3). The effect of carrier gas is equivalent to power: coal dust sprays into calcium carbide production space.
According to embodiments of the invention, described coal dust be selected from blue charcoal, brown coal, long-flame coal, bituminous coal and hard coal one of at least. Thus, the cost of coal dust is low, reduces the production cost of calcium carbide further.
According to a further aspect in the invention, the present invention provides a kind of furnace of calcium carbide and the method for shaft furnace coupling. According to embodiments of the invention, utilizing furnace of calcium carbide to provide synthetic gas for shaft furnace, wherein, this synthetic gas comprises hydrogen, carbon monoxide, carbonic acid gas and hydrocarbon polymer. With reference to figure 1, according to embodiments of the invention, the structure of furnace of calcium carbide being described, this furnace of calcium carbide comprises: body of heater 100, multiple electrode 200 and multiple spray gun 300, wherein, limits synthetic gas production space in body of heater 100; Multiple electrode 200 is connected with body of heater 100 and stretches in synthetic gas production space; Multiple spray gun 300 is embedded into synthetic gas production space from the roof of body of heater 100 and/or sidewall, for providing water vapor, oxygen and coal dust in synthetic gas production space, with reference to figure 3, according to embodiments of the invention, the method of furnace of calcium carbide and shaft furnace coupling being explained, the method comprises:
Furnace charge is added in synthetic gas production space by S400
According to embodiments of the invention, furnace charge is joined in described synthetic gas production space. Thus, furnace charge is utilized to start to prepare calcium carbide.
S500 utilizes electrode pair furnace charge to heat, and utilizes spray gun supply coal dust, water vapor and oxygen, obtains calcium carbide and synthetic gas
According to embodiments of the invention, the furnace charge in multiple electrode pair synthetic gas production space is utilized to heat, and utilize multiple spray gun to oxygen gas-supplying in synthetic gas production space, water vapor and coal dust, coal dust and oxygen and steam reaction, obtain calcium carbide and synthetic gas. Thus, the heat provided by electrode, makes furnace charge react, and generates calcium carbide and synthetic gas. By spray gun to injecting oxygen in stove, water vapor and coal dust, oxygen, water vapor and coal dust generation chemical reaction, principal reaction is as follows: H2O+C=CO+H2, H2O+C=CO2+H2, O2+ C=CO, O2+ C=CO2, CO2+ C=CO, release of heat while generating a large amount of synthetic gas, heat can be delivered to stove inside circumference the place that a lot of electric arc can not act on or action effect is very poor, uniform heat distribution in furnace of calcium carbide.
According to some embodiments of the present invention, by regulating the ratio of water vapor, oxygen and coal dust, the ratio of hydrogen, carbon monoxide and carbonic acid gas in control synthetic gas. Wherein, the reaction generating synthetic gas is as follows:
H2O+C=CO+H2, H2O+C=CO2+H2, O2+ C=CO, O2+ C=CO2, CO2+ C=CO
Thus, by the ratio of the water vapor of adjustment spray gun supply, oxygen and coal dust, H in control synthetic gas2With the ratio of CO, thus meet downstream Production requirement. According to some embodiments of the present invention, the ratio of oxygen, water vapor and coal dust is: (0��2.5): (0��2.88): (0��2.88), concrete, the ratio of oxygen, water vapor and coal dust can be 0:0:1,2.5:0:1,0:2.88:1,2.5:0:1,0:2.88:1, or 2.5:2.88:1, it is possible to be met shaft kiln directly reduced gas H2The high-quality synthetic gas of/CO=0.5��5.5, synthesis gas yield is by traditional 400Nm3It is increased to 1000NM3/ t. calcium carbide.
Synthetic gas is carried out purifying treatment by S600, obtains clean synthetic gas
According to embodiments of the invention, synthetic gas is carried out purifying treatment, obtain clean synthetic gas. Thus, remove the water vapour in synthetic gas gas, impurity and the non-reduced gas such as carbonic acid gas, sulfurous gas, obtain clean synthetic gas, be convenient to later use.
The synthetic gas of cleaning is delivered to shaft furnace by S700, and shaft furnace utilizes clean synthetic gas to react
According to embodiments of the invention, the synthetic gas of cleaning being delivered to shaft furnace, shaft furnace utilizes clean synthetic gas to react.
The method preparing synthetic gas according to embodiments of the present invention, the synthetic gas produced in the process preparing calcium carbide by the furnace of calcium carbide of the present invention is shaft furnace offer reaction raw materials after purification, shaft furnace utilizes this raw material to carry out follow-up reaction, realize utilization of waste material, and, save the system investments preparing synthetic gas, reduce the production cost of shaft furnace product. According to embodiments of the invention, shaft furnace can utilize this synthetic gas to produce such as the alcohol class such as methyl alcohol and ethylene glycol and the reducing gas as shaft furnace.
Below with reference to specific embodiment, the present invention will be described, it is necessary to explanation, and these embodiments are only explanation property, and can not be interpreted as limitation of the present invention.
