CN85101039A - A kind of reduction-oxidation material also is suitable for reclaiming the method and the whole plant of heat energy gas simultaneously - Google Patents

A kind of reduction-oxidation material also is suitable for reclaiming the method and the whole plant of heat energy gas simultaneously Download PDF

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Publication number
CN85101039A
CN85101039A CN198585101039A CN85101039A CN85101039A CN 85101039 A CN85101039 A CN 85101039A CN 198585101039 A CN198585101039 A CN 198585101039A CN 85101039 A CN85101039 A CN 85101039A CN 85101039 A CN85101039 A CN 85101039A
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gas
shaft furnace
supply line
flow
reducing
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CN198585101039A
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桑顿马西森哈马尔斯各格
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SKF Steel Engineering AB
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SKF Steel Engineering AB
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/12—Making spongy iron or liquid steel, by direct processes in electric furnaces
    • C21B13/125—By using plasma
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
    • C22B4/08—Apparatus
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/12—Dry methods smelting of sulfides or formation of mattes by gases
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency

Abstract

The present invention is method and the whole plant that also is suitable for reclaiming heat energy gas about a kind of reduction-oxidation material simultaneously.Make the reducing gas that mainly contains carbon monoxide and hydrogen by heat energy from carbon containing or hydrocarbon material from least one plasma generator in the gas generation shaft furnace of separating.The reducing gas that makes like this, after optional separate sulfur and temperature regulation, be introduced in the reduction shaft furnace that contains oxidation material, the reducing gas that the part of discharging from shaft furnace consumed does not have water and powdery particle, thereafter the part air-flow that returns gas is used to reclaim heat energy, and a part of air-flow turns back in the technology and goes.

