CN206607257U - A kind of system for producing DRI - Google Patents
A kind of system for producing DRI Download PDFInfo
- Publication number
- CN206607257U CN206607257U CN201720247401.6U CN201720247401U CN206607257U CN 206607257 U CN206607257 U CN 206607257U CN 201720247401 U CN201720247401 U CN 201720247401U CN 206607257 U CN206607257 U CN 206607257U
- Authority
- CN
- China
- Prior art keywords
- gas
- entrance
- outlet
- primordial
- inverse transformation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Carbon And Carbon Compounds (AREA)
Abstract
The utility model discloses a kind of system for producing DRI.The system includes gas-based shaft kiln, washer, compressor, desulfurization and decarburization tower, heat exchanger, inverse transformation stove, inter cooler and heating furnace.Washer is connected with gas-based shaft kiln and compressor respectively, and desulfurization and decarburization tower is connected with compressor, heat exchanger and heating furnace respectively, and heat exchanger is also connected with inverse transformation stove and inter cooler respectively, and heating furnace is also connected with washer, inter cooler and gas-based shaft kiln respectively.The utility model, as raw material, prepares gas-based shaft kiln also Primordial Qi, the cyclic utilization rate of top gas is more than 80% using top gas, improve the value of top gas, the preparation cost of also Primordial Qi is reduced, and reduces the pollution to environment, it is high by the quality of its obtained DRI.
Description
Technical field
The utility model belongs to direct reduction processes of Iron ores field, and in particular to a kind of system for producing DRI.
Background technology
DRI (DRI) is also known as sponge iron, is iron ore less than being reduced directly obtained iron content under fusion temperature
Product.Sponge iron is a kind of substitute of steel scrap, is electric furnace refining clean steel, the indispensable impurity diluent of high-quality steel, is to turn
Stove makes steel the cooling agent of high-quality, is to develop the indispensable raw material of Ferrous Metallurgy short route.
The technique of production DRI is referred to as direct-reduction process, belongs to non-blast furnace ironmaking technique, is divided into gas base method and coal
The major class of base method two.Wherein, 76% DRI is produced by gas base method.Gas base method using also Primordial Qi (its mainly into
It is divided into CO and H2) reducing iron ore, prepare DRI.At present, also Primordial Qi is main is made by raw material of natural gas.It is existing
Using natural gas prepare also Primordial Qi technique institute calorific requirement is more, equipment expensive, cause the cost of DRI of gained also very
It is high.
Utility model content
In view of the shortcomings of the prior art, the utility model provide firstly a kind of system for producing DRI, described
System includes：
Gas-based shaft kiln, with oxidation material entrance, high temperature reduction gas entrance, the first CO2Entrance, top gas are exported and direct
Reduced iron is exported；
Washer, is exported, the stove of the top gas entrance and the gas-based shaft kiln with top gas entrance and net top gas
Top gas outlet is connected；
Compressor, with net top gas entrance and the outlet of compression top gas, the net top gas entrance and the washer
Net top gas outlet be connected；
Desulfurization and decarburization tower, with compression top gas entrance, first also Primordial Qi outlet and CO2Outlet, the compression top gas
Entrance is connected with the compression top gas outlet of the compressor；
Heat exchanger, with H2Entrance, the 2nd CO2Entrance, high temperature inverse transformation gas access, preheating mixed gas outlet and low
Warm inverse transformation gas vent, the 2nd CO2The CO of entrance and the desulfurization and decarburization tower2Outlet is connected；
Inverse transformation stove, with preheating mixed gas entrance, high temperature inverse transformation gas vent and fuel gas entrance, the preheating
Mixed gas entrance is connected with the preheating mixed gas outlet of the heat exchanger, and the high temperature inverse transformation gas vent is changed with described
The high temperature inverse transformation gas access of hot device is connected；
Inter cooler, with low temperature inverse transformation gas access, second also Primordial Qi outlet and condensation-water drain, the low temperature inversion
Gas access is changed with the low temperature inverse transformation gas vent of the heat exchanger to be connected；
Heating furnace, with the outlet of low-temperature reduction gas entrance, fuel gas entrance and high temperature reduction gas, the low-temperature reduction gas enters
Mouth is connected with the first also Primordial Qi outlet, the second also Primordial Qi outlet of the inter cooler of the desulfurization and decarburization tower respectively, the combustion
Material gas entrance is connected with the net top gas outlet of the washer, the high temperature reduction gas outlet and the high temperature of the gas-based shaft kiln
Also Primordial Qi entrance is connected.
