CN110142279A

CN110142279A - A kind of system and method for the iron-based object harmless treatment of high sulfur content

Info

Publication number: CN110142279A
Application number: CN201910404852.XA
Authority: CN
Inventors: 沈齐晖; 高美琴
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-15
Filing date: 2019-05-15
Publication date: 2019-08-20
Anticipated expiration: 2039-05-15
Also published as: CN110142279B

Abstract

The invention discloses the system and method that the iron-based object of a kind of pair of high sulfur content carries out harmless treatment, the system comprises: continuous feeding equipment, reaction and evaporation equipment, cleaner, cooling equipment and slot class equipment, for solving deficiency present in the iron-based object dangerous waste processing of high sulfur content.The system and method according to the present invention, it can be there is no the iron oxide mixture and sulphur of spontaneous combustion risk and pollution risk under room temperature for the iron-based object harmless treatment of high sulfur content, few with system investments, environmental-friendly, the horizontal outstanding advantages high, operating cost is low of product resource utilization, the disposal technology that the iron-based object hazardous waste of high sulfur content greatly improved are horizontal.

Description

A kind of system and method for the iron-based object harmless treatment of high sulfur content

Technical field

The present invention relates to the system and method that the iron-based object of a kind of pair of high sulfur content carries out harmless treatment, more particularly to one kind Discarded desulfurizing agent innocuity disposal system and method, and the troilite suitable for field of metallurgy is smelted and sulphur slag disposal technology, Belong to dangerous waste disposal field.

Background technique

The iron-based object of high sulfur content is the mixture based on iron sulfide and active sulfur, mainly includes waste desulfurizing agent, sulfur waste Sulphur slag etc..

To H in the industries such as petrochemical industry, steel, coking institute producing coal gas₂The method dehumidification type catalytic oxidation that S is removed in depth Outside, there are also active oxidation iron processes.When desulfurizing agent used in active oxidation iron processes is close to or up to its saturation Sulfur capacity, that is, need to regenerate Until replacement.Waste desulfurizing agent belongs to nonspecific industry hazardous waste, and dangerous waste code is HW06, and what is generated in Wet Catalytic Oxidation Method contains The dangerous waste code of sulphur residue and desulfurization waste liquor is HW11.

The waste desulfurizing agent typical characteristics of active oxidation iron processes are the column particle of diameter 4-5mm, length about 25mm, natural Bulk density is about 1.06 × 10³kg/m³, chemical component is mainly the ingredients such as CaO, Fe, S, it specifically refers to shown in table 1:

The chemical component of 1. waste desulfurizing agent of table forms

Wherein, Fe, S are mainly with FeS, Fe₂S₃, the forms such as simple substance S exist, there is also a small amount of organic sulfurs.Waste desulfurizing agent is in sky Spontaneous combustion can occur in gas and should not store long.SO is generated when slowly aoxidizing and burn₂And Fe₂O₃, it reacts as follows:

4FeS+7O₂=2Fe₂O₃+4SO₂↑

Fe₂S₃+3/2O₂=Fe₂O₃+3S↑

S+O₂=SO₂↑

The reaction heat of generation also causes solid sulphur simple substance particle in waste desulfurizing agent to volatilize with sulphur vapor form.

Currently, for the treatment measures of the sulfur-containing slag generated in such waste desulfurizing agent and Wet Catalytic Oxidation Method, in addition to It banks up outside buried, burning, also common there are two types of resource utilization modes: (1) mixing burning with troilite, will wherein element sulphur conversion give birth to Produce sulfuric acid；(2) pelletizing recycling wherein ferro element is sintered to iron ore blending, sintering equipment handling situations deteriorate when mixing burning, burn Contained element sulphur almost all is converted into SO during knot₂It is mixed into sintering flue gas and shifts subsequent disposition.

Both Land use systems are all that will convert the raw material of the big device of waste desulfurizing agent incorporation industry in contained element sulphur SO₂It is handled, dangerous waste transhipment high to the big device degree of dependence of industry is apart from remote, storing restrictive condition is more, element sulphur utilizes way Diameter is single.

Troilite main component is FeS₂, can slowly be aoxidized as time goes by when banking up, to atmosphere and Zinc fractions compared with Serious pollution.Thus domestic troilite is used to produce sulfuric acid and iron oxide mostly.Equally exist above-mentioned deficiency.

So far, it there is no the iron-based object innoxious process for treating of high sulfur content of small, at low cost, the essential environmental protection of process essence.

Summary of the invention

In view of this, the present invention is intended to provide a kind of system and method for the iron-based object harmless treatment of high sulfur content, is used for Above-mentioned deficiency present in high sulfur content iron-based object dangerous waste processing is solved, according to the present invention the system and method, it can will be high The iron-based object harmless treatment of sulfur content is not have the iron oxide mixture and sulphur of spontaneous combustion risk and pollution risk under room temperature, is had Few, environmental-friendly, product resource utilization level is high, operating cost the is low outstanding advantages of system investments, greatly improved height and contain The disposal technology of the iron-based object hazardous waste of sulfur content is horizontal.

The present invention provides a kind of iron-based object innocuity disposal systems of high sulfur content comprising: continuous feeding equipment, reaction With evaporation equipment, cleaner, cooling equipment and slot class equipment:

Wherein,

The continuous feeding equipment includes feed intake hopper 1, pusher 2 and air-blaster 4；The hopper 1 that feeds intake Lower end is connected with pusher 2, and iron sulfenyl raw material A is fallen into pusher 2 due to gravity；The pusher 2 is by the iron Sulfenyl raw material A is continuously introduced into the entrance of the reaction and evaporation equipment 3；Air B is sent into the reaction by the air-blaster 4 With evaporation equipment 3；

The reaction flows to horizontal low dip according to solid material in equipment with evaporation equipment and is arranged, and vertical gas goes out Mouth is connected with the gas feed of cleaner, and hot solids outlet is connected with the scum cooler 5 that central coaxial is installed；It is described anti- The initial condition reacted and start to carry out should be provided with evaporation equipment 3 with having heaters；

The cleaner is deduster 10, and dedusting ash outlet is connected vertically with the scum cooler 5, and gas goes out Mouth is docked with sulfur condenser 9；

The cooling equipment includes scum cooler 5 and sulfur condenser 9；Solid material and shifting in the scum cooler 5 Thermal medium indirect heat exchange, solid material import have at two: at one with it is described react with 3 hot solids material outlet of evaporation equipment in The heart is coaxially connected, exports with 10 dedusting ash of deduster at one and is connected vertically, the solid matter outlet of scum cooler 5 with quench Cold water sealing groove 6 is connected；Deliming hot gas and thermal medium indirect heat exchange is moved in the sulfur condenser 9, contained sulphur steams in hot gas Vapour is condensed into after sulphur drop and is discharged into sulphur liquid seal trough 8 by the interface of device bottom, and sulfur condenser 9 is discharged gas and contains SO₂, will It is described to contain SO₂Flue gas is sent into the consumption of other devices or is discharged after cleaning desulfurization on the spot；

The slot class equipment includes sulphur liquid seal trough 8, quenching water sealed tank 6 and wet feed hopper 7；The sulphur liquid seal trough 8 and quenching Water sealed tank 6 all has the function of fluid-tight, keeps in the liquid of specific level in the equal insertion groove of the feed pipe of the two；Sulphur liquid seal trough 8 will The molten sulfur C equivalent discharge that sulfur condenser comes；The quenching water sealed tank 6 is furnished with solid material conveying facility, and hot solids material is quenched The wet feed hopper 7 is transferred to after cold wetting.