Embodiment 1:
Raw material:
Taking lime as calcium based raw material, wherein CaO content is 93%, and granularity is 5-40mm;
Taking blue charcoal as carbon based raw material, wherein, fixed carbon content is 83%, and granularity is 5-20mm;
The mixed spray of oxygen coal: take fine coal as raw material, granularity-200 order > 60%, fixed carbon content is 75%; Fine coal carrier gas is furnace of calcium carbide purification pressurization flue gas;
The pressure of water vapour is 1.2MPa, and the consumption of water vapor is 450kg/t. calcium carbide.
Preparation method:
(1) lime is mixed by 100:68 with blue charcoal, obtain furnace charge;
(2) material mixed is transported to furnace top bin by belt, feed bin furnace charge is opened arc by expecting under tremie pipe in furnace of calcium carbide, heating furnace charge;
(3) after occurring in furnace of calcium carbide that three-phase electrode wears well, tremie pipe continues blanking, and start the mixed spray of coal/water vapour, coal/carrier gas ratio=50kg:1kg, coal dust transfer pressure 0.45MPa, water vapour pressure 1.2MPa, amount of steam 450kg/t. calcium carbide, coal powder blowing amount is 200kg/t. calcium carbide, and the mixed spray of coal/water vapour is main, and following reaction: H occurs2O+C=CO+H2, H2O+C=CO2+H2, O2+ C=CO, O2+ C=CO2, CO2+ C=CO. With the addition of water vapor in mixed spray, synthesis gas yield significantly increases, and can increase H2Reach 560Nm3/ t calcium carbide, the output of synthetic gas is by traditional 400Nm3It is increased to 1000NM3/ t. calcium carbide, synthetic gas H2/ CO is than being 2:1, and after desulfurization decarbonization purification, synthetic gas meets methanol production unstripped gas and shaft kiln directly reduced gas specification of quality. Namely the synthetic gas produced in Appropriate application calcium carbide production process, eliminates again the investment of coal-made gas furnace, it is achieved that the Appropriate application of resource, reduces production cost.
Embodiment 2:
Raw material:
Taking lime as calcium based raw material, wherein CaO content is 93%, and granularity is 5-40mm;
Taking blue charcoal as carbon based raw material, wherein, fixed carbon content is 83%, and granularity is 5-20mm;
The mixed spray of oxygen coal: take fine coal as raw material, granularity-200 order > 60%, fixed carbon content is 75%; Fine coal carrier gas is furnace of calcium carbide purification pressurization flue gas;
The pressure of water vapour is 1.2MPa, and the consumption of water vapor is 405kg/t. calcium carbide.
Preparation method:
(1) lime is mixed by 100:68 with blue charcoal, obtain furnace charge;
(2) material mixed is transported to furnace top bin by belt, feed bin furnace charge is opened arc by expecting under tremie pipe in furnace of calcium carbide, heating furnace charge;
(3) after occurring in furnace of calcium carbide that three-phase electrode wears well, tremie pipe continues blanking, and start the mixed spray of coal/water vapour, coal/carrier gas ratio=50kg:1kg, coal dust transfer pressure 0.45MPa, water vapour pressure 1.2MPa, amount of steam 405kg/t. calcium carbide, coal powder blowing amount is 200kg/t. calcium carbide, and the mixed spray of coal/water vapour is main, and following reaction: H occurs2O+C=CO+H2, H2O+C=CO2+H2, O2+ C=CO, O2+ C=CO2, CO2+ C=CO. With the addition of water vapor in mixed spray, synthesis gas yield significantly increases, and can increase H2Reach 450Nm3/ t calcium carbide, can increase CO and reach 56Nm3/ t. The output of calcium carbide synthetic gas is by traditional 400Nm3It is increased to 1000NM3/ t. calcium carbide, synthetic gas H2/ CO is than being 1.5:1, and after desulfurization decarbonization purification, synthetic gas meets the specification of quality of ethylene glycol raw materials for production gas and shaft kiln directly reduced gas. Namely the synthetic gas produced in Appropriate application calcium carbide production process, eliminates again the investment of coal-made gas furnace, it is achieved that the Appropriate application of resource, reduces production cost.
In the description of this specification sheets, at least one embodiment that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to be contained in the present invention in conjunction with concrete feature, structure, material or feature that this embodiment or example describe or example. In this manual, the schematic representation of above-mentioned term is not necessarily referred to identical embodiment or example. And, the concrete feature of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although it has been shown and described that embodiments of the invention, it will be understood by those skilled in the art that: these embodiments can be carried out multiple change, amendment, replacement and modification when not departing from principle and the objective of the present invention, the scope of the present invention by claim and etc. jljl limit.