Further, the also Primordial Qi of the first of the desulfurization and decarburization tower exports the fuel gas entrance phase also with the heating furnace
Even.
Further, net top gas outlet or the desulfurization of the fuel gas entrance of the inverse transformation stove with the washer
The also Primordial Qi outlet of the first of decarbonizing tower is connected.
Further, the system also includes CO2Speed to put workshop, the CO2Speed to put workshop and the first of the gas-based shaft kiln
CO2Entrance is connected.
Further, the heat exchanger also includes the 3rd CO2Entrance, the 3rd CO2Entrance and the CO2Speed to put workshop
It is connected.
The utility model, as raw material, prepares gas-based shaft kiln also Primordial Qi, the cyclic utilization rate of top gas using top gas
More than 80%, the value of top gas is improved, the preparation cost of also Primordial Qi is reduced, and reduces the dirt to environment
Dye.
Secondly, gas-based shaft kiln of the present utility model uses CO2Dynamic sealing is carried out, good sealing can not only be played and made
With while reducing N in top gas2Enrichment, therefore the cyclic utilization rate of top gas can be improved, and leak into top gas
CO2Can as follow-up inverse transformation process reaction raw materials.
Further, the utility model prepares also Primordial Qi using inverse transformation stove, and inverse transformation stove used need to only be loaded inexpensively
Catalyst can obtain the also Primordial Qi of high-quality, both reduced investment, energy consumption is reduced again.The obtained also Primordial Qi of the utility model
Reducing power it is strong, also CO and H in Primordial Qi2Content be higher than 85%, it is high by the quality of its obtained DRI.
In addition, top gas of the present utility model recycling after desulfurization and decarburization is handled, therefore the utility model is carried
The technique of confession can be used for reducing high oxysulfide pelletizing.
The utility model can be used for industrial production device, particularly big-and-middle-sized commerical test device.
Brief description of the drawings
Fig. 1 be the utility model embodiment in a kind of DRI preparation system structural representation.
Embodiment
Below in conjunction with drawings and examples, embodiment of the present utility model is described in more details, with
Just scheme of the present utility model and the advantage of its various aspects be better understood when.However, specific implementations described below
Mode and embodiment are only the purposes of explanation, rather than to limitation of the present utility model.
As shown in figure 1, the system for the production DRI that the utility model is provided includes：Gas-based shaft kiln 1, washer 2,
Compressor 3, desulfurization and decarburization tower 4, heat exchanger 5, inverse transformation stove 6, inter cooler 7, heating furnace 8 and CO2Speed to put workshop 9.
Gas-based shaft kiln 1 has oxidation material entrance, high temperature reduction gas entrance, the first CO2Entrance, top gas are exported and direct
Reduced iron is exported.
There is washer 2 top gas entrance and net top gas to export, and the top gas of top gas entrance and gas-based shaft kiln 1 is exported
It is connected.
Compressor 3 has net top gas entrance and the outlet of compression top gas, the net furnace roof of net top gas entrance and washer 2
Gas outlet is connected.
Desulfurization and decarburization tower 4 has compression top gas entrance, first also Primordial Qi outlet and CO2Outlet, compresses top gas entrance
It is connected with the compression top gas outlet of compressor 3.
Heat exchanger 5 has H2Entrance, the 2nd CO2Entrance, the 3rd CO2Entrance, high temperature inverse transformation gas access, pre- hot mixing
Gas vent and low temperature inverse transformation gas vent, the 2nd CO2The CO of entrance and desulfurization and decarburization tower 42Outlet is connected.
Inverse transformation stove 6 has preheating mixed gas entrance, high temperature inverse transformation gas vent and fuel gas entrance, pre- hot mixing
Gas access is connected with the preheating mixed gas outlet of heat exchanger 5, the high temperature inversion of high temperature inverse transformation gas vent and heat exchanger 5
Change gas access to be connected, fuel gas entrance goes back Primordial Qi with the net top gas outlet of washer 2 and the first of desulfurization and decarburization tower 4 respectively
Outlet is connected.