The iron-based object innocuity disposal system of the high sulfur content according to the present invention, wherein the pusher 2 is selected from rotation One of sealing valve, screw(-type) feeder or electric hydaulic plunger.

The iron-based object innocuity disposal system of the high sulfur content according to the present invention, wherein the reaction and 3 institute of evaporation equipment The heater of band is by electric heater or the heat supply in a manner of heating medium collet.

The iron-based object innocuity disposal system of the high sulfur content according to the present invention, wherein the deduster 10 is removed selected from gravity One of dirt device or electric precipitator.

The iron-based object innocuity disposal system of the high sulfur content according to the present invention, wherein the sulfur condenser 9 is according to equipment Interior deliming hot gas stream is to horizontal low dip or is vertically arranged.

The iron-based object innocuity disposal system of the high sulfur content according to the present invention, wherein the shifting thermal medium can be according to this hair The external public auxiliary condition of bright system is selected from one or more of normal temperature air B, boiler water supply D, recirculated cooling water or conduction oil.

Further, the shifting thermal medium can open a way use in the component devices of the system, can also be described The step that is together in series between the component devices of system uses.

The iron-based object innocuity disposal system of the high sulfur content according to the present invention, wherein the quenching water sealed tank 6 is also equipped with Solid material conveying machinery.

Further, the solid material conveying machinery is selected from one of chain mat machine, grab bucket or rotary seal valve.

The iron-based object innocuity disposal system of the high sulfur content according to the present invention, wherein continuous feeding equipment further includes circulation Gas aspirator 11.

Further, the recyclegas aspirator 11 is selected from one of air blower or Venturi tube.

On the other hand, it the present invention also provides a kind of method of the iron-based object harmless treatment of high sulfur content, uses above-mentioned System carries out the iron-based object harmless treatment of high sulfur content, which comprises

1) the iron-based raw material A of high sulfur content, oxygen and inert gas are continuously added in continuous feeding equipment；

2) above-mentioned three kinds of substances react with mixed in evaporation equipment 3 after aoxidize, the energy discharged persistently provides Driving force needed for raw material decomposes, evaporation, elemental sulfur that is raw material is own and generating are evaporated to sulphur steam；Wherein oxygen-supplying amount is low In " raw material being generated ferriferous oxide and SO completely₂Required oxygen-supplying amount ", between " generating needed for ferriferous oxide and supply completely by raw material Oxygen amount " to " generating ferriferous oxide and SO completely₂Between required oxygen-supplying amount "；It is controlled by adjusting amount of inert gas and oxygen-supplying amount The temperature of reaction product system；The gas-solid mixture of the heat of generation constantly moves forward, and discharge is described to react and evaporation equipment 3；

3) the gas object system in the gas-solid mixture of the heat is dusted in deduster 10；

4) the continuously gas object system after indirect cooling and dedusting of condenser 9, institute's sulfur-bearing steam in gas object system is carried out cold Solidifying cooling；And continuously discharge contains SO₂Inert gas；

5) the solids system that includes dedusting ash and directly cooling, iron oxide mixture are continuously discharged in reaction product system Solid output object transport and store in a moistened state.

Further, the specific steps of the method are as follows:

S1. iron sulfenyl raw material A is from the hopper 1 that feeds intake because gravity is fallen into pusher 2, and pusher 2 is by the iron sulfenyl Raw material A is continuously introduced into the arrival end of reaction and evaporation equipment 3 and in the fine and close bed of material of its arrival end one section of room temperature of formation and at this Position remains；As the reciprocal pusher of pusher 2 acts, fine and close bed of material Forward；Air B is sent by air-blaster 4 Reaction and evaporation equipment 3；

S2. the fine and close bed of material for entering reaction with evaporation equipment 3, when advancing past the air blowpipe for being located at this equipment front, I.e. by blowpipe itself and its air-flow being blown out institute's fragmentation and dispersion；When the loose bed of material and air B are contacted, oxidation and spontaneous combustion occurs； The elemental sulfur that raw material is had by oneself and generated is evaporated to sulphur steam by the reaction heat released；For by iron sulfide it is fully oxidized be iron Oxide, air capacity is added must be slightly larger than oxygen-supplying amount needed for generating ferriferous oxide；Superfluous oxygen and elemental sulfur steam reaction Generate SO₂, also release heat；The gas-solid mixture of heat constantly moves forward, and discharge is described to react and evaporation equipment 3；Gas and solid Deduster 10 is discharged by vertical gas vent respectively, hot solids are discharged into scum cooler 5；

S3. entered after deduster 10 removes solid flying dust by the reaction with the gas that evaporation equipment 3 is discharged and enter back into institute State sulfur condenser 9；

S4. 100~270 DEG C are cooled to after deliming hot gas and shifting thermal medium indirect heat exchange, sulphur in the deliming hot gas Sulphur steam is condensed into sulphur drop simultaneously, and sulphur drop is discharged into after sulphur liquid seal trough 8 by the interface of 9 bottom of sulfur condenser with molten sulfur state This system is discharged；The gas of sulphur removal drop is gone to be sent into the consumption of other devices or discharge after cleaning desulfurization on the spot；

S5. the solid flying dust that deduster 10 is discharged is discharged into scum cooling by the interface being connected vertically with scum cooler 5 Device 5；The solid material that scum cooler 5 is discharged falls into quenching water sealed tank 6；The quenching water sealed tank 6 by hot solids material quenching, The water continuous supplementation of evaporation loss in slot, while making solid material particle that loose hole be kept to be easy to soak.

The method of the iron-based object harmless treatment of high sulfur content according to the present invention, S1-S5 is in lower absolute pressure pressure Lower progress, range is between 0.01~0.2MPa.

Preferably, the absolute pressure pressure is 0.05~0.15MPa.

The method of the iron-based object harmless treatment of high sulfur content according to the present invention, air additional amount and the addition of S1 Solid material amount and composition are related, can be by those skilled in the art's root depending on disposition product to the remaining permissible value of iron sulfide It is determined according to concrete condition.

Preferably, S1 further include: the sulphur that the air-blaster 4 aspirates air B and recyclegas aspirator 11 condenses After the partial fume mixing that device 9 is discharged, it is re-fed into reaction and evaporation equipment 3.

The method of the iron-based object harmless treatment of high sulfur content according to the present invention, in reaction and evaporation equipment in S2 Generated reaction heat makes the bed of material be rapidly reached reaction temperature T by room temperature in 3, wherein 100 DEG C < T < 1200 DEG C.

Preferably, 140 DEG C < T < 445 DEG C.

It is highly preferred that 240 DEG C < T < 350 DEG C.

The method of the iron-based object harmless treatment of high sulfur content according to the present invention is discharged the reaction and is steamed in S3 The gas of hair equipment 3 contains solid flying dust, sulphur steam, SO₂, remaining is N₂、CO₂Deng without reactive inert gas.

The method of the iron-based object harmless treatment of high sulfur content according to the present invention, S4 further include: condensed from the sulphur The flue gas partial that device 9 is discharged is drawn into system front end by recyclegas aspirator 11 and mixes with air B, remaining flue gas is sent into other It is discharged after device consumption or on the spot clean desulfurization.