Description

A kind of reduction-oxidation material also is suitable for reclaiming the method and the whole plant of heat energy gas simultaneously
The present invention is method and the whole plant that also is suitable for reclaiming heat energy gas about a kind of reduction-oxidation material simultaneously.
With regard to technology one technology and from point of view of energy, the objective of the invention is in order to realize a kind of method of reducing of the best, comprise a kind of gas generating system of the generation heat energy of control especially easily, and allow to the reducing gas that simple and direct eliminating is used for the reduction-oxidation material at the beginning simultaneously.This adaptation of methods is very strong in addition, so that the suitable part air-flow that begins to be used for the reducing gas of reduction-oxidation material can be reused so that new reducing gas to take place.
This purpose reaches according to mode illustrated in the introduction of the present invention, comprises step
A, preparation mainly contains a kind of reducing gas of carbon monoxide and hydrogen from carbon containing and/or hydrocarbon-containing feedstock, and wherein said raw material is with a kind of oxygenant, also have optional a kind of slag former to send into the combustion zone together, simultaneously at least by a plasma generator supply heat energy;
B, the reducing gas that major part is made like this reaches the temperature that is suitable for follow-up reducing process, said gas is sent into contained in the shaft furnace of wanting the reductive oxidation material then, makes said gas flow to the said reductive material of wanting with adverse current;
C then, separates whole water and powdery particle basically from raw-gas, said gas partly consumes reducing power and contains oxydised component, like carbonic acid gas and water and powdery particle behind its reduction-oxidation material;
D then in order to reclaim heat energy, discharges the part air-flow that returns gas handled like this at least and the rest parts air-flow is turned back in the technology and go from system.
The oxygenant that is suitable for using is made up of oxygen and/or water and/or air and/or all or part of recycle gas of supplying with gasifying process by plasma generator.
The respective embodiments according to the present invention, the carbon containing and/or the hydrocarbon-containing feedstock that are used to take place reducing gas are powdery and/or aqueous and/or bulk material.
According to the present invention, the combustion zone correspondingly is that the position forms below the shaft of filling blocks of solid carbonaceous material, and preferably coke is as the carbonaceous charge in the shaft furnace.
According to the present invention, contain CO 2Part consumption after the part air-flow of gas (wherein contain CO 2) from shaft furnace, discharge, and can join in the generation shaft furnace of the block reduction of filling material, make H to utilize the heat in the shaft furnace charging above the combustion zone and from the suitable distance in combustion zone 2O changes into H 2+ CO and carbonic acid gas change into carbon monoxide.The part air-flow that refluxes from the reducing gas of this consumption of shaft furnace also can be as the carrier gas that adds powdery carbonaceous material and/or slag former at plasma generator right on and optional sweetening agent together.This part air-flow by the backflow of the reducing gas of the next consumption of shaft furnace also is used as the carrier gas by the plasma generator heat supply.
The respective embodiments according to the present invention, the reducing gas that takes place in gas generation shaft furnace can be by providing suitable sweetening agent and/or not containing any sulphur inclusion by making by the shaft furnace expellant gas through a filter sulphur device in the shaft furnace charging.On the other hand, sweetening agent can be added in the gasification zone.
According to further embodiment of the present invention, it is between 700 and 1000 ℃ that the temperature of the reducing gas of discharging from gas generation shaft furnace combustion zone is adjusted to outlet temperature.
A, by mix with reducing gass that above-mentioned parts of discharging from reduction shaft furnace in a large number consumed and/or
B, by make it the cooling and/or
C is by adding big water gaging and/or water vapor
The final temp of desirable gaseous mixture can reach easily being cooled first when being positioned at the washer that is right after in reduction shaft furnace upper gas relief outlet back if the reducing gas that only has a small amount of this part to consume is used to temperature regulation one this a part of reducing gas that consumed.Yet, if a large amount of Returning flow is used for mixing with de novo reducing gas, can suitably heat with before reducing gas mixes, for example use plasma generator.
According to a preferred embodiment of the present invention, the reducing gas physical efficiency takes place suitably by the gasification of two steps, raw material partly burns and gasification at least in part in vaporizer, the gaseous mixture that obtains thus is admitted in the shaft furnace that holds a carbon containing bulk material bed, in coke beds, be utilized to reduce the content of carbonic acid gas and water in the gas from the physics thermal content in the vaporizer gas, pilot-gas generation technology is so that expellant gas has temperature and the composition that is suitable for subsequent process steps.
