CN205435462U - A solid sulphur structure of desulphurization of exhaust gas for cement industry - Google Patents

A solid sulphur structure of desulphurization of exhaust gas for cement industry Download PDF

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Publication number
CN205435462U
CN205435462U CN201620231647.XU CN201620231647U CN205435462U CN 205435462 U CN205435462 U CN 205435462U CN 201620231647 U CN201620231647 U CN 201620231647U CN 205435462 U CN205435462 U CN 205435462U
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China
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cement
conveyance conduit
spray gun
pipeline
kiln tail
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CN201620231647.XU
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Chinese (zh)
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刘瑞芝
陶从喜
彭学平
孙于龙
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Tianjin Cement Industry Design and Research Institute Co Ltd
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Tianjin Cement Industry Design and Research Institute Co Ltd
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Abstract

The utility model discloses a solid sulphur structure of desulphurization of exhaust gas for cement industry, including pipeline, pipeline's upper end and cement manufacture line kiln tail decomposition system's play tuber pipe in advance link to each other, pipeline's lower extreme is free air intake pipeline's lower part is equipped with the feed inlet, feed inlet and cement manufacture line kiln tail decomposition system's discharging pipe in advance link to each other the last spray gun that is connected with of pipeline, the spray gun is equipped with the delivery pipe be equipped with the flow control part on the delivery pipe, the export of spray gun is located the top of feed inlet. The utility model discloses the investment cost is low: do not need to go up again one set of other equipment, saved a large amount of investments, it is with low costs: purchase products such as sulphur -fixing agent outside not needing, saved the cost greatly. Energy saving consumed the festival: just meet a depiler valve from the discharging pipe, what depiler valve drew forth is hot material, and does not take away hot -blastly, has saved the energy consumption.