The method of the iron-based object harmless treatment of high sulfur content according to the present invention, the deliming hot gas described in S4 with 132~150 DEG C are preferably cooled to after moving thermal medium indirect heat exchange.

The method of the iron-based object harmless treatment of high sulfur content according to the present invention, removes sulphur removal drop described in S4 Gas contains SO₂、N₂、CO₂Equal compositions.

Compared with the prior art, the iron-based object innocuity disposal system of high sulfur content of the present invention and method have following excellent Point: the iron-based object innocuity disposal system running temperature of high sulfur content of the present invention is substantially reduced, SO₂Yield is greatly decreased, Closed continuous disposal options avoid flue dust loss, solid output object wetting transhipment and storage, realize the essence of disposal process Cleaning；Produced sulphur convenient for storing and it is widely used；The storing essential safety of solid output object and sulphur；The object of system can disappear Consumption and manual work intensity are substantially reduced；Technique is brief.The iron-based object innocuity disposal system of high sulfur content of the present invention and side The resource utilization that method greatly improves the iron-based object of the high sulfur contents such as waste desulfurizing agent, troilite, sulfur waste slag is horizontal, has pole High economic value and the value of environmental protection.

Detailed description of the invention

Fig. 1 is the system flow chart of the embodiment of the present invention 1~2.

Fig. 2 is the system flow chart of the embodiment of the present invention 3~5.

The symbol description of capital equipment, component and medium:

Feed intake hopper 1, pusher 2, reaction and evaporation equipment 3, air-blaster 4, scum cooler 5, quenching water seal Slot 6, wet feed hopper 7, sulphur liquid seal trough 8, sulfur condenser 9, deduster 10, recyclegas aspirator 11.

Iron sulfenyl raw material A, air B, Molten sulphur C, boiler water supply D contain SO₂Flue gas E, steam F, interior circulating flue gas G.

Specific embodiment

Below in conjunction with specific embodiment and embodiment, it is specifically described the present invention, advantages of the present invention and various effects It thus will clearly present.It will be understood by those skilled in the art that these specific embodiments and embodiment are for illustrating The present invention is not intended to limit the present invention.

Throughout the specification, unless otherwise specified, terms used herein are interpreted as usual in this field Used meaning.Therefore, unless otherwise defined, all technical and scientific terms used herein has leads with belonging to the present invention The identical meaning of the general understanding of field technique personnel.Contradiction if it exists, this specification are preferential.

Unless otherwise specified, various raw material, reagent, the instrument and equipment etc. used in the present invention, can pass through Market is commercially available or can be prepared by existing method.

Wherein,

The cleaner is deduster 10, and dedusting ash outlet is connected vertically with the scum cooler 5, and gas goes out Mouth is docked with sulfur condenser 9.

The iron-based object innocuity disposal system of the high sulfur content according to the present invention, the recyclegas aspirator 11 is according to original In material iron sulfur content height, can not use or using different conveying capacitys aspirator；In general, high activity sulfur content Raw material is easy to the evaporation of sulphur using the aspirator of big flow to reduce the surface vapor partial pressure of sulphur when reacting raw material, corresponding to drop Low reaction temperature.

The iron-based object innocuity disposal system of the high sulfur content according to the present invention, wherein it is described reaction with evaporation equipment 3 according to Horizontal low dip setting is flowed to according to solid material in equipment, when the downward low dip of the equipment level, using self gravity gram Take partial movement frictional force；When the upward low dip of the equipment level, it can be provided using pusher and overcome all itself weights The power of power and mobile frictional force.

The iron-based object innocuity disposal system of the high sulfur content according to the present invention, wherein the deduster 10 is by the reaction The gas being discharged with evaporation equipment 3 removes the flying dust of deentrainment herein, and dedusting ash outlet is connected vertically with scum cooler 5, deliming Hot gas be sent into sulfur condenser 9, the deduster 10 be selected from one of gravitational precipitator or electric precipitator.

The iron-based object innocuity disposal system of the high sulfur content according to the present invention, wherein scum is cooling in the cooling equipment Moved used in device and sulfur condenser thermal medium can the external public auxiliary condition of system according to the present invention use normal temperature air B, pot One or more of furnace water supply D, recirculated cooling water or conduction oil.The shifting thermal medium can be in the component devices of the system Middle open circuit uses, such as: boiler water supply is sent into sulfur condenser and generates steam or hot water；Etc..Moving thermal medium can also be in the system The step that is together in series between the component devices of system uses, and such as: normal temperature air is sent after scum cooler and/or sulfur condenser are heated Enter reaction and evaporation equipment；Boiler water supply is sent into sulfur condenser after the heating of scum cooler；Etc..

The iron-based object innocuity disposal system of the high sulfur content according to the present invention, wherein the quenching water sealed tank 6 is by thermosetting Body material quenching makes solid material keep loose and is easy to soak, the water that continuous supplementation quenching evaporates in slot, the quenching water sealed tank 6 are also equipped with solid material conveying machinery.

Further, the solid material conveying machinery is selected from one of chain mat machine, grab bucket or rotary seal valve, will moisten Wet stock is transferred to wet feed hopper 7, and transfer process does not have fugitive dust.

In the component devices of the iron-based object innocuity disposal system of high sulfur content of the present invention, in addition to continuous feeding equipment In feed intake except hopper, pusher and air-blaster and quenching water sealed tank and wet feed hopper in slot class equipment, remaining The measure for thering is heat preservation to be insulated.

Further, the recyclegas aspirator 11 is selected from one of air blower or Venturi tube, aspirates sulfur condenser The partial fume of discharge is mixed into the air that air-blaster is sent.

The iron-based object innocuity disposal system of the high sulfur content according to the present invention, component devices/component/shifting thermal medium are equal Several integrated parts/devices or a set of integrated can be combined into according to medium flow direction sequence and the mode of process function docking Change equipment.The combination and modification carried out accordingly should be understood as within the scope of this application content and its equivalent technologies.

The present invention also provides a kind of methods of the iron-based object harmless treatment of high sulfur content, use above system to carry out high The iron-based object harmless treatment of sulfur content, which comprises

2) above-mentioned three kinds of substances react with mixed in evaporation equipment 3 after aoxidize, the energy discharged persistently provides Driving force needed for raw material decomposes, evaporation.Wherein oxygen-supplying amount " is lower than raw material generating ferriferous oxide and SO completely₂Required confession Oxygen amount "；Depending on disposition product to the remaining permissible value of iron sulfide, " confession needed for raw material is generated ferriferous oxide completely can be lower than Oxygen amount "；" oxygen-supplying amount needed for raw material is generated ferriferous oxide completely " is typically in the range of to " generation ferriferous oxide and SO completely₂It is required Between oxygen-supplying amount ".The elemental sulfur that oxidation heat liberation keeps raw material own and generates is evaporated to sulphur steam；For by the abundant oxygen of iron sulfide Ferriferous oxide is turned to, air capacity is added must be slightly larger than oxygen-supplying amount needed for generating ferriferous oxide；Superfluous oxygen and elemental sulfur steams Vapour reaction generates SO₂, also release heat；The temperature of reaction product system is controlled to adjust amount of inert gas and oxygen-supplying amount； The gas-solid mixture of the heat of generation constantly moves forward, and discharge is described to react and evaporation equipment 3；

