CN101007954A - Coke oven wet method smoke prevention and dust control process, and equipment thereof - Google Patents
Coke oven wet method smoke prevention and dust control process, and equipment thereof Download PDFInfo
- Publication number
- CN101007954A CN101007954A CN 200610042357 CN200610042357A CN101007954A CN 101007954 A CN101007954 A CN 101007954A CN 200610042357 CN200610042357 CN 200610042357 CN 200610042357 A CN200610042357 A CN 200610042357A CN 101007954 A CN101007954 A CN 101007954A
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- Prior art keywords
- dust
- fly
- ash separator
- dedusting
- pipeline
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- 239000000571 coke Substances 0.000 title claims abstract description 78
- 239000000428 dust Substances 0.000 title claims abstract description 65
- 239000000779 smoke Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 37
- 230000002265 prevention Effects 0.000 title claims abstract description 20
- 238000010791 quenching Methods 0.000 claims abstract description 25
- 230000000171 quenching effect Effects 0.000 claims abstract description 25
- 230000000694 effects Effects 0.000 claims abstract description 11
- 238000007599 discharging Methods 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 239000010881 fly ash Substances 0.000 claims description 68
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 61
- 239000007921 spray Substances 0.000 claims description 38
- 238000005406 washing Methods 0.000 claims description 24
- 239000003500 flue dust Substances 0.000 claims description 21
- 238000011010 flushing procedure Methods 0.000 claims description 17
- 238000004062 sedimentation Methods 0.000 claims description 17
- 238000003860 storage Methods 0.000 claims description 14
- 238000013459 approach Methods 0.000 claims description 13
- 238000005507 spraying Methods 0.000 claims description 8
- 230000001939 inductive effect Effects 0.000 claims description 5
- 210000001503 joint Anatomy 0.000 claims description 5
- 238000000746 purification Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 239000003595 mist Substances 0.000 claims description 2
- 230000001314 paroxysmal effect Effects 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 abstract 1
- 239000003034 coal gas Substances 0.000 abstract 1
- 238000001556 precipitation Methods 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 15
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 9
- 208000028659 discharge Diseases 0.000 description 8
- FMMWHPNWAFZXNH-UHFFFAOYSA-N Benz[a]pyrene Chemical compound C1=C2C3=CC=CC=C3C=C(C=C3)C2=C2C3=CC=CC2=C1 FMMWHPNWAFZXNH-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000809 air pollutant Substances 0.000 description 4
- 231100001243 air pollutant Toxicity 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000013618 particulate matter Substances 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- 230000007115 recruitment Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
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Abstract
The invention relates to coke oven wet smoke gas removal process and the device, comprising burning smoke gas in smoke prevention and dust control car, cooling and removing dust, feeding into coke quenching tower and discharging. It is characterized in that: a pipeline dust cleaner is equipped between smoke prevention and dust control car and coke quenching tower to clean dust, one end of dust collecting cover is connected to coke quenching car, the other end is connected to smoke prevention and dust control car, the smoke prevention and dust control car is on the top of coke oven, and is connected with smoke gas inlet of pipeline dust cleaner through butt-joint port. The invention is characterized in that it realizes three- section multi-stage dust cleaning, the effect reaches country second- class standard, the device cost and operation cost are low, it reduces 16 workers, the device operating loading is only 10- 205 of that of dry precipitation, there is no black smoke and waste coal gas discharge near machine side, coke side and oven top, and the collection of paroxysmal smoke gas reaches over 99%.
Description
Technical field
The invention belongs to pit kiln smoke and dust treatment, environmental protection technical field, be specifically related to a kind of coke oven smoke prevention and dust control technology and equipment thereof.