The present invention also is included as enforcement the inventive method, and reduction-oxidation material and being suitable for simultaneously reclaims the whole plant of the gas of heat energy.This equipment mainly includes the reducing gas generating unit of a reaction chamber, have at least one to be contained in the plasma generator that the reaction chamber bottom has a nozzle, filter the shaft furnace that the sulphur device is connected with gas generating unit via one selectively, said shaft furnace contains the said reductive oxidation material of wanting, be installed in gas exhausting device on said shaft furnace top and be arranged in contiguous said gas exhausting device and prepare from the air-flow of deriving remove discharge gas that separator of the water that wherein contains and powdery particle and one is suitable for reclaiming heat energy the gas exhausting device of back and for a part airflow circulation making said air-flow at least to gas generating unit and/or for the temperature controlled main supply line of the reducing gas that gas generating unit is produced.
Other characteristics of the present invention will be illustrated in the appended claims.
To the present invention be described more fully by two embodiment shown in reference to the accompanying drawings below, wherein
Fig. 1 is the synoptic diagram according to whole plant of the present invention, has a single-stage gasifier, and
Fig. 2 is another the embodiment synoptic diagram according to whole plant of the present invention, has a secondary gasifier.
Among Fig. 1, the reduction shaft furnace of 1 expression reduction-oxidation lumpy material.Shaft furnace 1 is equipped with the feeding device 2 for the reductive oxidation material.Be the vent pipe 3 of a thermal reduction gas of mainly forming by carbon monoxide and hydrogen in the bottom of shaft furnace, said gas with adverse current by reaction shaft furnace 1, then by 4 discharges of a upper gas discharger.The separator 5 of escape route 4 and powdery particle and water, usually said washer connects, remove and to anhydrate and powdery particle, and the refrigerative clean air flows to relief outlet 6 by this place at the same time, the rest parts air-flow via main supply line 7 reuse following with the technology that further specifies in.Can be used as via relief outlet 6 expellant gas, for example fuel gas.Supply line 7 comprises a compressor 8.At least one plasma generator 10 has its nozzle in gas generation shaft furnace.12 represent the blowpipe of supply gas generation material requested, and 13 representatives are from a bottom relief outlet of gas generation shaft furnace.Main supply line 7 is by the gas that returns that is mainly the no carbonic acid gas of supply, mix with the reducing gas of fresh generation, thereby be connected with second main supply line 14 of attemperation, and via branch's supply line 15,15a also can be connected respectively to the front portion of the inlet and the plasma generator 10 of plasma generator 10, the i.e. inside of housing.Compressor 8a III is installed on the supply line 15 with joining.
This device provides following function device in principle:
-via first branch conduit 16, supply line can be connected to the top of producer gas generator shaft furnace;
-main supply line 7 can be connected to the gasification zone of shaft furnace 11 bottoms via secondary branch line 15 and 15a, promptly returning gas can be via pipe 15, supply with plasma generator the front portion and, after returning gas and in compressor 8a, compressing, can be pulled away to pass through plasma generator via 15a;
-via another branch conduit 17, branch line 14 can be connected with the reducing gas of discharging from producer gas generator and leave the top of producer gas generator via vent pipe 18, and
-via another branch conduit 19, supply line 14 can by pipe 21, be connected to the reducing gas spout of filter sulphur device 22 through a mixing section 20, and last, supply line 14 is connected to reducing gas pipe 21 in the right on that reducing gas enters reduction shaft furnace.
That therefore, is supplied returns CO in the gas 2Content can be adjusted fully.
For example, for the pipe 18 of drawing institute's vent gas body and function from device is equipped with a gas discharge outlet 23b, and gas discharge outlet 23a is being housed on the pipe 21 and another relief outlet 23 is being housed on vent pipe 3.
For example the supply line 9 with the reinforcer of oxygen and/or water and/or air form can be directly connected to plasma generator 10, and oxygenant can be sent to the reaction zone of shaft furnace 11 bottoms after optional preheating.
Equipment shown in Fig. 1 acts on as follows in principle:
Enter the reducing gas of the oxidation material in the reduction shaft furnace 1 in the shaft furnace 1 via gas feed 3, be when supplying heat energy in principle by at least one plasma generator 10, carbon containing and/or hydrocarbon-containing feedstock, with oxygenant and arbitrarily slag former be fed to the combustion zone of gas generation shaft furnace 11 bottoms, in producer gas generator 11, be made.The reducing gas that obtains is like this reached be suitable for the temperature of oxidation material in the reduction shaft furnace 1 subsequently and flow to and want the reductive material with adverse current.After oxidation material was reduced, reducing gas contained oxidation component, as carbonic acid gas and water and powdery particle, therefore partly consumed its reducing power.Reducing gas is discharged from the top of reduction shaft furnace via gas exhausting device 4, in washer 5 separate and anhydrate and powdery particle thereafter, in washer 5, handle with this method, thereby the gas that also is cooled, can at random from device, remove and be used for then via gas outlet pipe 6, for example, reclaim heat energy with the form of fuel gas.Simultaneously, the remainder air-flow of this gas can turn back in the technology by supply line 7, can reuse for reducing gas takes place.
Gas in the shaft furnace 11 takes place and can reach with some selectable methods.Powdery or liquid carbon-containing and/or hydrocarbon-containing feedstock can be blown into the gasification zone by for example supply line 12, and in this case, oxygenant such as oxygen or water vapor can be sent into reaction zone by plasma generator.The circulation gas physical efficiency infeeds the forward gasification zone of plasma burner via pipe 15, or said gas can be supplied with by plasma generator via pipe 15a.Carbon containing and/or hydrocarbon-containing feedstock also can be supplied with bulk via gas generation shaft furnace top, so that the gasification zone forms in the shaft furnace bottom of filling blocks of solid carbonaceous material.Coke is suitable for use as the charge solids in the shaft furnace.
In addition, a water or a part also can be admitted to gas generation shaft furnace 11 via the reducing gas of the part consumption of supply line 7 and 1 discharge of bye-pass 16 autoreduction shaft furnaces under the situation of the block reducing material of this filling.Be admitted to the top of shaft furnace itself in other words and with a certain distance from the gasification zone, utilize heat in the shaft furnace charging like this to transform H 2O becomes H 2+ O 2And carbonic acid gas becomes carbon monoxide.
Gas in the shaft furnace 11 takes place also can be by means of water, water vapor or a kind of part air-flow that consumed by the part of said reducing gas of from reduction shaft furnace, discharging or the carrier gas of forming by oxygen or a mixture or oxygen and water vapor, by adding powdery, carbonaceous material, selectively with sweetening agent, and/or slag former reaches together.
The reducing gas physical efficiency that takes place in the shaft furnace 11 is by containing a kind of suitable sweetening agent or by adding sweetening agent in the gasification zone or deliver to the filter 22 of a separate sulfur via the gas that vent pipe 18 produces in shaft furnace in the shaft furnace charging, and desulfurization.The metal oxide that the inclusion of more any S will be reduced in the reduction shaft furnace bottom absorbs.Reducing gas generally remains in the temperature range between 1000-1500 ℃.Yet a kind of like this thermal reduction gas can not be directly used in the reduction in the reduction shaft furnace, so its temperature must reduce before it sends into shaft furnace 1 widely.This point can reach with the whole bag of tricks in the scope of the invention.
For example, the reducing gas of discharging from gas generation shaft furnace 11 via pipe 18 can mix mutually with the part air-flow from the suitable recycle gas of shaft furnace 1.For the temperature that makes gaseous mixture between 700 and 1000 ℃, reach this point via pipe 14.Use another kind of method, this with the mixing energy of the part air-flow that comes from reduction shaft furnace 1 circulation after it is by filter sulphur device 22, promptly reach by reducing gas is mixed on 3 the road from pipe 14 to pipe at it.If utilize the part air-flow that returns gas in a small amount, then be enough to reach desirable cooling to the reducing gas that takes place via branch line 14.Yet if a large amount of especially return the preparation that gas is sneaked into reducing gas, such gas preferably should be heated to suitable temperature in indicating 20 mixing section.This heating for example can be undertaken by plasma generator.
The adjusting of temperature also can be crossed pipe 21 and 19 by the gas part air communication that makes generation and also be reached through the mixing section 20 that serves as water cooler.
Necessary temperature regulation at least also can be by reaching via supply pipe 24 supply water and/or water vapor.This has also prevented the formation soot deposits.
For the carburizing potentiality of the reducing gas of controlling generation with prevent to methylate, can be via the suitable carbonaceous material of pipe 25 supplies, as methane, methyl alcohol and/or propane.
Soot deposits also can be by supplying H via pipe 26 2S and being prevented.
A valuable feature of the present invention is in order to regulate the CO in the gas that returns of reducing gas temperature 2Content can be by means of CO 2The washer dress is regulated continuously.