Inter cooler 7 has low temperature inverse transformation gas access, second also Primordial Qi outlet and condensation-water drain, low temperature inversion ventilation
Body entrance is connected with the low temperature inverse transformation gas vent of heat exchanger 5.
Heating furnace 8 has low-temperature reduction gas entrance, fuel gas entrance and the outlet of high temperature reduction gas, low-temperature reduction gas entrance point
Be not connected with the first of desulfurization and decarburization tower 4 the also Primordial Qi outlet, the second also Primordial Qi outlet of inter cooler 7, fuel gas entrance respectively with
The net top gas outlet of washer 2 is connected with the first also Primordial Qi outlet of desulfurization and decarburization tower 4, and the outlet of high temperature reduction gas is erected with gas base
The high temperature reduction gas entrance of stove 1 is connected.
CO2Speed to put first CO of the workshop 9 respectively with gas-based shaft kiln 123rd CO of entrance and heat exchanger 52Entrance is connected.
Contain N in top gas2, in order to prevent N2Unrestricted circulation, it is therefore desirable to discharge a part of top gas.This practicality is new
Type is a part of by the first also Primordial Qi discharge of the net top gas of washer 2 and desulfurization and decarburization tower 4, and as fuel gas for inverse
Change furnace 6 and heating furnace 8 are used.In Fig. 1, the net stove of the fuel gas entrance of inverse transformation stove 6 and heating furnace 8 simultaneously with washer 2
The first also Primordial Qi outlet that top gas exports with desulfurization and decarburization tower 4 is connected.It should be noted that the fuel gas entrance of inverse transformation stove 6
Or the fuel gas entrance of heating furnace 8 also individually can go back Primordial Qi with the net top gas outlet of washer 2 or the first of desulfurization and decarburization tower 4
Outlet is connected.
CO of the present utility model2Speed to put the CO that workshop 9 can be coal plant or petrochemical plant2Speed to put workshop, this practicality
It is new to be changed harmful to treasure for producing reducing agent CO, it can greatly reduce the CO for going back original system generation2Discharge.
Heat exchanger 5 sets the 3rd CO2The purpose of entrance is in order to toward adding new CO in system2, to prepare more CO.
It will be apparent that heat exchanger 5 can not also set the 3rd CO2Entrance, now, prepares the second CO for going back Primordial Qi2Can be de- from desulfurization entirely
The 2nd CO that carbon tower 4 is discharged2。
The utility model, as raw material, prepares gas-based shaft kiln also Primordial Qi, the cyclic utilization rate of top gas using top gas
More than 80%, the value of top gas is improved, the preparation cost of also Primordial Qi is reduced, and reduces the dirt to environment
Dye.
Further, the utility model prepares also Primordial Qi using inverse transformation stove, and inverse transformation stove used need to only be loaded inexpensively
Catalyst can obtain the also Primordial Qi of high-quality, both reduced investment, energy consumption is reduced again.The obtained also Primordial Qi of the utility model
Reducing power it is strong, also CO and H in Primordial Qi2Content be higher than 85%, it is high by the quality of its obtained DRI.
In addition, top gas of the present utility model recycling after desulfurization and decarburization is handled, therefore the utility model is carried
The technique of confession can be used for reducing high oxysulfide pelletizing.
The utility model can be used for industrial production device, particularly big-and-middle-sized commerical test device.
In the utility model, gas-based shaft kiln 1 uses CO2(the first CO is referred to as in the utility model2) to enter Mobile state close
Envelope, can not only play good sealing function, while reducing N in top gas2Enrichment, therefore the circulation of top gas can be improved
Utilization rate, and leak into the CO in top gas2Can as follow-up inverse transformation process reaction raw materials.First CO2From CO2Speed
Put workshop.
CO2And H2Reacted as follows in the presence of catalyst (the utility model is also referred to as reverse shift reaction)：
CO2+H2=CO+H2O
The utility model prepares also Primordial Qi using inverse transformation stove, and inverse transformation stove used need to only load cheap cupper-based catalyst
Agent or ferrum-based catalyst can obtain the also Primordial Qi of high-quality.Investment can be reduced, energy consumption can be reduced again.The utility model is made
Also Primordial Qi reducing power it is strong, also CO and H in Primordial Qi2Content be higher than 85%.
It should be noted that outer unless specified otherwise, the percentage composition of all gases referred to of the utility model is volume
Content, the percentage of gas is percent by volume.