Further, the specific steps of the method are as follows:

S2. the fine and close bed of material for entering reaction with evaporation equipment 3 advances past and is located at the reaction and 3 front of evaporation equipment Air blowpipe when, i.e., by blowpipe itself and its air-flow being blown out institute's fragmentation and dispersion；When the loose bed of material and air B are contacted, Oxidation and spontaneous combustion occurs；The elemental sulfur that raw material is had by oneself and generated is evaporated to sulphur steam by the reaction heat released；For iron is vulcanized Fully oxidized object is ferriferous oxide, and air capacity is added must be slightly larger than oxygen-supplying amount needed for generating ferriferous oxide；Superfluous oxygen with Elemental sulfur steam reaction generates SO₂, also release heat；Heat gas-solid mixture constantly move forward discharge it is described react set with evaporation Standby 3；Gas with solid is discharged into deduster 10 by vertical gas vent respectively, hot solids are discharged into scum cooler 5；

S4. 100~270 DEG C are cooled to after moving thermal medium indirect heat exchange with deliming hot gas, sulphur in the deliming hot gas Sulphur steam is condensed into sulphur drop simultaneously, and sulphur drop is discharged into after sulphur liquid seal trough 8 by the interface of 9 bottom of sulfur condenser with molten sulfur state This system is discharged；The gas of sulphur removal drop is gone to be sent into the consumption of other devices or discharge after cleaning desulfurization on the spot；

Preferably, the absolute pressure pressure is 0.05~0.15MPa.

The method of the iron-based object harmless treatment of high sulfur content according to the present invention, air additional amount and the addition of S1 Solid material amount and composition are related, can be determined as the case may be by those skilled in the art, and wherein oxygen-supplying amount, which is lower than, " incites somebody to action Raw material generates ferriferous oxide and SO completely₂Required oxygen-supplying amount "；It, can be low depending on disposition product to the remaining permissible value of iron sulfide In " oxygen-supplying amount needed for raw material is generated ferriferous oxide completely "；It is typically in the range of and " raw material is generated completely needed for ferriferous oxide and is supplied Oxygen amount " to " generating ferriferous oxide and SO completely₂Between required oxygen-supplying amount ".

Inert gas is added in the iron-based object oxidation reaction of high sulfur content, reduces the temperature of reaction product system；Simultaneously The partial pressure for reducing sulphur steam in product gas object system is easy to sulphur and evaporates in the case where being lower than its boiling temperature.The inert gas Refer to N₂、CO₂Deng without reactive gas.

The method of the iron-based object harmless treatment of high sulfur content according to the present invention, when the reaction is arranged with evaporation equipment When the temperature departure of reaction product system out controls temperature range, reaction is controlled by adjusting amount of inert gas and oxygen-supplying amount The temperature T of product system improves the adaptability to raw material composition.

Specifically, it is rapidly reached the bed of material instead by room temperature in reaction and generated reaction heat in evaporation equipment 3 in S2 Temperature T is answered, wherein 100 DEG C < T < 1200 DEG C.

Preferably, 140 DEG C < T < 445 DEG C.

It is highly preferred that 240 DEG C < T < 350 DEG C.

The method of the iron-based object harmless treatment of high sulfur content according to the present invention, is discharged the reaction and evaporation equipment 3 gas, which enters after deduster 10 removes solid flying dust, enters back into the sulfur condenser 9, and before the condensation of sulphur steam is cooling, setting is removed Dirt equipment is dusted product gas object system, to reduce the pollution to molten sulfur product.The reaction is discharged in S3 and steams The gas of hair equipment 3 contains solid flying dust, sulphur steam, SO₂, remaining be N₂、CO₂Deng without reactive inert gas.

The method of the iron-based object harmless treatment of high sulfur content according to the present invention, the discharge of the deduster 10 described in S4 Deliming hot gas and move thermal medium (boiler water supply D) indirect heat exchange after be preferably cooled to 132~150 DEG C.

The method of the iron-based object harmless treatment of high sulfur content according to the present invention, removes sulphur removal drop described in S4 Gas contains SO₂、N₂、CO₂Equal compositions.Sulphur steam is condensed into sulphur drop simultaneously in the deliming hot gas；Remove sulphur removal drop Gas contains SO₂、N₂、CO₂Equal compositions, contain SO₂This system is discharged in flue gas E.

The method of the iron-based object harmless treatment of high sulfur content according to the present invention, what deduster 10 was discharged in S5 consolidates Body flying dust is discharged into scum cooler 5 by the interface being connected vertically with scum cooler 5；The heat that reaction is discharged with evaporation equipment 3 While solid is cooling in scum cooler 5, contraction of gas in the pore structure of solid is arranged deduster 10 by gravity Solid flying dust out also generates absorption and gathers effect；The solid material that scum cooler 5 is discharged falls into quenching water sealed tank 6.

The method of the iron-based object harmless treatment of high sulfur content according to the present invention, large disposition product is under room temperature There is no the iron oxide mixture and sulphur of spontaneous combustion risk and pollution risk；A small amount of disposition product is containing SO₂Flue gas.

The method of the iron-based object harmless treatment of high sulfur content according to the present invention, the quenching water sealed tank 6 is by thermosetting Body material quenching, the water continuous supplementation of evaporation loss in slot, while making solid material particle that loose hole be kept to be easy to soak, it quenches Cold water sealing groove is also equipped with solid material conveying machinery such as: chain mat machine, grab bucket, rotary seal valve, wetting material is transferred to wet Expect hopper, transfer process does not have fugitive dust.

It is to sum up told, the main feature of the system and method for the iron-based object harmless treatment of high sulfur content of the present invention exists In: the driving forces such as reaction, evaporation needed for 1) providing system operation by the energy that material autoxidation is discharged；And it can by-product Steam or hot water；2) by the raw air inert gas brought in and the inert gas of interior circulation, make the differential pressure drop of sulphur steam Low, system operating temperatures are between the sublimation temperature and vapourizing temperature of sulphur；3) by adjusting the air capacity and lazy being added The air quantity of property gas carrys out control system operating temperature；Improve the adaptability to raw material composition variation；4) system is because of feed end The liquid seal structure of the fine and close bed of material and discharge end maintains whole tightness；5) cleaner set by reduces to molten sulfur The pollution of product；6) pusher for solid material charging only needs to provide solid material by overcoming frictional force needed for system Acting；7) continuously charging and discharging, avoids the loss to environment, also makes the energy consumption of system and manual work intensity obvious It reduces；8) solid output object wetting transhipment and storage, avoid fugitive dust；9) equipment/component is conventional, process essence is small, technique simplifies.

Embodiment 1

The system for present embodiments providing the harmless treatment of the iron-based object-waste desulfurizing agent of a kind of pair of high sulfur content, packet It includes: continuous feeding equipment, reaction and evaporation equipment, cleaner, cooling equipment and slot class equipment, as shown in Figure 1.