Background technology
Coke oven production is open work, in the discharging of the coke, coalingging production process, the discharging of a large amount of paroxysmal flue dust and raw gas is arranged, without the direct emptying of acquisition process, or smoke medicining dust-removing effect is not good, all can worsen production environment, and the neighboring area atmospheric environment is caused the severe atmospheric pollution.At present, domestic coke oven smoke eliminating dust removing mainly adopts smoke elimination car and ground station for dust removal dry-method bag-type dust collecting technology: the smoke elimination car does not have the ground station for dust removal smoke prevention and dust control, smoke medicining dust-removing effect is general, can only reach the Air Pollutant Emission grade III Standard, the mechanical coke oven smoke discharging secondary standard of the national regulation that lagged behind; With smoke elimination car and ground station for dust removal dry method smoke prevention and dust control, dust removing effects reaches national secondary discharge standard, it is the necessary supporting environmental protection facility of present national requirements coke oven, but, because investment big (ten thousand yuan of 3500-5000), occupation of land is many, the running cost height, and domestic former coke-oven plant, newly-built coke-oven plant fail comprehensive supporting use.
Summary of the invention
Technical problem to be solved by this invention is in order to overcome above-mentioned defective, a kind of smoke medicining dust-removing effect ideal to be provided, less investment, coke oven wet method smoke prevention and dust control process that running cost is low and equipment thereof.
Coke oven wet method smoke prevention and dust control process of the present invention comprises: comprise that the dust that produces in the process of the discharging of the coke, coaling at first carries out one section cooling dedusting, enters coke quenching tower dedusting discharge by dust-removing vehicle, it is characterized in that: between dust-removing vehicle and coke quenching tower dedusting, set up the pipeline fly-ash separator and carry out purifying and dedusting.
The dedusting of pipeline fly-ash separator comprises: also do not have settled dust to drench in the dust separating flue dust of will once lowering the temperature and make its sedimentation, by the spray water mist wash rinse, the dust that arrives terminal fly-ash separator through the dedusting of pipeline fly-ash separator carries out baffling sedimentation, spraying and dedusting, carries out two sections purifying and dedustings.The flue dust of two sections purifying and dedustings of pipeline fly-ash separator passes through the coke quenching tower dedusting again, carries out three sections purifying and dedustings and discharges.
The flue dust that enters dust-removing vehicle through one section purifying and dedusting such as secondary combustion, spraying and dedusting, sedimentation filtration after, under the effect of induced draft fan, enter the pipeline fly-ash separator by the gas approach door, flue dust sedimentation successively in the pipeline fly-ash separator realizes the primary purification dedusting; When the flushing water nozzle in flue dust arrives the pipeline pipeline of dust collector, spray washing nozzle location, draw up the water smoke that water column that spray water to pipe flushing water nozzle forms and spray washing nozzle form by water pump from aqua storage tank, to also not have settled dust to drench in the flue dust and make its sedimentation, realize the secondary-cleaned dedusting, and effusive water washes away settled dust in the pipe flushing water nozzle, enters aqua storage tank from the draining slag-drip opening; When flue dust arrives terminal fly-ash separator, pass through the spraying and dedusting of baffling sedimentation, spray water nozzle and washing water nozzle endways in the fly-ash separator, realize three times purifying and dedusting.
The air inducing amount of induced draft fan is at 3-15 ten thousand M
3/ H.
Realize the equipment of above-mentioned coke oven wet method smoke prevention and dust control process, comprise quenching car, coke oven, coke guide, dust gathering arrester, dust-removing vehicle and coke quenching tower, it is characterized in that: between dust-removing vehicle and coke quenching tower, set up the pipeline fly-ash separator, dust gathering arrester one end links to each other with quenching car 1 butt joint, the other end links to each other with coke guide 3 butt joints, dust-removing vehicle is positioned at the top of coke oven, and dust-removing vehicle is connected with the gas approach door of pipeline fly-ash separator by butt tube.
The pipeline fly-ash separator comprises fly-ash separator body, spray equipment, induced draft fan, it is characterized in that: the fly-ash separator body is a pipe-like, and spray equipment is arranged in the pipeline, and induced draft fan is arranged on the exit end of pipe-like fly-ash separator body.Pipe-like fly-ash separator body is a bending, divides multistage, combines by elbow, and entrance end is provided with a plurality of gas approach doors, and exit end links to each other with induced draft fan by terminal fly-ash separator.Spray equipment comprises pipe flushing water nozzle, spray washing nozzle, water pump, draining slag-drip opening, aqua storage tank, and the draining slag-drip opening is installed in the top of aqua storage tank, and water pump links to each other with flushing water nozzle, spray washing nozzle.