Description

The solid sulfur structure of a kind of exhuast gas desulfurization for cement industry
Technical field
This utility model relates to the solid sulfur structure of a kind of exhuast gas desulfurization, particularly to the solid sulfur structure of a kind of exhuast gas desulfurization for cement industry.
Background technology
Currently, limestone is the main raw material(s) in cement plant, and in the limestone that most of cement plant uses, sulfur content is the lowest, does not results in SO2Exceed standard.But along with restriction and the reduction of grade of limestone region, some cement plant has to use high-sulfur limestone, and its sulfur content is 0.2%-2.0%, causes SO in cement kiln flue gas2Concentration of emission severe overweight (200-4000mg/Nm3).According to SO in relevant national standard " bulletin about performing the special emission limit of atmosphere pollution ", (Environmental Protection Department announce 2012 No. 14), " cement industry atmosphere pollutants emission standards " (GB4915-2013), " cement kiln synergic processing waste pollution controls standard " (GB30485-2013) regulation cement kiln flue gas2Concentration of emission≤200mg/Nm3, unit product discharge capacity need to be less than 0.6kg/t.SO in some provincial standard (such as Guangdong Province) " cement industry enterprise atmosphere pollutants emission standards " (DB44/818-2010) regulation cement kiln flue gas2Concentration≤100mg/Nm3.Therefore, solve cement plant and cause SO owing to raw material sulfur-bearing is high2Discharge high problem, very urgent to reduce environmental pollution.
Research to flue gas desulfurization sulfur solidifying technique, the most existing many reports, but these researchs are mainly directed towards electric power and coal, metallurgy industry, it is adaptable to and the flue gas desulfurization sulfur solidifying technique of cement industry is relatively fewer.Along with environmental pollution, haze problem are increasingly severe, cement industry waste gas emission standard is more and more higher, and a lot of province ,city and areas have put into effect the SO for cement plant2Discharge standard.At present, the desulfurization technology that domestic metallurgy industry uses mainly has limestone-gypsum method, ammonia process, magnesium oxide method, seawater method etc..The flue gas desulfurization technique that cement plant uses both at home and abroad mainly has D-SOx cyclone system, adds Calx, wet gas scrubbing appts method etc., but all there is the problem that desulfuration efficiency is low, equipment investment big or operating cost is high.
Summary of the invention
This utility model provides a kind of exhuast gas desulfurization for cement industry solid sulfur structure for solving technical problem present in known technology, and this structure is not only able to solve cement plant and causes SO due to raw material sulfur-bearing height2Discharge high problem, and equipment investment is few, operating cost is low.
This utility model is adopted the technical scheme that by solving technical problem present in known technology: sulfur structure is consolidated in a kind of exhuast gas desulfurization for cement industry, including conveyance conduit, the upper end of described conveyance conduit is connected with the discharge pipe of cement producing line kiln tail precalcining system, the lower end of described conveyance conduit is free air inlet, be provided with charging aperture in the bottom of described conveyance conduit, described charging aperture is connected with the discharge nozzle of cement producing line kiln tail precalcining system;Connecting on described conveyance conduit has spray gun, described spray gun to be provided with feed pipe, is provided with flow regulating part on described feed pipe, and the outlet of described spray gun is positioned at the top of described charging aperture.
Described conveyance conduit uses U-shape structure, and described free air inlet is horizontally disposed with, and is provided with ash bucket, is provided with ash discharging hole in the bottom of described ash bucket, is provided with manually gate valve on described ash discharging hole on described conveyance conduit below the turning of described free air inlet.
Being provided with seasoning spreading box on described charging aperture, described seasoning spreading box is connected with material distributing valve by pipeline, and described material distributing valve is connected with the discharge nozzle of cement producing line kiln tail precalcining system.
Described flow regulating part includes that manually-operated gate and flow valve, described flow valve are positioned at the downstream of described manually-operated gate.
This utility model has the advantage that with good effect:
1) investment cost is low: need not go up a set of other equipment again, and additional equipment is a set of digestion reaction airduct, water injection system and auxiliary device (ash bucket, manually gate valve etc.), saves great amount of investment.
2) low cost: need not the products such as outsourcing sulphur-fixing agent, only need to connect a material distributing valve at discharge nozzle, and the thermal material (being mainly composed of CaO) that material distributing valve is drawn generates Ca (OH) with the water droplet hybrid reaction of the atomization of spray gun ejection2It is used as the solid sulfur product of desulfurization, is greatly saved cost.
3) saving energy consumption: simply connect a material distributing valve at discharge nozzle, what material distributing valve was drawn is thermal material (being mainly composed of CaO), and does not take away hot blast, saves energy consumption.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1, the discharge pipe of cement producing line kiln tail precalcining system, 2, conveyance conduit, 3, level V cyclone cylinder, 4, the discharge nozzle of cement producing line kiln tail precalcining system, 5, material distributing valve, 6, seasoning spreading box, 7, manually gate valve, 8, ash bucket, 9, free air inlet, 10, spray gun, 11, feed pipe, 12, manually-operated gate, 13, flow valve, 14, second level cyclone cylinder, 15, high-temperature blower.
Detailed description of the invention
For summary of the invention of the present utility model, feature and effect can be further appreciated that, hereby enumerate following example, and it be as follows to coordinate accompanying drawing to describe in detail:
Refer to Fig. 1, the solid sulfur structure of a kind of exhuast gas desulfurization for cement industry, including conveyance conduit 2, the upper end of described conveyance conduit 2 is connected with the discharge pipe 1 of cement producing line kiln tail precalcining system, the lower end of described conveyance conduit 2 is free air inlet 9, be provided with charging aperture in the bottom of described conveyance conduit 2, described charging aperture is connected with the discharge nozzle 4 of cement producing line kiln tail precalcining system;Connecting on described conveyance conduit 2 has spray gun 10, described spray gun 10 to be provided with feed pipe 11, is provided with flow regulating part on described feed pipe 11, and the outlet of described spray gun 10 is positioned at the top of described charging aperture.
In the present embodiment, cement producing line kiln tail precalcining system is provided with five-stage whirlwind cylinder, the discharge pipe of second level cyclone cylinder 14 is connected with high-temperature blower 15, the discharge pipe of second level cyclone cylinder 14 is exactly the discharge pipe 1 of cement producing line kiln tail precalcining system, and the discharge nozzle of level V cyclone cylinder 3 is exactly the discharge nozzle 4 of cement producing line kiln tail precalcining system.Described conveyance conduit 2 uses U-shape structure, described free air inlet 9 is horizontally disposed with, described conveyance conduit 2 is provided with ash bucket 8 below the turning of described free air inlet 9, is provided with ash discharging hole in the bottom of described ash bucket 8, described ash discharging hole is provided with manually gate valve 7.Being provided with seasoning spreading box 6 on described charging aperture, described seasoning spreading box 6 is connected with material distributing valve 5 by pipeline, and described material distributing valve 5 is connected with the discharge nozzle 4 of cement producing line kiln tail precalcining system.Described flow regulating part includes that manually-operated gate 12 and flow valve 13, described flow valve 13 are positioned at the downstream of described manually-operated gate 12.
Operation principle of the present utility model:
The thermal material drawn from the discharge nozzle 4 of cement producing line kiln tail precalcining system is up under the graviational interaction of high-temperature blower 15, and high-temperature blower 15 air quantity can be controlled.Water droplet hybrid reaction through the atomization of spray gun 10 ejection generates Ca (OH)2, the injection flow rate of spray gun 10 can be mediated according to the load of seasoning spreading box 6.Ca(OH)2At the discharge pipe 1 of up arrival cement producing line kiln tail precalcining system, with SO therein2React, generate CaSO4, CaSO4In second level cyclone cylinder 14 descending, finally arrive clinkering zone in kiln, be cured in grog under the high temperature action of 1450 DEG C.When conveyance conduit 2 having dust stratification and falling into ash bucket 8, open manually gate valve 7 and carry out clearing up.
Although preferred embodiment of the present utility model being described above in conjunction with accompanying drawing; but this utility model is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematically; it is not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; in the case of without departing from this utility model objective and scope of the claimed protection, it is also possible to make a lot of form, within these belong to protection domain of the present utility model.