Below with reference to specific embodiment, the utility model is illustrated.Institute's taking technique condition value in following embodiments
It is exemplary, its desirable number range is as shown in foregoing utility model content.Detection method used in following embodiments
It is the conventional detection method of the industry.
Embodiment 1
The detailed process of the present embodiment production DRI is as follows：
(1) also Primordial Qi is prepared：
1) prepare first and go back Primordial Qi：
The top gas discharged from gas-based shaft kiln 1 is sent into dedusting in washer 2, dehydration, net top gas is obtained.
It will be compressed in 80% net top gas feeding compressor 3, obtain compression top gas.
Compression top gas is sent into desulfurization and decarburization tower 4, hydrogen sulfide and carbon dioxide in removing top gas obtain first
Also Primordial Qi, the 2nd CO2.2nd CO2Volume ratio with the first also Primordial Qi is 1:9.
2) prepare second and go back Primordial Qi：
Prepare the first CO2, the 3rd CO2And H2；First CO2, the 3rd CO2From CO2Speed to put workshop 9, CO2Speed to put workshop 9 be
Petrochemical plant CO2Speed to put workshop；First CO2, the 3rd CO2And H2Purity be 95%, remaining composition be N2。
By the 2nd CO2Send into heat exchanger 5, and toward the 3rd CO of addition in heat exchanger2And H2, the 2nd CO2, the 3rd CO2And H2
It is preheated after being mixed in heat exchanger 5 as preheating mixed gas.2nd CO2, the 3rd CO2And H2Volume ratio be 30：0.1：70,
The temperature of the preheating mixed gas of acquisition is 400 DEG C.
It will be reacted in preheating mixed gas feeding inverse transformation stove 6 in the presence of catalyst, obtain high temperature inverse transformation
Gas.It is 500 DEG C to preheat reaction temperature of the mixed gas in inverse transformation stove 6, and the catalyst used in inverse transformation stove 6 is urged to be copper-based
Agent.
By high temperature inverse transformation gas send back in heat exchanger 5 with the 2nd CO2, the 3rd CO2And H2The heat transfer of mixture gas of formation,
Mixed gas is preheated, and high temperature inverse transformation gas is changed into low temperature inverse transformation gas.
Low temperature inverse transformation gas is sent into inter cooler 7 and cooled down, removes the vapor in low temperature inverse transformation gas, obtains the
Two go back Primordial Qi.
(2) DRI is prepared
Prepare the acid pellet that full Iron grade is 62%；
First also Primordial Qi and the second reduction pneumatic transmission is entered to be heated to 1000 DEG C in heating furnace 8 after mixing, high temperature reduction is obtained
Gas.The mol ratio of second also Primordial Qi and the first also Primordial Qi is 0.4:1；CO and H in high temperature reduction gas2Content be 90%, H2/CO
Ratio be 1.5；The content of vapor is 3.5%, CO in high temperature reduction gas2Content be 4.5%.The combustion that heating furnace 8 is used
Expect the net top gas that gas is remaining 20%.
High temperature reduction pneumatic transmission is entered above-mentioned acid pellet is reduced in gas-based shaft kiln 1, prepare DRI.Gas-based shaft kiln 1
Using the first CO2Carry out dynamic sealing, the first CO2The amount of leaking into for 20 marks it is vertical/DRI.
The degree of metalization of obtained DRI is 93%.
Embodiment 2
The detailed process of the present embodiment production DRI is as follows：
(1) also Primordial Qi is prepared：
1) prepare first and go back Primordial Qi：
The top gas discharged from gas-based shaft kiln 1 is sent into dedusting in washer 2, dehydration, net top gas is obtained.
It will be compressed in 90% net top gas feeding compressor 3, obtain compression top gas.
Compression top gas is sent into desulfurization and decarburization tower 4, hydrogen sulfide and carbon dioxide in removing top gas obtain first
Also Primordial Qi, the 2nd CO2.2nd CO2Volume ratio with the first also Primordial Qi is 1:4.
