CN105441608A - Coal injection nitrogen recovery device and process - Google Patents

Coal injection nitrogen recovery device and process Download PDF

Info

Publication number
CN105441608A
CN105441608A CN201410503489.4A CN201410503489A CN105441608A CN 105441608 A CN105441608 A CN 105441608A CN 201410503489 A CN201410503489 A CN 201410503489A CN 105441608 A CN105441608 A CN 105441608A
Authority
CN
China
Prior art keywords
tank
blast furnace
winding
recovery
pressure relief
Prior art date
Application number
CN201410503489.4A
Other languages
Chinese (zh)
Inventor
王振东
马克
Original Assignee
鞍钢股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 鞍钢股份有限公司 filed Critical 鞍钢股份有限公司
Priority to CN201410503489.4A priority Critical patent/CN105441608A/en
Publication of CN105441608A publication Critical patent/CN105441608A/en

Links

Abstract

The invention relates to a coal injection nitrogen recovery device and process. The device includes a first blast furnace blowing tank group and a second blast furnace blowing tank group, the first blast furnace blowing tank group and the second blast furnace blowing tank group are respectively corresponding to a plurality of parallelly disposed blowing tanks, the discharge pipeline of each blowing tank is connected to a corresponding cloth bag dedusting box through a discharge valve, the discharge pipeline of each blowing tank is equipped with a pressure relief branch pipe respectively, and all the pressure relief branch pipes are connected through a pressure relief main pipe, each pressure relief branch pipe is equipped with a pressure relief valve, and the pressure relief main pipe between the first blast furnace blowing tank group and the second blast furnace blowing tank group is equipped with a communication valve. The recovery device and process provided by the invention realize multi-series parallel tank blowing nitrogen discharge recovery, achieve secondary utilization of energy resources, reduce the blast furnace coal injection cost, also reduce the cloth bag washout influence, improve the cloth bag operation cycle, and reduce cloth bag replacement frequency and quantity. The recovery device and process are suitable for both newly built and reconstruction projects, and are also applicable to blast furnace blowing systems with more than two blast furnaces.

Description

A kind of coal powder injection nitrogen gas recovering apparatus and technique

Technical field

The present invention relates to field of blast furnace coal injection, particularly a kind of coal powder injection nitrogen gas recovering apparatus and technique.

Background technology

In the coal dust technique of domestic Large Steel ironworks, main employing 3 pot type single-pipelines arranged side by side add dispenser technology, and this kind of technology can save nitrogen use level.But this kind of technique needs just blowing process to be designed to three tank block form winding-up forms at the design initial stage, affect greatly by initial designs, the traditional injection system of steel mill is corresponding two the winding-up tanks of a Pulverized Coal Bin, and therefore nitrogen recycling is difficult to be used for reference by each big steel factory utilize.Existing coal injection system is utilize diffuse channel to diffuse after bag-type dust in the middle of air the nitrogen of tank group after winding-up tank group coal injection terminates, not only nitrogen utilization ratio is low for this kind of technique, and the high pressure nitrogen diffused washes away seriously to cloth bag, greatly reduces the life cycle of cloth bag.

Summary of the invention

Technical problem to be solved by this invention is to provide a kind of coal powder injection nitrogen gas recovering apparatus, is applicable to multi-series and tank blowing process, can realizes the nitrogen recycling that steel mill has coal injection system.

For achieving the above object, the present invention realizes by the following technical solutions:

A kind of coal powder injection nitrogen gas recovering apparatus, comprise the first injecting tank of blast furnace group and the second injecting tank of blast furnace group, first injecting tank of blast furnace group and the second injecting tank of blast furnace group be corresponding multiple winding-up tank be set up in parallel respectively, the diffuse channel of each winding-up tank is connected with corresponding bag-type dust case by diffusion valve, the diffuse channel of each winding-up tank is installed respectively a release arm, and by a release house steward, all release arms are coupled together, each release arm installs a relief valve, upper installation communication valve of release house steward of first injecting tank of blast furnace group and the second injecting tank of blast furnace group centre.

The first described injecting tank of blast furnace group comprises at least 2 winding-up tanks be set up in parallel.