The continuous feeding equipment includes feed intake hopper 1, pusher 2 and air-blaster 4；The hopper 1 that feeds intake Lower end is connected with the pusher 2, and iron sulfenyl raw material A is due in gravity the is fallen into pusher 2；The pusher 2 Iron sulfenyl raw material A is continuously introduced into the arrival end of the reaction and evaporation equipment 3 and forms one section of fine and close bed of material in its arrival end； The air-blaster 4 is re-fed into the reaction and 3 entrance of evaporation equipment after heating air B by the scum cooler 5 On rear side of the fine and close bed of material at end.

The reaction is added and is evaporated with the iron sulfenyl raw material A of evaporation equipment 3 in this equipment internal oxidition, and by the iron oxygen of generation Compound, sulphur steam and contain SO₂The mixture of gas is discharged；The reaction is flowed to evaporation equipment 3 according to solid material in equipment The setting of horizontal low dip, hot solids outlet are docked with the scum cooler 5 that central coaxial is installed, vertical gas vent and The gas feed of deduster 10 is connected；The reaction provides the initial reacted and start to carry out with evaporation equipment 3 with having heaters Condition.

The cleaner is deduster 10, and dedusting ash outlet is connected vertically with the scum cooler 5, and gas goes out Mouth is docked with the sulfur condenser 9, and the gas that the reaction is discharged with evaporation equipment 3 removes the flying dust of deentrainment herein.

The cooling equipment includes scum cooler 5 and sulfur condenser 9；Solid material and sky in the scum cooler 5 Gas B indirect heat exchange, solid material import have at two: reacting and 3 hot solids material outlet center of evaporation equipment at one with described It is coaxial to be connected, export at one with the dedusting ash of the deduster 10 and be connected vertically, the solid matter outlet of the scum cooler 5 It is connected with quenching water sealed tank 6；The sulfur condenser 9 to horizontal low dip or is vertically arranged according to deliming hot gas stream in equipment, This system is discharged in the boiler water supply D indirect heat exchange supplied outside deliming hot gas and system, and contained sulphur steam is cold in hot gas It congeals into and the sulphur liquid seal trough 8 is discharged by the interface of device bottom after sulphur drop, contain SO₂This system is discharged in flue gas E；The sulphur is cold Boiler water supply D is heated generation steam F and this system is discharged by condenser 9.

The slot class equipment includes sulphur liquid seal trough 8, quenching water sealed tank 6 and wet feed hopper 7；The sulphur liquid seal trough 8 and quenching Water sealed tank 6 all has the function of fluid-tight, keeps in the liquid of specific level in the equal insertion groove of the feed pipe of the two；The sulphur liquid seal trough This system is discharged in molten sulfur C by 8；The quenching water sealed tank 6 is furnished with solid material conveying facility, after the wetting of hot solids material quenching It is transferred to the wet feed hopper 7.

In above-mentioned system, the pusher 2 is electric hydaulic plunger.

With evaporation equipment 3 with having heaters, appended heater is electric heater for the reaction.

The deduster 10 is gravitational precipitator.

The solid material conveying machinery that the quenching water sealed tank 6 is furnished with is chain mat machine.

Embodiment 2

The present embodiment carries out harmless treatment to waste desulfurizing agent using the system of embodiment 1.The waste desulfurizing agent processing is negative Lotus is 1t/h, by weight percentage, consisting of: Fe₂O₃21.57%, S 28.46%, remaining for non-oxidizable Ca, The oxide of Mg, Al, k, Na.

By above-mentioned waste desulfurizing agent since gravity is fallen into the pusher 2 from the hopper 1 that feeds intake；The pusher The waste desulfurizing agent is continuously introduced into the arrival end of the reaction and evaporation equipment 3 and forms a Duan Changwen in its arrival end by structure 2 The fine and close bed of material and remain in the position；As the reciprocal pusher of pusher acts, fine and close bed of material Forward；The air Air blower 4 is re-fed into the reaction and evaporation equipment 3, the flow of air B after heating air B by the scum cooler 5 Slightly larger than the correspondence air capacity of oxygen-supplying amount needed for iron sulfenyl raw material A is generated ferriferous oxide completely；

Into the fine and close bed of material of the reaction and evaporation equipment 3, when advancing past the air blowpipe for being located at this equipment front, I.e. by blowpipe itself and its air-flow being blown out institute's fragmentation and dispersion；When the loose bed of material and air contact, oxidation and spontaneous combustion occurs；Institute The elemental sulfur that raw material is had by oneself and generated is evaporated to sulphur steam by the reaction heat of releasing；Fully oxidized iron sulfide is ferriferous oxide Afterwards, superfluous oxygen and elemental sulfur steam reaction generate SO₂, also release heat；By adjusting the flow of air B, make reaction heat The bed of material is set to be rapidly reached 431 DEG C by room temperature；

When the gas-solid mixture of heat constantly moves forward the discharge reaction with evaporation equipment 3, gas solid separation；Fly containing solid Ash, sulphur steam, SO₂, remaining be N₂、CO₂The gas object system of equal inert gases is discharged into the deduster by vertical gas vent 10 removal solid flying dusts therein；Hot solids are then discharged into the scum cooler 5.The deduster uses gravitational precipitator, gas Body flow velocity is 0.2m/s.

Entered in the sulfur condenser 9 between shifting thermal medium-boiler water supply D by the hot gas that the deduster 10 is discharged 132 DEG C are cooled to after connecing heat exchange, sulphur steam is condensed into sulphur drop simultaneously in deliming hot gas；The gas of sulphur removal drop is gone to contain SO₂、N₂、CO₂Equal compositions, contain SO₂This system is discharged in flue gas E；Meanwhile in the sulfur condenser, boiler water supply D and medium gas Steam F is generated after body indirect heat exchange, and this system is discharged；Condensation obtains the interface that sulphur drop passes through its bottom in the sulfur condenser 9 It is discharged into after the sulphur liquid seal trough 8 and this system is discharged with molten sulfur C, the height liquid seal foundation of sulphur liquid seal trough and quenching water sealed tank in system Flue gas pressures 25KPa (gauge pressure) setting is discharged in system.

The solid flying dust that the deduster 10 is discharged is discharged into the scum cooler 5；The reaction is discharged with evaporation equipment 3 Hot solids it is cooling in the scum cooler 5 while, contraction of gas in the pore structure of solid, to the deduster 10 Absorption is also generated by the solid flying dust of gravity discharge and gathers effect；The solid material that the scum cooler 5 is discharged is fallen into The quenching water sealed tank 6；The quenching water sealed tank 6 soaks hot solids material quenching, the water continuous supplementation of evaporation loss in slot, And wet stock is transferred to the wet feed hopper 7 with the chain mat machine matched, transfer process does not have fugitive dust.

When waste desulfurizing agent additional amount is 1t/h, 247m is added³/ h air, this flow are slightly larger than waste desulfurizing agent raw material is complete The correspondence air capacity of oxygen-supplying amount needed for generating ferriferous oxide；Air blower by air by scum cooler heat after be sent into reaction with Evaporation equipment；With in evaporation equipment oxidation and spontaneous combustion occurs for waste desulfurizing agent and air reacting, and material layer temperature reaches 431 DEG C；It is useless de- While iron sulfide is oxidized to ferriferous oxide in sulphur agent, wherein active sulfur is also decomposed, is evaporated；The gas-solid mixture of heat is continuous Forward discharge reaction and evaporation equipment, hot gas and solid respectively enter deduster and scum cooler；393m³/ h (standard state), 431 DEG C of hot gas is after deduster removes solid flying dust, wherein sulphur steam about 48.1v%, enter back into sulfur condenser with pot 138 DEG C are cooled to after furnace water supply indirect heat exchange, the smoke exhaust system of the molten sulfur and cooling that condense.System discharge contains SO₂ The flow of flue gas is about 204m³/ h (standard state), composition are about (v%): S 0.5%, SO₂3.9%, N₂94.4%；Obtain sulphur About 271kg/h, the full sulphur content yield for raw material is about 95.1%；Sulfur condenser generates the steam about 107kg/h row of 0.4MPa This system out；Obtained ferriferous oxide sulfur-bearing is less than 0.2wt%.