Claims (10)
1. preparing a method for synthetic gas, described synthetic gas comprises hydrogen, carbon monoxide, carbonic acid gas and hydrocarbon polymer, it is characterised in that, utilize furnace of calcium carbide to prepare described synthetic gas,
Wherein,
Described furnace of calcium carbide comprises:
Body of heater, limits synthetic gas production space in described body of heater;
Multiple electrode, described multiple electrode is embedded into described synthetic gas production space from described body of heater;
Multiple spray gun, described multiple spray gun is embedded into described synthetic gas production space from the roof of described body of heater and/or sidewall, for providing water vapor, oxygen and coal dust in described synthetic gas production space,
Wherein, the method preparing described synthetic gas comprises:
(1) carbon based raw material and calcium based raw material are carried out combination treatment, to obtain furnace charge;
(2) described furnace charge is added in described synthetic gas production space;
(3) the described furnace charge in synthetic gas production space described in described multiple electrode pair is utilized to heat, and utilize described multiple spray gun to supply described oxygen, described water vapor and described coal dust in described synthetic gas production space, described coal dust and described oxygen and described steam reaction, to obtain calcium carbide and described synthetic gas.
2. method according to claim 1, it is characterised in that, by regulating the ratio of described water vapor, described oxygen and described coal dust, to control the ratio of hydrogen, carbon monoxide, carbonic acid gas and hydrocarbon polymer in described synthetic gas.
3. method according to claim 1, it is characterised in that, the ratio of described oxygen, described water vapor and described coal dust is: (0��2.5): (0��2.88): (0��2.88).
4. method according to claim 1, it is characterised in that, step (3) comprises further:
The described furnace charge in synthetic gas production space described in described multiple electrode pair is utilized to heat, to obtain molten materials; And
Described furnace charge is added to described synthetic gas production space resume, and utilize described spray gun to supply described oxygen, described water vapor and described coal dust in described synthetic gas production space, described coal dust and described oxygen and described steam reaction, to obtain synthetic gas.
5. method according to claim 4, it is characterised in that, when described molten materials occurs that electrode wears well phenomenon, add described furnace charge to described molten materials resume.
6. method according to claim 1, it is characterised in that, in described spray gun, the carrier gas of coal dust is purification compression flue gas or CO2��
7. method according to claim 1, it is characterised in that, the mass ratio of described coal dust and described carrier gas is 40:(0.5-3).
8. method according to claim 1, it is characterised in that, described coal dust be selected from blue charcoal, brown coal, long-flame coal, bituminous coal and hard coal one of at least.
9. the method for a furnace of calcium carbide and shaft furnace coupling, it is characterised in that, utilize furnace of calcium carbide to provide synthetic gas for shaft furnace,
Wherein, described furnace of calcium carbide comprises:
Body of heater, limits synthetic gas production space in described body of heater;
Multiple electrode, described multiple electrode is connected with described body of heater and stretches in described synthetic gas production space;
Multiple spray gun, described multiple spray gun is embedded into described synthetic gas production space from the roof of described body of heater and/or sidewall, for providing water vapor, oxygen and coal dust in described synthetic gas production space,
Wherein, the technique of described furnace of calcium carbide and described shaft furnace coupling comprises:
Furnace charge is joined in described synthetic gas production space;
The described furnace charge in synthetic gas production space described in described multiple electrode pair is utilized to heat, and utilize described multiple spray gun to supply described oxygen, described water vapor and described coal dust in described synthetic gas production space, described coal dust and described oxygen and described steam reaction, to obtain calcium carbide and synthetic gas;
Described synthetic gas is carried out purifying treatment, to obtain clean synthetic gas; And
The synthetic gas of described cleaning is delivered to described shaft furnace, and described shaft furnace utilizes the synthetic gas of described cleaning to react.
10. method according to claim 9, it is characterised in that, the ratio of described oxygen, described water vapor and described coal dust is: (0��2.5): (0��2.88): (0��2.88).
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|---|---|---|---|---|
| CN106892429A (en) * | 2017-03-09 | 2017-06-27 | 神雾环保技术股份有限公司 | A kind of method of furnace of calcium carbide and production calcium carbide |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS575843A (en) * | 1980-06-11 | 1982-01-12 | Denki Kagaku Kogyo Kk | Production of high temperature reaction product |
| CN101830464A (en) * | 2010-05-14 | 2010-09-15 | 山西亿众公用事业有限公司 | Technique for producing calcium carbide and cogeneration by two-stage method and device thereof |
| CN105036132A (en) * | 2015-07-24 | 2015-11-11 | 北京神雾环境能源科技集团股份有限公司 | Calcium carbide preparing method |
-
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- 2016-03-18 CN CN201610158737.5A patent/CN105623741B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS575843A (en) * | 1980-06-11 | 1982-01-12 | Denki Kagaku Kogyo Kk | Production of high temperature reaction product |
| CN101830464A (en) * | 2010-05-14 | 2010-09-15 | 山西亿众公用事业有限公司 | Technique for producing calcium carbide and cogeneration by two-stage method and device thereof |
| CN105036132A (en) * | 2015-07-24 | 2015-11-11 | 北京神雾环境能源科技集团股份有限公司 | Calcium carbide preparing method |
Non-Patent Citations (1)
| Title |
|---|
| 傅承碧等: "《化工工艺学》", 31 January 2014, 中国石化出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106892429A (en) * | 2017-03-09 | 2017-06-27 | 神雾环保技术股份有限公司 | A kind of method of furnace of calcium carbide and production calcium carbide |
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