2) prepare second and go back Primordial Qi：
Prepare the first CO2And H2；First CO2From CO2Speed to put workshop 9, CO2Speed to put workshop 9 for coal plant CO2Speed to put car
Between；First CO2And H2Purity be 99%, remaining composition be N2。
By the 2nd CO2Send into heat exchanger 5, and toward adding H in heat exchanger2, the 2nd CO2And H2After being mixed in heat exchanger 5
It is preheated as preheating mixed gas.2nd CO2And H2Volume ratio be 20：80, the temperature of the preheating mixed gas of acquisition is 650
℃。
It will be reacted in preheating mixed gas feeding inverse transformation stove 6 in the presence of catalyst, obtain high temperature inverse transformation
Gas.It is 700 DEG C to preheat reaction temperature of the mixed gas in inverse transformation stove 6, and the catalyst used in inverse transformation stove 6 is urged for iron-based
Agent.
By high temperature inverse transformation gas send back in heat exchanger 5 with the 2nd CO2And H2The heat transfer of mixture gas of formation, mixed gas
It is preheated, high temperature inverse transformation gas is changed into low temperature inverse transformation gas.
Low temperature inverse transformation gas is sent into inter cooler 7 and cooled down, removes the vapor in low temperature inverse transformation gas, obtains the
Two go back Primordial Qi.
(2) DRI is prepared
Prepare the acid pellet that full Iron grade is 65%；
Second also Primordial Qi and the first of 99% the reduction pneumatic transmission is entered to be heated to 800 DEG C in heating furnace 8 after mixing, high temperature is obtained
Also Primordial Qi.The mol ratio of second also Primordial Qi and the first also Primordial Qi is 0.6:1；CO and H in high temperature reduction gas2Content be 91%,
H2/ CO ratio is 1.9；The content of vapor is 2.3%, CO in high temperature reduction gas2Content be 4%.What heating furnace 8 was used
Fuel gas is remaining 10% net top gas and the 1% the first also Primordial Qi.
High temperature reduction pneumatic transmission is entered above-mentioned acid pellet is reduced in gas-based shaft kiln 1, prepare DRI.Gas-based shaft kiln 1
Using the first CO2Carry out dynamic sealing, the first CO2The amount of leaking into for 10 marks it is vertical/DRI.
The degree of metalization of obtained DRI is 94%.
Embodiment 3
The detailed process of the present embodiment production DRI is as follows：
(1) also Primordial Qi is prepared：
1) prepare first and go back Primordial Qi：
The top gas discharged from gas-based shaft kiln 1 is sent into dedusting in washer 2, dehydration, net top gas is obtained.
It will be compressed in 85% net top gas feeding compressor 3, obtain compression top gas.
Compression top gas is sent into desulfurization and decarburization tower 4, hydrogen sulfide and carbon dioxide in removing top gas obtain first
Also Primordial Qi, the 2nd CO2.First goes back Primordial Qi and the 2nd CO2Volume ratio be 1:6.
2) prepare second and go back Primordial Qi：
Prepare the first CO2, the 3rd CO2And H2；First CO2, the 3rd CO2From CO2Speed to put workshop 9, CO2Speed to put workshop 9 be
Petrochemical plant CO2Speed to put workshop；First CO2, the 3rd CO2And H2Purity be 97%, remaining composition be N2。
By the 2nd CO2Send into heat exchanger 5, and toward the 3rd CO of addition in heat exchanger2And H2, the 2nd CO2, the 3rd CO2And H2
It is preheated after being mixed in heat exchanger 5 as preheating mixed gas.2nd CO2, the 3rd CO2And H2Volume ratio be 15：15：65, obtain
The temperature of the preheating mixed gas obtained is 500 DEG C.
It will be reacted in preheating mixed gas feeding inverse transformation stove 6 in the presence of catalyst, obtain high temperature inverse transformation
Gas.It is 600 DEG C to preheat reaction temperature of the mixed gas in inverse transformation stove 6, and the catalyst used in inverse transformation stove 6 is urged to be copper-based
Agent.
By high temperature inverse transformation gas send back in heat exchanger 5 with the 2nd CO2, the 3rd CO2And H2The heat transfer of mixture gas of formation,
Mixed gas is preheated, and high temperature inverse transformation gas is changed into low temperature inverse transformation gas；
Low temperature inverse transformation gas is sent into inter cooler 7 and cooled down, removes the vapor in low temperature inverse transformation gas, obtains the
Two go back Primordial Qi.