The generation of reducing gas also can be carried out with the step gasification of two shown in Fig. 2 in the shaft furnace 11 described above.
Gas according to the present invention provides the important techniques advantage.Gas takes place and can make cigarette ash form a kind of tractable slag, and this slag is released and do not caused under the temperature of the obstructing problem in the technology and carry out.
Hydrogen richness in the reducing gas can control to the percentage ratio that is suitable for reducing process by the adding at gas stage of growth and temperature regulation stage control water and/or oxygen.Also, best reducing process and a kind of gas generating unit that is easy to control have been reached from point of view of energy.Thereby the H in the pipe 3 2O and CO 2The control of content can be by being adjusted in pipe 14 to 18 and 23 and 3 respectively, and also have the flow in pipe 24 to carry out.
As above mentioned, about desulfurization, this effect can be by for example providing suitable material to coke beds or sending into the gas gasification zone and add gas generation shaft furnace itself to replace the separate sulfur strainer.
Fig. 2 shows a kind of alternate embodiments according to present device, and this equipment includes a two-stage gas producer to replace the single-stage producer gas generator shown in Fig. 1.This equipment is to build in addition according to the same principle of embodiment shown in Fig. 1.
Two-stage gas producer shown in Fig. 2 comprises that one is marked as vaporizer and a shaft furnace 30 that has coke feeder 31 of 29.
Vaporizer 29 is equipped with a relief outlet, and water-cooling cover 32 and one preferably are the refractory lining 33 of garden cylindricality basically.Be preferably in shaft furnace 30 around several vaporizers are housed.
Shaft furnace 30 has a lower furnace slag outlet 34 and a upper gas relief outlet 35.Block coke infeeds shaft furnace by the airtight feed device 36 at the shaft furnace top.The nozzle of vaporizer 29 is the bottoms at shaft furnace, and gas upwards passes through coke beds, and flows out from gas discharge outlet.In an illustrated embodiment, the slag relief outlet is general to vaporizer and shaft furnace.
With vaporizer together with at least one burner is installed, form by the plasma generator in the illustrated embodiment 37.This plasma body producer is connected to vaporizer via a valvegear 38.Oxygenant enters plasma generator by a supply pipe 9, or selectively infeeds the plasma generator front portion by a supply pipe 39.Oxygenant can be made up of the carrier gas by plasma generator, maybe can supply a recycle gas by pipe 15a.The turbulent gases of the heat that takes place in the plasma generator is sent to vaporizer by plasma generator nozzle 40.Carbonaceous material, preferably with powdery, by supply pipe 41 and/or by also can be used to supply selectable additive for example the blowpipe 43 of slag former join the annulus 42 that is arranged in one heart around the plasma generator.
Blowpipe 44,45 also is installed in the shaft furnace for selectively supplying with the oxygenant that replenishes, as H 2O, CO 2To utilize the physics heat of the sulphur in the gas.This also can attemperation and gas composition.
First sensing device 46 is installed in and is positioned near the vaporizer afterbody of coke feeder, and second sensing device 47 is in the gas discharge outlet 35 of shaft furnace.These are for using for temperature survey and/or gasometry.These two sensing devices can make technology controlled by the internal heat of adjusting supply and/or the material stream of supply.
Fig. 2 only shows embodiment and many other feasible solutions of a suitable two-stage gasifier in a set of equipment of implementing the inventive method.For example plasma generator can be arranged on the peripheral equipment of vaporizer tangentially, obtains an annular flow in this way in vaporizer.In addition, separate in order to help slag, vaporizer can be vertical, or vaporizer and shaft furnace can be equipped with the parting furnace slag outlet.
For the two-stage equipment for gasification shown in Fig. 2, raw material is partly to burn, and at least at the vaporizer partial gasification, the mixture that obtains thus joins in the shaft furnace that contains the bulk carbonaceous material bed.Therefore in coke beds, obtain utilizing to reduce the content of carbonic acid gas and water in the gas from the contained physics heat of vaporizer gaseous mixture.Thereby gas generating process is controlled, and the feasible gas that leaves has temperature and the composition with the subsequent technique good conformity.
Hot carrier gas from plasma generator can suitably rotatablely move and powdery in the past at the adding vaporizer, and carbonaceous material can join in the vaporizer with one heart around the mobile hot gas.The material that has in the vaporizer that rotatablely moves has guaranteed to form a flux shielding layer at the vaporizer inwall.
Yet, the invention is not restricted to the embodiment of above explanation, and can in following claim scope, change in a lot of modes.For example, can the external heat supply gas that replenish take place by preheated oxidant.
Figure 85101039_IMG1