Holding waste desulfurizing agent additional amount is 1t/h, and air capacity is reduced to 238m³/ h, data variation is as follows everywhere: reaction Hot gas 386m is discharged with evaporation equipment³/ h (standard state), 389 DEG C, wherein sulphur steam about 49.5v%；System discharge contains SO₂Flue gas Flow be about 195m³/ h (standard state), composition are about (v%): S 0.5%, SO₂3.1%, N₂95.2%；Obtain sulphur about 273kg/h, the full sulphur content yield for raw material is about 96.0%；Sulfur condenser generates the steam about 104kg/h discharge of 0.4MPa This system；Obtained ferriferous oxide sulfur-bearing is less than 0.2wt%.

Embodiment 3

The system for present embodiments providing the harmless treatment of the iron-based object-waste desulfurizing agent of a kind of pair of high sulfur content, packet It includes: continuous feeding equipment, reaction and evaporation equipment, cleaner, cooling equipment and slot class equipment.Compared with Example 1, it is being Recyclegas aspirator 11 is increased in the continuous feeding equipment of system, as shown in Figure 2.

The continuous feeding equipment includes feed intake hopper 1, pusher 2, air-blaster 4 and recyclegas aspirator 11；The hopper 1 that feeds intake, the function of pusher 2 and air-blaster 4 and configuration are same as Example 1；The recyclegas Aspirator 11 by the partial fume that the sulfur condenser 9 is discharged be mixed into it is that air-blaster 4 is sent, by the scum cooler In air B after 5 heating；The function and configuration of remaining reaction and evaporation equipment, cleaner, cooling equipment and slot class equipment It is all same as Example 1.

In above-mentioned system, the recyclegas aspirator 11 is Venturi tube injector, described in above-mentioned system Recyclegas aspirator can use the aspirator of different conveying capacitys according to iron sulfur content height in raw material.

Embodiment 4

The method for present embodiments providing the harmless treatment of a kind of pair of waste desulfurizing agent, for using the system of embodiment 3 The method of the progress harmless treatment of the waste desulfurizing agent, method includes the following steps:

The air-blaster 4 by air B by the scum cooler 5 heat after, with the recyclegas aspirator After the partial fume mixing that the sulfur condenser 9 of 11 suctions is discharged, it is re-fed into the reaction and evaporation equipment 3, the flow of air B omits Greater than the correspondence air capacity of oxygen-supplying amount needed for the waste desulfurizing agent is generated ferriferous oxide completely；The waste desulfurizing agent is from the throwing Since gravity is fallen into the pusher 2 in material hopper 1；Above-mentioned waste desulfurizing agent is continuously introduced into described by the pusher 2 Reaction and with the arrival end of evaporation equipment 3 and in the fine and close bed of material of its arrival end one section of room temperature of formation remain in the position； As the reciprocal pusher of pusher acts, fine and close bed of material Forward.The recyclegas aspirator uses Venturi tube injector, inhales Gas ability is 120m³/h。

Into the fine and close bed of material of the reaction and evaporation equipment 3, when advancing past the air blowpipe for being located at this equipment front, I.e. by blowpipe itself and its air-flow being blown out institute's fragmentation and dispersion；When the loose bed of material and air contact, oxidation and spontaneous combustion occurs；Institute The elemental sulfur that raw material is had by oneself and generated is evaporated to sulphur steam by the reaction heat of releasing；Fully oxidized iron sulfide is ferriferous oxide Afterwards, superfluous oxygen and elemental sulfur steam reaction generate SO₂, also release heat；By adjusting the flow of air B, make reaction heat The bed of material is set to be rapidly reached 373 DEG C by room temperature；

The hot gas being discharged by the deduster 10 enter the sulfur condenser 9 in it is cold after boiler water supply D indirect heat exchange But to 138 DEG C, sulphur steam is condensed into sulphur drop simultaneously in dielectric gas；The gas of sulphur removal drop is gone to contain SO₂、N₂、CO₂Deng Composition, the flue gas partial being discharged from the sulfur condenser 9 are drawn into system front end by recyclegas aspirator 11, remaining contains SO₂This system is discharged in flue gas E；Meanwhile in the sulfur condenser, steaming is generated after boiler water supply D and dielectric gas indirect heat exchange This system is discharged in vapour F；Condensation obtains sulphur drop and is discharged into the sulphur liquid seal trough 8 by the interface of its bottom in the sulfur condenser 9 This system is discharged with molten sulfur C afterwards.

The solid flying dust that the deduster 10 is discharged is discharged into the scum cooler 5；The reaction is discharged with evaporation equipment 3 Hot solids it is cooling in the scum cooler 5 while, contraction of gas in the pore structure of solid, to the deduster 10 Absorption is also generated by the solid flying dust of gravity discharge and gathers effect；The solid material that the scum cooler 5 is discharged is fallen into The quenching water sealed tank 6；The quenching water sealed tank 6 soaks hot solids material quenching, the water continuous supplementation of evaporation loss in slot, And wet stock is transferred to the wet feed hopper 7 with the solid material conveying machinery matched, transfer process does not have fugitive dust.

When waste desulfurizing agent additional amount is 1t/h, 247m is added³/ h air, this flow are slightly larger than waste desulfurizing agent raw material is complete The correspondence air capacity of oxygen-supplying amount needed for generating ferriferous oxide；Air blower is by air by taking out after scum cooler, with recyclegas After the partial fume mixing of the sulfur condenser discharge of haustorium suction, it is re-fed into reaction and evaporation equipment；Waste desulfurizing agent and air exist Reaction reaches 373 DEG C with oxidation and spontaneous combustion, material layer temperature occur in evaporation equipment；Iron sulfide is oxidized to iron oxygen in waste desulfurizing agent While compound, wherein active sulfur is also decomposed, is evaporated；The gas-solid mixture of heat, which constantly moves forward, is discharged reaction and evaporation equipment, heat Gas and solid respectively enter deduster and scum cooler；513m³/ h (standard state), 373 DEG C of hot gas are removed in deduster After solid flying dust, wherein sulphur steam about 36.8v%, enters back into sulfur condenser and is cooled to 150 with after boiler water supply indirect heat exchange DEG C, the smoke exhaust system of the molten sulfur and cooling that condense.Sulfur condenser discharge contains SO₂The flow of flue gas is about 324m³/h (standard state)；System discharge contains SO₂The flow of flue gas is about 204m³/ h (standard state), composition are about (v%): S 0.5%, SO₂ 3.9%, N₂94.4%；Sulphur about 271kg/h is obtained, the full sulphur content yield for raw material is about 95.2%；Sulfur condenser generates This system is discharged in the steam of 0.4MPa about 107kg/h；Obtained ferriferous oxide sulfur-bearing is less than 0.17wt%.