In the terminal fly-ash separator traverse baffle is set, the top is provided with spray water nozzle and washing water nozzle.
Compared with prior art, the beneficial effect that coke oven wet method smoke prevention and dust control process of the present invention has is: owing between former coke oven dust equipment dust-removing vehicle and coke quenching tower dedusting, set up the pipeline fly-ash separator and carry out purifying and dedusting.This pipeline fly-ash separator body entrance end links to each other by butt tube with dust-removing vehicle, exit end places in the coke quenching tower by terminal fly-ash separator, induced draft fan, realize three sections stage purification dedustings, smoke medicining dust-removing effect reaches national grade ii standard, and equipment manufacturing cost is low, working cost is few, can realize that the post is unattended, reduces post recruitment 16 people; Equipment operation living load only is the 10-20% of dry method dust.Pipe-like fly-ash separator body is because exit end is provided with induced draft fan in addition, coke oven discharges of the coke, when coalingging, at first open induced draft fan, make and form negative pressure in the pipe-like fly-ash separator body, a large amount of paroxysmal raw gas are after dust-removing vehicle is derived, the pipeline fly-ash separator can improve derivation efficient on the one hand, can play the temporarily stored effect simultaneously, has avoided flue dust to leak.Pusher side, coke side, furnace roof working district do not have the discharging of black smoke and raw gas like this, and paroxysmal dust acquisition process reaches more than 99%.Having realized that really coking plant is dustless, environmental protection production, is national grade ii standard and pit kiln Air Pollutant Emission detected result of the present invention as following table 1-2:
Table 1: pit kiln Air Pollutant Emission national standard
| Levels of the standard | Secondary | Three grades | ||||
| Pollutent | Particulate matter | Benzene solvend (BSO) | Benzo [a] pyrene (B[a] P) | Particulate matter | Benzene solvend (BSO) | Benzo [a] pyrene (B[a] F |
| Emission standard value (mg/m 3) | 2.5 | 0.60 | 0.0025 | 3.5 | 0.80 | 0.004 |
Table 2: detect pit kiln Air Pollutant Emission result of the present invention through environmental administration
| Pollutent | Particulate matter | Benzene solvend (BSO) | Benzo [a] pyrene (B[a] P) |
| Discharge value (mg/m 3) | ≤2.3 | ≤0.57 | ≤0.0022 |
Coke oven efficiently smoke fly-ash separator smoke medicining dust-removing effect of the present invention reaches national grade ii standard, and equipment manufacturing cost is low, and working cost is few, can realize that the post is unattended, reduces post recruitment 16 people; Equipment operation living load only is the 10-20% of dry method dust.
Description of drawings
Fig. 1 is a process flow sheet of the present invention;
Fig. 2 is a structural representation of the present invention;
Fig. 3 is the structural representation of fly-ash separator of the present invention.
Wherein: wherein: 1 quenching car, 2 coke ovens, 3 coke guides, 4 dust gathering arresters, 5 dust-removing vehicles, 6 pipe-like fly-ash separator bodies, 7 gas approach doors, 8 pipe flushing water nozzles, 9 spray washing nozzles, 10 water pumps, 11 draining slag-drip openings, 12 aqua storage tanks, 13 fly-ash separators, 14 induced draft fans, 15 coke quenching towers, 16 gas approachs, 17 spray water nozzles, 18 washing water nozzles, 19 water inlet pipes, 20 dividing plates, 21 exhanst gas outlets, 22 traverse baffles, 23 sewage draining exits.