(2) DRI is prepared
Prepare the acid pellet that full Iron grade is 63%；
Second also Primordial Qi and the first of 80% the reduction pneumatic transmission is entered to be heated to 900 DEG C in heating furnace 8 after mixing, high temperature is obtained
Also Primordial Qi.The mol ratio of second also Primordial Qi and the first also Primordial Qi is 0.5:1；CO and H in high temperature reduction gas2Content be 88%,
H2/ CO ratio is 1.7；The content of vapor is 2.3%, CO in high temperature reduction gas2Content be 3.5%.Heating furnace 8 is used
Fuel gas be washer 2 discharge periodic off-gases.
High temperature reduction pneumatic transmission is entered above-mentioned acid pellet is reduced in gas-based shaft kiln 1, prepare DRI.Gas-based shaft kiln 1
Using the first CO2Carry out dynamic sealing, the first CO2The amount of leaking into for 15 marks it is vertical/DRI.
The fuel gas that inverse transformation stove 6 and heating furnace 8 are used is remaining 15% net top gas and the 20% the first also Primordial Qi.
The degree of metalization of obtained DRI is 92%.
To sum up, the utility model prepares gas-based shaft kiln also Primordial Qi, the circulation profit of top gas using top gas as raw material
With rate more than 80%, the value of top gas is improved, the preparation cost of also Primordial Qi is reduced, and reduced to environment
Pollution.
Secondly, gas-based shaft kiln of the present utility model uses CO2Dynamic sealing is carried out, good sealing can not only be played and made
With while reducing N in top gas2Enrichment, therefore the cyclic utilization rate of top gas can be improved, and leak into top gas
CO2Can as follow-up inverse transformation process reaction raw materials.
Further, the utility model prepares also Primordial Qi using inverse transformation stove, and inverse transformation stove used need to only be loaded inexpensively
Catalyst can obtain the also Primordial Qi of high-quality, both reduced investment, energy consumption is reduced again.The obtained also Primordial Qi of the utility model
Reducing power it is strong, also CO and H in Primordial Qi2Content be higher than 85%, it is high by the quality of its obtained DRI.
In addition, top gas of the present utility model recycling after desulfurization and decarburization is handled, therefore the utility model is carried
The technique of confession can be used for reducing high oxysulfide pelletizing.
The utility model can be used for industrial production device, particularly big-and-middle-sized commerical test device.
Obviously, above-described embodiment is only intended to clearly illustrate the utility model example, and not to embodiment party
The restriction of formula.For those of ordinary skill in the field, other differences can also be made on the basis of the above description
The change or variation of form.There is no necessity and possibility to exhaust all the enbodiments.And thus amplify out aobvious and
Among the change or variation being clear to are still in protection domain of the present utility model.
Claims (5)
1. a kind of system for producing DRI, it is characterised in that the system includes：
Gas-based shaft kiln, with oxidation material entrance, high temperature reduction gas entrance, the first CO2Entrance, top gas outlet and direct-reduction
Iron is exported；
Washer, is exported, the top gas of the top gas entrance and the gas-based shaft kiln with top gas entrance and net top gas
Outlet is connected；
Compressor, with net top gas entrance and the outlet of compression top gas, the net top gas entrance is net with the washer
Top gas outlet is connected；
Desulfurization and decarburization tower, with compression top gas entrance, first also Primordial Qi outlet and CO2Outlet, it is described compression top gas entrance with
The compression top gas outlet of the compressor is connected；
Heat exchanger, with H2Entrance, the 2nd CO2Entrance, high temperature inverse transformation gas access, preheating mixed gas outlet and low temperature are inverse
Convert gas vent, the 2nd CO2The CO of entrance and the desulfurization and decarburization tower2Outlet is connected；
Inverse transformation stove, with preheating mixed gas entrance, high temperature inverse transformation gas vent and fuel gas entrance, the pre- hot mixing
Gas access is connected with the preheating mixed gas outlet of the heat exchanger, the high temperature inverse transformation gas vent and the heat exchanger
High temperature inverse transformation gas access be connected；
Inter cooler, with low temperature inverse transformation gas access, second also Primordial Qi outlet and condensation-water drain, the low temperature inversion ventilation
Body entrance is connected with the low temperature inverse transformation gas vent of the heat exchanger；
Heating furnace, with the outlet of low-temperature reduction gas entrance, fuel gas entrance and high temperature reduction gas, the low-temperature reduction gas entrance point
It is not connected with the first also Primordial Qi outlet, the second also Primordial Qi outlet of the inter cooler of the desulfurization and decarburization tower, the fuel gas
Entrance is connected with the net top gas outlet of the washer, the high temperature reduction gas outlet and the high temperature reduction of the gas-based shaft kiln
Gas entrance is connected.