Embodiment 5

The method for present embodiments providing the harmless treatment of a kind of pair of sulfur-containing slag, for using the system of embodiment 3 The method of the progress harmless treatment of the sulfur-containing slag, method includes the following steps:

The air-blaster 4 by air B by the scum cooler 5 heat after, with the recyclegas aspirator After the partial fume mixing that the sulfur condenser 9 of 11 suctions is discharged, it is re-fed into the reaction and evaporation equipment 3, the flow of air B omits Greater than the correspondence air capacity of oxygen-supplying amount needed for the sulfur-containing slag A is generated ferriferous oxide completely；The sulfur-containing slag A is from described It feeds intake in hopper 1 since gravity is fallen into the pusher 2；Above-mentioned sulfur-containing slag A is continuously introduced into institute by the pusher 2 It states the arrival end of reaction and evaporation equipment 3 and forms the fine and close bed of material of one section of room temperature in its arrival end and protect always in the position It holds；As the reciprocal pusher of pusher acts, fine and close bed of material Forward.The recyclegas aspirator uses blower, air-breathing energy Power is 800m³/h。

Into the fine and close bed of material of the reaction and evaporation equipment 3, when advancing past the air blowpipe for being located at this equipment front, I.e. by blowpipe itself and its air-flow being blown out institute's fragmentation and dispersion；When the loose bed of material and air contact, oxidation and spontaneous combustion occurs；Institute The elemental sulfur that raw material is had by oneself and generated is evaporated to sulphur steam by the reaction heat of releasing；Fully oxidized iron sulfide is ferriferous oxide Afterwards, superfluous oxygen and elemental sulfur steam reaction generate SO₂, also release heat；By adjusting the flow of air B, make reaction heat The bed of material is set to be rapidly reached 270 DEG C by room temperature；

The hot gas being discharged by the deduster 10 enter the sulfur condenser 9 in it is cold after boiler water supply D indirect heat exchange But to 138 DEG C, sulphur steam is condensed into sulphur drop simultaneously in dielectric gas；The gas of sulphur removal drop is gone to contain SO₂、N₂、CO₂Deng Composition, the flue gas partial being discharged from the sulfur condenser 9 are drawn into system front end by recyclegas aspirator 11, remaining contains SO₂This system is discharged in flue gas E；Meanwhile in the sulfur condenser 9, steaming is generated after boiler water supply D and dielectric gas indirect heat exchange This system is discharged in vapour F；Condensation obtains sulphur drop and is discharged into the sulphur liquid seal trough 8 by the interface of its bottom in the sulfur condenser 9 This system is discharged with molten sulfur C afterwards.

Sulfur-containing slag A (S content about 95%, remaining be FeSO₄, ammonium salt and tar) additional amount when being 580Kg/h, is added 73.3m³/ h air, this flow is slightly larger than generates ferriferous oxide and CO for sulfur-containing slag raw material completely₂The corresponding sky of required oxygen-supplying amount Tolerance；Air is passed through the part cigarette of the sulfur condenser discharge after scum cooler, with the suction of recyclegas aspirator by air blower Gas (800m³/ h, standard state) mixing after, be re-fed into reaction and evaporation equipment；Sulfur-containing slag A and oxygen react in evaporation equipment Oxidation and spontaneous combustion occurs, material layer temperature reaches 270 DEG C；Elemental sulfur evaporates simultaneously in sulfur-containing slag A；Before the gas-solid mixture of heat is continuous Discharge reaction and evaporation equipment are moved, hot gas and solid respectively enter deduster and scum cooler；1381.5m³/ h (standard state), 270 DEG C of hot gas is after deduster removes solid flying dust, wherein sulphur steam about 26.8v%, enter back into sulfur condenser 9 with pot 138 DEG C are cooled to after furnace water supply indirect heat exchange, the smoke exhaust system of the molten sulfur and cooling that condense.The work pressure of deduster It is 14KPa (absolute pressure) by force.Sulfur condenser discharge contains SO₂The flow of flue gas is about 1011.2m³/ h (standard state)；System discharge contains SO₂ The flow of flue gas is about 211.2m³/ h (standard state), composition are about (v%): S 0.4%, SO₂72.6%, N₂26.5%, CO₂ 0.5%；Sulphur (purity 99.9%) about 528kg/h is obtained, the full sulphur content yield for raw material is about 95.8%.

As can be seen from the above-described embodiment, the method for the iron-based object harmless treatment of a kind of pair of high sulfur content provided by the invention And system, system operating temperature and SO are reduced by controlling oxygen-supplying amount₂Yield；Further by the way that inert gas is added It reduces system operating temperature and promotes the driving force of sulphur evaporation.

System and method of the present invention to the iron-based object harmless treatment of high sulfur content and common disposal options --- Burning is mixed in relieving haperacidity method or sintering process to compare, and is had a characteristic that

(1) working temperature significantly reduces, and the working temperature of relieving haperacidity is 750~950 DEG C, working temperature~1000 of sintering DEG C, reduce the requirement of equipment material；

(2) partial oxidation of element sulphur significantly reduces removed flue gas, by oxidized~1100m³/ h is down to~204m³/ H significantly reduces the flue gas consumption of subsequent linking present system or the processing capacity requirement of purification system；It reduces to specific It is big industry consumption device dependence；

(3) the resource utilization level and environmental-friendly degree of large disposition product are promoted, and brown iron oxide and sulphur are just It is utilized in storage and multipath；

(4) drivings such as reaction, evaporation needed for discharged energy provides system operation are aoxidized by material own partial Power；And it can byproduct steam；

(5) by combining the differentiation Seal Design of material properties and different parts, realization material is packed into --- it draws off Process cleans；Therefore, the present invention has few system investments, environmental-friendly, the horizontal height of product resource utilization, operating cost low Outstanding advantages.The disposal technology that the iron-based object hazardous waste of high sulfur content greatly improved in the present invention is horizontal, and can be applied to sulphur iron The resource utilization field of the iron-based object of the high sulfur contents such as mine has high economic value and the value of environmental protection.

Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as It selects embodiment and falls into all change and modification of the scope of the invention.

Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to include these modifications and variations.

Claims

1. a kind of iron-based object innocuity disposal system of high sulfur content comprising: continuous feeding equipment, reaction and evaporation equipment remove Dirt equipment, cooling equipment and slot class equipment:

Wherein,

The continuous feeding equipment includes feed intake hopper (1), pusher (2) and air-blaster (4)；The hopper that feeds intake (1) lower end is connected with pusher (2), and iron sulfenyl raw material A is fallen into pusher (2) due to gravity；The pusher (2) the iron sulfenyl raw material A is continuously introduced into the entrance of the reaction and evaporation equipment (3)；The air-blaster (4) will be empty Gas B is sent into the reaction and evaporation equipment (3)；The reaction and evaporation equipment incline according to solid material flow direction level is micro- in equipment Tiltedly setting, vertical gas vent are connected with the gas feed of cleaner, hot solids outlet and central coaxial installation Scum cooler (5) is connected；The reaction provides the initial condition reacted and start to carry out with evaporation equipment with having heaters；

The cleaner is deduster (10), and dedusting ash outlet is connected vertically with the scum cooler (5), and gas goes out Mouth is docked with sulfur condenser (9)；