Embodiment
Embodiment 1:
As Figure 1-3, this coke oven efficiently smoke fly-ash separator is made up of quenching car 1, coke oven 2, coke guide 3, dust gathering arrester 4, dust-removing vehicle 5, pipe-like fly-ash separator body 6, gas approach door 7, pipe flushing water nozzle 8, spray washing nozzle 9, water pump 10, draining slag-drip opening 11, aqua storage tank 12, fly-ash separator 13, induced draft fan 14, coke quenching tower 15, gas approach 16, spray water nozzle 17, washing water nozzle 18, water inlet pipe 19, dividing plate 20, exhanst gas outlet 21, traverse baffle 22, sewage draining exit 23.Fly-ash separator body 6 is a pipe-like, pipe-like fly-ash separator body 6 divides five sections for bending, first and third, five sections is parallel-segment, second section is vertical section, the 4th section is the slope section, first and second segment pipe is combined by elbow, and other sections can make up by elbow, also can directly be welded into desired shape.Entrance end is provided with a plurality of gas approach doors 7.Spray equipment is arranged in the 3rd segment pipe, spray equipment comprises pipe flushing water nozzle 8, spray washing nozzle 9, water pump 10, draining slag-drip opening 11, aqua storage tank 12, draining slag-drip opening 11 is installed in the top of aqua storage tank 12, and water pump 10 links to each other with flushing water nozzle 8, spray washing nozzle 9.Induced draft fan 14 is arranged in the exit end coke quenching tower 15 of pipe-like fly-ash separator body 6.During use, gas approach door 7 is connected with dust-removing vehicle 5 by butt tube, and exit end links to each other with last step dust-removing coke quenching tower 15 by terminal fly-ash separator 13, induced draft fan 14.Set up spray water nozzle 17 and washing water nozzle 18 in the terminal fly-ash separator 13.
Coke oven wet method smoke prevention and dust control process, coal pushing and charging car discharges of the coke, coke guide, dust hood 4, coaling, coaling and link to each other with dust-removing vehicle 5 butt joints with dust hood 4, flue dust at first carries out one section cooling dedusting by dust-removing vehicle 5, the flue dust that enters dust-removing vehicle 5 is through secondary combustion, spraying and dedusting, behind one section purifying and dedusting such as sedimentation filtration, enter pipeline fly-ash separator 6 by gas approach door 7, finish two sections purifying and dedustings at the effect lower edge of induced draft fan 14 pipeline fly-ash separator 6, in the pipeline fly-ash separator, mainly finish purifying and dedusting three times, (1) dust sedimentation successively in the pipeline fly-ash separator realizes the primary purification dedusting; (2) during the position of the flushing water nozzle 8 in flue dust arrives this pipeline of dust collector, spray washing nozzle 9, draw up spray water to pipe flushing water nozzle 8 and spray washing nozzle 9 by water pump 10 from aqua storage tank 12 and form water smoke, to also not have settled dust to drench in the flue dust and make its sedimentation, realize the secondary-cleaned dedusting, and effusive water washes away settled dust in the pipe flushing water nozzle 6, enters aqua storage tank 12 from draining slag-drip opening 11; (3) when flue dust arrives terminal fly-ash separator 13, endways in the fly-ash separator 13 by the spraying and dedustings of baffling sedimentation, spray water nozzle 17 and washing water nozzle 18, realize three times purifying and dedusting; Then enter coke quenching tower 15, carry out last spray washing dedusting and discharge by induced draft fan 14.
Operating process is as follows: (1) opens induced draft fan 14 earlier, makes and forms negative pressure in the coke oven 2; (2) coke in the coke oven 2 is released, in coke oven 2, coaling simultaneously; (3) dust of above-mentioned generation is through dust-removing vehicle 5 cooling dedustings; (4) above-mentioned waste gas sedimentation in pipeline fly-ash separator 4, spray; (5) above-mentioned waste gas is by fly-ash separator 4 scrubbing dust collections; (6) above-mentioned waste gas imports coke quenching tower 15 discharges by induced draft fan 14.Coke oven 2 is selected small scale coke oven for use, and the air inducing amount of induced draft fan 14 is made as 30,000 M
3/ H.