2. system according to claim 1, it is characterised in that the fuel gas entrance of the heating furnace is also de- with the desulfurization
The also Primordial Qi outlet of the first of carbon tower is connected.
3. system according to claim 1, it is characterised in that the fuel gas entrance of the inverse transformation stove and the washer
Net top gas outlet and/or the desulfurization and decarburization tower first also Primordial Qi outlet be connected.
4. system according to claim 1, it is characterised in that the system also includes CO2Speed to put workshop, the CO2Speed to put
Workshop and the first CO of the gas-based shaft kiln2Entrance is connected.
5. system according to claim 4, it is characterised in that the heat exchanger also includes the 3rd CO2Entrance, the described 3rd
CO2Entrance and the CO2Speeding, it is connected to put workshop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720247401.6U CN206607257U (en) | 2017-03-14 | 2017-03-14 | A kind of system for producing DRI |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720247401.6U CN206607257U (en) | 2017-03-14 | 2017-03-14 | A kind of system for producing DRI |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206607257U true CN206607257U (en) | 2017-11-03 |
Family
ID=60165320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720247401.6U Expired - Fee Related CN206607257U (en) | 2017-03-14 | 2017-03-14 | A kind of system for producing DRI |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206607257U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107058663A (en) * | 2017-03-14 | 2017-08-18 | 江苏省冶金设计院有限公司 | A kind of system and method for producing DRI |
-
2017
- 2017-03-14 CN CN201720247401.6U patent/CN206607257U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107058663A (en) * | 2017-03-14 | 2017-08-18 | 江苏省冶金设计院有限公司 | A kind of system and method for producing DRI |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102424876B (en) | Non-blast-furnace iron making process for directly reducing vanadium titanomagnetite through gas-based shaft furnace | |
| CN102037145B (en) | Method for melting raw iron while recirculating blast furnace gas by adding hydrocarbons | |
| CN101260448B (en) | Fusion reduction iron-smelting method for directly using concentrate powder | |
| CN113774178A (en) | Production system of Ou metallurgical furnace and hydrogen-rich carbon circulation blast furnace coupling | |
| CN101643810B (en) | Technology for producing sponge iron and high purity CO gas | |
| CN106521073A (en) | System and method for preparing direct reduced iron through top gas | |
| CN103290160B (en) | Process for producing direct reduced iron (DRI) by carrying out pure oxygen gasification on semicoke | |
| CN107337179A (en) | The preparation system and method for a kind of gas-based shaft kiln also Primordial Qi | |
| CN101906501A (en) | Direct steelmaking process by using fine ores, coal and oxygen | |
| CN103276133B (en) | Method for producing direct reduction iron by utilizing partial oxidation of natural gas | |
| WO2023240753A1 (en) | Low-carbon smelting system and method based on blast furnace-steelmaking furnace process coupled carbon cycle | |
| CN114395648A (en) | Iron-making method of hydrogen-carbon-rich circulating blast furnace | |
| CN106636508B (en) | A kind of efficient circulation utilizes the iron-smelting process of top gas | |
| CN102409126B (en) | Integrated reduction ironmaking furnace and integrated reduction ironmaking process | |
| CN206607257U (en) | A kind of system for producing DRI | |
| CN107058663A (en) | A kind of system and method for producing DRI | |
| CN107779534B (en) | Process for treating zinc-containing and iron dust and mud in iron and steel plant by shaft furnace method | |
| CN206256095U (en) | The system that a kind of new gas-based shaft kiln prepares sponge iron | |
| CN106399617A (en) | Direct reduced iron making system and method for gas-based shaft furnace | |
| CN206607258U (en) | The system that a kind of utilization gas-based shaft kiln prepares DRI | |
| CN102559986B (en) | Method for single-stage vanadium extraction in same converter | |
| CN107299176A (en) | A kind of system and method for shaft furnace production DRI | |
| CN106834584A (en) | A kind of method of gas-based shaft kiln and production DRI | |
| CN106702065A (en) | Novel system and novel method for preparing sponge iron through gas-based shaft kiln | |
| CN106834582A (en) | Hot charging gas-based shaft kiln system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171103 Termination date: 20180314 |