Claims (4)

1. the solid sulfur structure of the exhuast gas desulfurization for cement industry, it is characterized in that, including conveyance conduit, the upper end of described conveyance conduit is connected with the discharge pipe of cement producing line kiln tail precalcining system, the lower end of described conveyance conduit is free air inlet, it is provided with charging aperture in the bottom of described conveyance conduit, described charging aperture is connected with the discharge nozzle of cement producing line kiln tail precalcining system, described conveyance conduit connects and has spray gun, described spray gun is provided with feed pipe, described feed pipe is provided with flow regulating part, the outlet of described spray gun is positioned at the top of described charging aperture.
The most according to claim 1 for the solid sulfur structure of exhuast gas desulfurization of cement industry, it is characterized in that, described conveyance conduit uses U-shape structure, described free air inlet is horizontally disposed with, described conveyance conduit is provided with ash bucket below the turning of described free air inlet, it is provided with ash discharging hole in the bottom of described ash bucket, described ash discharging hole is provided with manually gate valve.
The most according to claim 1 for the solid sulfur structure of exhuast gas desulfurization of cement industry, it is characterized in that, being provided with seasoning spreading box on described charging aperture, described seasoning spreading box is connected with material distributing valve by pipeline, and described material distributing valve is connected with the discharge nozzle of cement producing line kiln tail precalcining system.
The most according to claim 1 for the solid sulfur structure of exhuast gas desulfurization of cement industry, it is characterised in that described flow regulating part includes that manually-operated gate and flow valve, described flow valve are positioned at the downstream of described manually-operated gate.
CN201620231647.XU 2016-03-23 2016-03-23 A solid sulphur structure of desulphurization of exhaust gas for cement industry Active CN205435462U (en)

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CN201620231647.XU CN205435462U (en) 2016-03-23 2016-03-23 A solid sulphur structure of desulphurization of exhaust gas for cement industry

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105771618A (en) * 2016-03-23 2016-07-20 天津水泥工业设计研究院有限公司 Waste gas desulfurization and sulfur fixation structure for cement industry

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105771618A (en) * 2016-03-23 2016-07-20 天津水泥工业设计研究院有限公司 Waste gas desulfurization and sulfur fixation structure for cement industry

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