Claims (37)

1, a kind of reduction-oxidation material and being suitable for simultaneously reclaims the method for the gas of heat energy, comprises
A, a kind of reducing gas that mainly contains carbon monoxide and hydrogen of preparation from carbon containing and/or hydrocarbon-containing feedstock, wherein said raw material is with a kind of oxygenant, also have optional a kind of slag former to send into together in gasification zone or the vaporizer, simultaneously at least by a plasma generator supply heat energy;
B makes the reducing gas that makes like this reach the temperature that is suitable for follow-up reducing process, said gas is sent into contained in the shaft furnace of wanting the reductive oxidation material then, makes said gas flow to the said reductive material of wanting with adverse current;
C separates whole water and powder basically and sits the shape particle from reducing gas, said reducing gas partly consumes its reducing power and contains oxydised component, preferably carbonic acid gas and water and powdery particle behind the reduction-oxidation material;
D in order to reclaim heat energy, discharges the part air-flow that returns gas handled like this at least and the rest parts air-flow is turned back in the technology and go from system.
2, according to the process of claim 1 wherein in order to reclaim heat energy or as synthesis gas, for joining the part air-flow that returns gas that goes in the shaft furnace to make by discharging in the system.
3, form by oxygen and/or water and/or air and/or recycle gas as the oxygenant of producer gas generator according to the process of claim 1 wherein, all or part ofly be supplied in the reaction zone by plasma generator.
4, according to the method for claim 3, the wherein said oxygenant of supplying with by plasma generator was preheated in the past entering plasma generator.
5, according to each method of claim 1 to 4, the carbon containing and/or the hydrocarbon-containing feedstock that wherein are used to take place reducing gas are powdery and/or aqueous and/or piece material shape.
6, according to each method of claim 1 to 5, wherein the combustion zone forms in the shaft furnace bottom of filling blocks of solid carbonaceous material.
7, according to the method for claim 6, wherein coke is used as carbonaceous charge in the shaft furnace.
8, according to each method of claim 1 to 7, the part air-flow of the reducing gas after wherein water or part consume joins in the shaft furnace that block reduction material is housed, above the combustion zone and from the combustion zone suitably distance make H to utilize the heat in the shaft furnace charging 2O changes into H 2+ CO and carbonic acid gas change into carbon monoxide.
9, according to each method of claim 1 to 8, wherein powdery carbonaceous material and/or slag former, with optional sweetening agent, by means of water or steam, or the carrier gas of being made up of the part air-flow of the reducing gas after the said part consumption or oxygen or the air of discharging from reduction shaft furnace joins in the device in plasma generator right on.
10, according to each method of claim 1 to 9, the optional supplemental oxidant of reducing gas wherein takes place and also have in the reaction zone before optional slag former and/or sweetening agent join plasma generator.
11, according to each method of claim 1 to 10, wherein the mixture of carbon containing bulk material and suitable sweetening agent is used as the shaft furnace charging of top, combustion zone.
12, according to each method of claim 1 to 11, the wherein reducing gas of Fa Shenging desulfurization before adding the reaction shaft furnace.
13, according to each method of claim 1 to 12, wherein the temperature value of the reducing gas of Fa Shenging remains in the temperature range between 1000-1500 ℃.
14, according to each method of claim 1 to 13, the temperature that reducing gas wherein takes place is adjusted between 700-1000 ℃ adding before the reduction furnace.
15, according to the method for claim 13, wherein may after desulfurization, leave the thermal reduction gas temperature of producer gas generator
A, by mix with reducing gass that above-mentioned parts of discharging from reduction shaft furnace in a large number consumed and/or
B, by make it the cooling and/or
C is by adding big water gaging and/or water vapor
Regulated so that final gas temperature between 700-1000 ℃.
16,, wherein plan because the part air-flow of thermoregulator a large amount of recirculation shaft furnace gases heats before replenishing reducing gas according to each method of front claim.
17, according to the method for claim 16, wherein said heating is to utilize the heat exchanger on the top gas supply line to carry out.
18,, wherein, utilize a compressor to be pressurized to the desired pressure of method at least from the reducing gas part air-flow of the round-robin consumption of reduction shaft furnace according to each method of claim 1 to 17.
19, according to each method of claim 1 to 18, wherein supply with carbon support, as methane, the carburizing potentiality of the reducing gas that methyl alcohol and/or propane and control take place, and stop and methylate.
20, according to each method of claim 1 to 18, wherein supply H 2S is to stop soot deposits.