The second described injecting tank of blast furnace group comprises at least 2 winding-up tanks be set up in parallel.

A kind of coal powder injection nitrogen gas recovering apparatus can realize three productions technique: monophyly reclaims one to one, dual system reclaims one to one and dual system two to two recovery.

1, monophyly way of recycling one to one

Residue nitrogen recycling is realized in respective system of blast furnace injection.When each own two in running order two the winding-up tanks being in waiting status of two system of blast furnace injection, after the winding-up of one of them tank terminates, open this tank and treat with blast furnace system the relief valve that pressurising is jetted, the high pressure nitrogen in this winding-up tank is unloaded and is pressed onto in same blast furnace system winding-up tank.After realizing nitrogen recycling, close corresponding relief valve, and then carry out normal blowing operation.In the ordinary course of things, this mode is first-selected, and gas recovery close together, the rate of recovery is higher, and operator's operation of being more convenient for.

2, dual system way of recycling one to one

If when separately in blast furnace system, in running order winding-up tank needs release, this blast furnace system N-free diet method pressurising winding-up tank, and another blast furnace system winding-up tank has wait pressurising winding-up tank, opened by the communication valve of two system of blast furnace injection, then opening this blast furnace needs the winding-up tank of release and another blast furnace to need the relief valve of the winding-up tank of pressurising to carry out recovery nitrogen.After nitrogen to be recycled, first close the relief valve of pressurising winding-up tank, then close the communication valve of two system of blast furnace injection, finally close the relief valve of release winding-up tank, complete whole nitrogen recycling process.

3, dual system two is to two ways of recycling

If there are two tanks of jetting to need release in two system of blast furnace injection, there are two tanks of jetting to be in and wait for pressurising state, two relief valves needing the winding-up tank of release and two to treat the winding-up tank of pressurising can be opened simultaneously, carry out the release simultaneously of two winding-up tanks, carry out nitrogen recycling with another two winding-up tanks simultaneously, realize dual system two to two parallel recovery, save the nitrogen recycling time further.

Compared with prior art, the invention has the beneficial effects as follows:

A kind of coal powder injection nitrogen gas recovering apparatus, achieves multi-series and tank nitrogen-blow diffuses recovery, can realize the nitrogen recycling of existing coal injection system, accomplish the second stage employ of the energy, reduces nitrogen usage quantity, and then reduces pulverized coal injection in blast furnace cost.And reduce cloth bag and wash away impact, improve the cloth bag cycle of operation, reduce cloth bag and change the frequency and quantity.No matter to newly-built or transformation project is all applicable, be equally applicable to more than 2 system of blast furnace injection.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention.

In figure: 1-1# winding-up tank 2-2# winding-up tank 3-3# winding-up tank 4-4# winding-up tank 5-5# winding-up tank 6-6# winding-up tank 7-7# winding-up tank 8-8# winding-up tank 9-1# bag-type dust case 10-2# bag-type dust case 11-3# bag-type dust case 12-4# bag-type dust case 13-1# blast furnace 14-2# blast furnace 15-release house steward V-1 ~ V-8-relief valve V-9-communication valve V-10 ~ V-17-diffusion valve

Embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further illustrated:

As shown in Figure 1, a kind of coal powder injection nitrogen gas recovering apparatus, comprise the injection system of two blast furnaces, first injecting tank of blast furnace group and the second injecting tank of blast furnace group, first injecting tank of blast furnace group is set up in parallel by 1# winding-up tank 1 ~ 4# winding-up tank 4, there is provided coal dust by two Pulverized Coal Bin, 4 winding-up tanks are 1# blast furnace 13 coal injection jointly.Second injecting tank of blast furnace group is set up in parallel by 5# winding-up tank 5 ~ 8# winding-up tank 8, and provide coal dust by two Pulverized Coal Bin, 4 winding-up tanks are 2# blast furnace 14 coal injection jointly.