The cooling equipment includes scum cooler (5) and sulfur condenser (9)；The interior solid material of the scum cooler (5) with Thermal medium indirect heat exchange is moved, solid material import has at two: going out with described react with evaporation equipment (3) hot solids material at one Mouthful central coaxial is connected, exports at one with the deduster (10) dedusting ash and is connected vertically, the solid material of scum cooler (5) Outlet is connected with quenching water sealed tank (6)；Deliming hot gas and thermal medium indirect heat exchange is moved in the sulfur condenser, institute in hot gas Steam containing sulphur is discharged into sulphur liquid seal trough (8) after being condensed into sulphur drop by the interface of device bottom, and gas is discharged in sulfur condenser (9) Body contains SO₂, described will contain SO₂Flue gas is sent into the consumption of other devices or is discharged after cleaning desulfurization on the spot；

The slot class equipment includes sulphur liquid seal trough (8), quenching water sealed tank (6) and wet feed hopper (7)；The sulphur liquid seal trough (8) and Quenching water sealed tank (6) all has the function of fluid-tight, keeps in the liquid of specific level in the equal insertion groove of the feed pipe of the two；Sulphur fluid-tight The molten sulfur C equivalent that slot (8) comes sulfur condenser (9) is discharged；The quenching water sealed tank (6) is furnished with solid material conveying facility, will The wet feed hopper (7) is transferred to after the wetting of hot solids material quenching.

2. the iron-based object innocuity disposal system of high sulfur content as described in claim 1, which is characterized in that the sulfur condenser (9) it to horizontal low dip or is vertically arranged according to deliming hot gas stream in equipment.

3. the iron-based object innocuity disposal system of high sulfur content as claimed in claim 1 or 2, which is characterized in that the shifting heat is situated between Matter can system according to the present invention external public auxiliary condition in normal temperature air B, boiler water supply D, recirculated cooling water or conduction oil One or more.

4. the iron-based object innocuity disposal system of high sulfur content as claimed in claim 3, which is characterized in that the shifting thermal medium can It is used with opening a way in the component devices of the system, the step that can also be together in series between the component devices of the system makes With.

5. the iron-based object innocuity disposal system of high sulfur content as described in any claim in Claims 1-4, feature exist In the continuous feeding equipment further includes recyclegas aspirator (11), and the recyclegas aspirator (11) is selected from air blower Or one of Venturi tube.

6. a kind of method of the iron-based object harmless treatment of high sulfur content, uses in claim 1-5 described in any claim System carries out the iron-based object harmless treatment of high sulfur content, which comprises

2) above-mentioned three kinds of substances aoxidize after mixing in reaction and evaporation equipment (3), and the energy discharged persistently provides original The driving force that material decomposes, evaporation is required, elemental sulfur that is raw material is own and generating are evaporated to sulphur steam；Wherein oxygen-supplying amount is lower than " raw material is generated into ferriferous oxide and SO completely₂Required oxygen-supplying amount ", between " raw material is generated completely needed for ferriferous oxide supply oxygen Amount " to " generating ferriferous oxide and SO completely₂Between required oxygen-supplying amount "；It is controlled by adjusting amount of inert gas and oxygen-supplying amount anti- Answer the temperature of product system；The gas-solid mixture of the heat of generation constantly moves forward, and discharge is described to react and evaporation equipment (3)；

3) the gas object system isolated in the gas-solid mixture of the heat is dusted in deduster (10)；

4) condenser (9) the continuously gas object system after indirect cooling and dedusting, institute's sulfur-bearing steam in gas object system is condensed It is cooling；And continuously discharge contains SO₂Inert gas；

5) it is continuously discharged in reaction product system and includes the solids system of dedusting ash and directly cool down, iron oxide mixture is consolidated Body output object is transported and is stored in a moistened state.

7. the method for the iron-based object harmless treatment of high sulfur content as claimed in claim 6, which is characterized in that the tool of the method Body step are as follows:

S1. iron sulfenyl raw material A is from the hopper that feeds intake (1) because gravity is fallen into pusher (2), and pusher (2) is by the iron sulphur Based raw material A is continuously introduced into the arrival end of reaction and evaporation equipment (3) and forms the fine and close bed of material of one section of room temperature simultaneously in its arrival end It remains in the position；As the reciprocal pusher of pusher (2) acts, fine and close bed of material Forward；Air-blaster (4) will be empty Gas B is sent into reaction and evaporation equipment (3)；

S2. the fine and close bed of material for entering reaction with evaporation equipment (3) advances past and is located at the reaction and evaporation equipment (3) front Air blowpipe when, i.e., by blowpipe itself and its air-flow being blown out institute's fragmentation and dispersion；When the loose bed of material and air B are contacted, Oxidation and spontaneous combustion occurs；The elemental sulfur that raw material is had by oneself and generated is evaporated to sulphur steam by the reaction heat released；For iron is vulcanized Fully oxidized object is ferriferous oxide, and air capacity is added must be slightly larger than oxygen-supplying amount needed for generating ferriferous oxide；Superfluous oxygen with Elemental sulfur steam reaction generates SO₂, also release heat；Heat gas-solid mixture constantly move forward discharge it is described react set with evaporation Standby (3)；Gas with solid is discharged into deduster (10) by vertical gas vent respectively, hot solids are discharged into scum cooler (5)；

S3. institute is entered back into after entering deduster (10) removal solid flying dust by the gas of the reaction and evaporation equipment (3) discharge State sulfur condenser (9)；

S4. 100~270 DEG C are cooled to after deliming hot gas and shifting thermal medium indirect heat exchange, sulphur steams in the deliming hot gas Vapour is condensed into sulphur drop simultaneously, and sulphur drop is discharged into after sulphur liquid seal trough (8) by the interface of sulfur condenser (9) bottom with molten sulfur state This system is discharged；The gas of sulphur removal drop is gone to be sent into the consumption of other devices or discharge after cleaning desulfurization on the spot；

S5. the solid flying dust of deduster (10) discharge is discharged into scum cooling by the interface being connected vertically with scum cooler (5) Device (5)；The solid material of scum cooler (5) discharge falls into quenching water sealed tank (6)；The quenching water sealed tank (6) is by hot solids Material quenching, the water continuous supplementation of evaporation loss in slot, while making solid material particle that loose hole be kept to be easy to soak.

8. the method for the iron-based object harmless treatment of high sulfur content as claimed in claim 7, which is characterized in that the step S1- S5 is carried out under lower absolute pressure pressure, and range is between 0.01~0.2 MPa, preferably 0.05~0.15 MPa.

9. the method for the iron-based object harmless treatment of high sulfur content as claimed in claim 7 or 8, which is characterized in that S1 further include: The air-blaster (4) is mixed by the partial fume of air B and sulfur condenser (9) discharge of recyclegas aspirator (11) suction After conjunction, it is re-fed into reaction and evaporation equipment (3).

10. the method for the iron-based object harmless treatment of high sulfur content as described in any claim in claim 7 to 9, special Sign is, so that the bed of material is rapidly reached reaction temperature by room temperature in reaction and generated reaction heat in evaporation equipment (3) in S2 T, wherein 100 DEG C < T < 1200 DEG C；Preferably, 140 DEG C < T < 445 DEG C；It is highly preferred that 240 DEG C < T < 350 DEG C.