21, according to the method for claim 1 to 18, wherein reducing gas is to take place by the gasification of two steps, raw material be partly burnt and in vaporizer at least in part the gasification, the gaseous mixture that obtains thus is admitted in the shaft furnace that holds a carbon containing bulk material bed, physics heat in the mixture that is obtained by vaporizer is utilized on carbon containing bulk material bed to reduce the content of carbonic acid gas and water in the gas, pilot-gas generation technology is so that expellant gas has temperature and the composition that is suitable for subsequent process steps.
22, for implementing the method for claim 1, reduction-oxidation material and being suitable for simultaneously reclaims the whole plant of the gas of heat energy, include the reducing gas generating unit of a reaction chamber, at least one has the plasma generator of nozzle in the reaction chamber bottom, filter the shaft furnace that the sulphur device is connected with gas generating unit via one selectively, said shaft furnace contains the said reductive oxidation material of wanting, be installed in gas exhausting device on said shaft furnace top and be arranged in contiguous said gas exhausting device and prepare and remove the water that wherein contains and a separator of powdery particle from the air-flow of deriving, with an auxiliary gas exhausting device that is suitable for reclaiming the discharge gas of heat energy, and for a part airflow circulation making said air-flow at least to gas generating unit and/or for to the temperature controlled main supply line of the reducing gas that produces in the gas generating unit.
23, according to the equipment of claim 22, wherein the assist gas relief outlet is installed on the pipeline between gas generating unit and the shaft furnace.
24, according to the equipment of claim 22, wherein main supply line is equipped with a compressor set at least.
25, according to each equipment of claim 22-24, wherein said main supply line is connected to the top that shaft furnace takes place via first branch line.
26, according to each method of claim 22 to 25, wherein main supply line is connected to the reaction zone of gas generation shaft furnace bottom via a branch line.
27, according to each equipment of claim 22 to 26, wherein main supply line is connected to the inlet that plasma body takes place via branch's pipe.
28, according to each equipment of claim 22 to 27, wherein plasma generator is connected on the oxygenant supply line so that this oxygenant is direct, and selectively preheating is led to reaction zone through plasma generator.
29, according to each equipment of claim 22 to 28, wherein gas generation shaft furnace is equipped with a slag discharger.
30, according to each equipment of claim 22 to 27, wherein gas generation shaft furnace accommodates the block charging of carbon containing, randomly contains sweetening agent.
31, according to each equipment of claim 22 to 30, wherein the gas supply line between gas generation shaft furnace and the filter sulphur device can connect the part air-flow that returns gas via a pipe.
32, according to each equipment of claim 22 to 31, wherein the reducing gas line between sulphur separator and the said reduction shaft furnace gas inlet connects the temperature regulation part air-flow of gas via the refrigerating unit of a mixing section form.
33, by the equipment of claim 32, the heating of wherein returning gas part air-flow in the mixing section reaches by the heat exchanger that use is installed on the top gas supply line.
34, according to each equipment of claim 22 to 23, wherein water and/or water vapor supply line lead to supply line.
35, according to each equipment of claim 22 to 34, carbon support wherein, namely for methane, the supply line of propane and/or methyl alcohol leads to supply line.
36, according to each equipment of claim 22 to 35, wherein H 2The S supply line leads to supply line.
37, according to each equipment of claim 22 to 36, wherein said equipment is equipped with can be as for example discharging part of the part air-flow of fuel gas.
CN198585101039A 1983-12-02 1985-04-01 A kind of reduction-oxidation material also is suitable for reclaiming the method and the whole plant of heat energy gas simultaneously Pending CN85101039A (en)

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SE8306673A SE8306673L (en) 1983-12-02 1983-12-02 KIT AND INSTALLATION FOR REDUCING OXID-CONTAINING MATERIAL

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CN85101039A true CN85101039A (en) 1986-10-08

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CN108472585A (en) * 2015-11-05 2018-08-31 韩国机械研究院 The process gases contaminated materials eliminating equipment of regenerating unit with pollution oxidation catalyst
CN115094181A (en) * 2022-06-10 2022-09-23 中钢设备有限公司 Method and apparatus for heating DRI reducing gas using plasma

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CN112430477A (en) * 2020-11-27 2021-03-02 西安交通大学 Low-temperature plasma coal or biomass gasification system and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108472585A (en) * 2015-11-05 2018-08-31 韩国机械研究院 The process gases contaminated materials eliminating equipment of regenerating unit with pollution oxidation catalyst
CN115094181A (en) * 2022-06-10 2022-09-23 中钢设备有限公司 Method and apparatus for heating DRI reducing gas using plasma

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