The diffuse channel of 1# winding-up tank 1 and 2# winding-up tank 2 is connected with 1# bag-type dust case 9, the diffuse channel of 3# winding-up tank 3 and 4# winding-up tank 4 is connected with 2# bag-type dust case 10, the diffuse channel of 5# winding-up tank 5 and 6# winding-up tank 6 is connected with 3# bag-type dust case 11, the diffuse channel of 7# winding-up tank 7 and 8# winding-up tank 8 is connected with 4# bag-type dust case 12, the diffuse channel of each winding-up tank is installed respectively and disperses valve V-10 ~ V-17, the diffuse channel of each winding-up tank is installed respectively a release arm, and by a release house steward 15, all release arms are coupled together, each release arm installs a relief valve V-1 ~ V-8, the release house steward 15 of the first injecting tank of blast furnace group and the second injecting tank of blast furnace group centre installs a communication valve V-9.

A kind of coal powder injection nitrogen gas recovering apparatus can realize three productions technique: monophyly reclaims one to one, dual system reclaims one to one and dual system two to two recovery.

1, monophyly way of recycling one to one

Residue nitrogen recycling is realized in 1# system of blast furnace injection or 2# system of blast furnace injection.When each own two in running order two the winding-up tanks being in waiting status of 1# or 2# system of blast furnace injection, after the winding-up of one of them tank terminates, open this tank and treat with blast furnace system the relief valve that pressurising is jetted, the high pressure nitrogen in this winding-up tank is unloaded and is pressed onto in same blast furnace system winding-up tank.After realizing nitrogen recycling, close corresponding relief valve, and then carry out normal blowing operation.In the ordinary course of things, this mode is first-selected, and gas recovery close together, the rate of recovery is higher, and operator's operation of being more convenient for.

2, dual system way of recycling one to one

If 1# or 2# is when in running order winding-up tank needs release in blast furnace system separately, this blast furnace system N-free diet method pressurising winding-up tank, and another blast furnace system winding-up tank has wait pressurising winding-up tank, opened by the communication valve V-9 of two system of blast furnace injection, then opening this blast furnace needs the winding-up tank of release and another blast furnace to need the relief valve of the winding-up tank of pressurising to carry out recovery nitrogen.After nitrogen to be recycled, first close the relief valve of pressurising winding-up tank, then close the communication valve of two system of blast furnace injection, finally close the relief valve of release winding-up tank, complete whole nitrogen recycling process.

3, dual system two is to two ways of recycling

If there are two tanks of jetting to need release in 1#, 2# two system of blast furnace injection, there are two tanks of jetting to be in and wait for pressurising state, two relief valves needing the winding-up tank of release and two to treat the winding-up tank of pressurising can be opened simultaneously, carry out the release simultaneously of two winding-up tanks, carry out nitrogen recycling with another two winding-up tanks simultaneously, realize dual system two to two parallel recovery, save the nitrogen recycling time further.

Be only ultimate principle of the present invention above, not impose any restrictions the present invention, the present invention of every foundation carries out equivalent variations and modification to it, all within the category of the art of this patent protection scheme.

Claims (4)

1. a coal powder injection nitrogen gas recovering apparatus, it is characterized in that, comprise the first injecting tank of blast furnace group and the second injecting tank of blast furnace group, first injecting tank of blast furnace group and the second injecting tank of blast furnace group be corresponding multiple winding-up tank be set up in parallel respectively, the diffuse channel of each winding-up tank is connected with corresponding bag-type dust case by diffusion valve, the diffuse channel of each winding-up tank is installed respectively a release arm, and by a release house steward, all release arms are coupled together, each release arm installs a relief valve, upper installation communication valve of release house steward of first injecting tank of blast furnace group and the second injecting tank of blast furnace group centre.
2. a kind of coal powder injection nitrogen gas recovering apparatus according to claim 1, is characterized in that, the first described injecting tank of blast furnace group comprises at least 2 winding-up tanks be set up in parallel.
3. a kind of coal powder injection nitrogen gas recovering apparatus according to claim 1, is characterized in that, the second described injecting tank of blast furnace group comprises at least 2 winding-up tanks be set up in parallel.
4. a kind of coal powder injection nitrogen gas recovering apparatus technique according to claim 1, is characterized in that, adopt above device to realize monophyly reclaims one to one, dual system reclaims one to one and dual system two to two recovery.
CN201410503489.4A 2014-09-25 2014-09-25 Coal injection nitrogen recovery device and process CN105441608A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410503489.4A CN105441608A (en) 2014-09-25 2014-09-25 Coal injection nitrogen recovery device and process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410503489.4A CN105441608A (en) 2014-09-25 2014-09-25 Coal injection nitrogen recovery device and process

Publications (1)

Publication Number Publication Date
CN105441608A true CN105441608A (en) 2016-03-30

Family

ID=55552230

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410503489.4A CN105441608A (en) 2014-09-25 2014-09-25 Coal injection nitrogen recovery device and process

Country Status (1)

Country Link
CN (1) CN105441608A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105695648A (en) * 2016-04-12 2016-06-22 中冶赛迪工程技术股份有限公司 Pressure balance control method and device for blast furnace coal injection system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201367434Y (en) * 2009-03-16 2009-12-23 石如松 Coal injection and nitrogen conservation device for blast furnaces
CN101746606A (en) * 2009-12-22 2010-06-23 中冶南方工程技术有限公司 Gas recovery method for multi-tank positive pressure gas delivery system
CN203393169U (en) * 2013-07-09 2014-01-15 林俊贤 Nitrogen recovery device of blast furnace coal injection system
CN204198755U (en) * 2014-09-25 2015-03-11 鞍钢股份有限公司 A kind of coal powder injection nitrogen gas recovering apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201367434Y (en) * 2009-03-16 2009-12-23 石如松 Coal injection and nitrogen conservation device for blast furnaces
CN101746606A (en) * 2009-12-22 2010-06-23 中冶南方工程技术有限公司 Gas recovery method for multi-tank positive pressure gas delivery system
CN203393169U (en) * 2013-07-09 2014-01-15 林俊贤 Nitrogen recovery device of blast furnace coal injection system
CN204198755U (en) * 2014-09-25 2015-03-11 鞍钢股份有限公司 A kind of coal powder injection nitrogen gas recovering apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105695648A (en) * 2016-04-12 2016-06-22 中冶赛迪工程技术股份有限公司 Pressure balance control method and device for blast furnace coal injection system

Similar Documents

Publication Publication Date Title
CN202921578U (en) Removal device for X-ray foreign object detector
CN101892336A (en) Coal-gas recovering process and device of charging, equalizing and bleeding of blast furnace
CN102620057B (en) Pipe arrangement method and pipe arrangement device for pipe gallery
CN101476004B (en) Complete clean gas pressure equalizing method and system for blast furnace tank
CN103112720B (en) High pressure conveyance gas recovery method
CN202715630U (en) Surface degreasing and cleaning system of cold-rolled sheet
CN203678781U (en) Dust-removal pipeline cleaning system
CN104847405B (en) A kind of vertical sand warehouse geomantic omen two-stage timesharing is around wall slurry making system and its application method
CN202330180U (en) Pressure test device
CN205167233U (en) Mixer feed bin structure and mixer thereof
CN102173346A (en) Environment-friendly boiling side lead type sender
CN202962189U (en) Defroster flushing water system of wet-method smoke desulfuration system
CN202912974U (en) Pressure-equalizing coal gas recovery device for furnace roof of blast furnace
CN201916153U (en) Timing water drainage device of air compressor
CN204051798U (en) The online ball adding device of a kind of coal pulverizer
CN102878822A (en) Device and method for purifying and recycling furnace gas of hermetic ore smelting furnace
CN102337364A (en) Device for recovering coal gas in equalizing and relieving process of furnace top of blast furnace
CN202348323U (en) Coal mine gas drainage drill combination hole-main pipe hole linkage structure
CN102864257A (en) Pressure-equalizing and bleeding method for injecting furnace roof tank coal gas by using high-pressure gas
CN205382183U (en) Buggy jetting pressure release returns whitewashed system
CN207077461U (en) O-volt protection vacuum suction system and the handling device based on the system
CN106975889A (en) A kind of pipeline docking facilities for sewage disposal
CN205170903U (en) Converter gas chamber parallel operation system
CN202465752U (en) Dry process dust removing device of blast furnace gas
CN205014397U (en) A multicomputer intercommunication system for improving economic nature of power plant's environmental protection reduction of discharging facility

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20160330

RJ01 Rejection of invention patent application after publication