Coke oven is selected middle Formed Coke Furnace for use, and the air inducing amount of induced draft fan 14 is made as 90,000 M
3/ H.All the other are with embodiment 1.
Coke oven is selected capacity coke oven for use, and the air inducing amount of induced draft fan 14 is made as 150,000 M
3/ H.All the other are with embodiment 1.
Set up spray water nozzle 17 and washing water nozzle 18 in the terminal fly-ash separator 13.The cigarette that enters in the terminal fly-ash separator 13 is removed further purifying and dedusting.
Claims (10)
1, coke oven wet method smoke prevention and dust control process, comprise that the dust that produces in the process of the discharging of the coke, coaling at first carries out one section cooling dedusting, enters coke quenching tower dedusting discharge by dust-removing vehicle, it is characterized in that: between dust-removing vehicle and coke quenching tower dedusting, set up the pipeline fly-ash separator and carry out purifying and dedusting.
2, coke oven wet method smoke prevention and dust control process according to claim 1, it is characterized in that: the dedusting of pipeline fly-ash separator comprises: also do not have settled dust to drench in the dust separating flue dust of will once lowering the temperature and make its sedimentation, by the spray water mist wash rinse, the dust that arrives terminal fly-ash separator through the dedusting of pipeline fly-ash separator carries out baffling sedimentation, spraying and dedusting, carries out two sections purifying and dedustings.
3, coke oven wet method smoke prevention and dust control process according to claim 1 is characterized in that: the flue dust of two sections purifying and dedustings of pipeline fly-ash separator passes through the coke quenching tower dedusting again, carries out three sections purifying and dedustings and discharges.
4, coke oven wet method smoke prevention and dust control process according to claim 2, it is characterized in that: the flue dust that enters dust-removing vehicle through one section purifying and dedusting such as secondary combustion, spraying and dedusting, sedimentation filtration after, under the effect of induced draft fan, enter the pipeline fly-ash separator by the gas approach door, flue dust is sedimentation successively in the pipeline fly-ash separator, realizes the primary purification dedusting; When the flushing water nozzle in flue dust arrives the pipeline pipeline of dust collector, spray washing nozzle location, draw up the water smoke that water column that spray water to pipe flushing water nozzle forms and spray washing nozzle form by water pump from aqua storage tank, to also not have settled dust to drench in the flue dust and make its sedimentation, realize the secondary-cleaned dedusting, and effusive water washes away settled dust in the pipe flushing water nozzle, enters aqua storage tank from the draining slag-drip opening; When flue dust arrives terminal fly-ash separator, pass through the spraying and dedusting of baffling sedimentation, spray water nozzle and washing water nozzle endways in the fly-ash separator, realize three times purifying and dedusting.
5, coke oven wet method smoke prevention and dust control process according to claim 4 is characterized in that: the air inducing amount of induced draft fan is at 3-15 ten thousand M
3/ H.
6, the equipment of coke oven wet method smoke prevention and dust control process according to claim 1, it is characterized in that: comprise coke oven, dust gathering arrester, dust-removing vehicle and coke quenching tower, it is characterized in that: between dust-removing vehicle (5) and coke quenching tower (15), set up pipeline fly-ash separator (6), dust gathering arrester (4) one ends link to each other with coke oven (2) butt joint, the other end links to each other with coke guide (3) butt joint, dust-removing vehicle (5) is positioned at the top of coke oven (2), and dust-removing vehicle (5) is connected with the gas approach door (7) of pipeline fly-ash separator (6) by butt tube.
7, equipment according to claim 6, it is characterized in that: the pipeline fly-ash separator comprises fly-ash separator body, spray equipment, induced draft fan, it is characterized in that: fly-ash separator body (6) is pipe-like, spray equipment is arranged in the pipeline, and induced draft fan (14) is arranged on the exit end of pipe-like fly-ash separator body (6).
8, coke oven efficiently smoke fly-ash separator according to claim 7 is characterized in that: pipeline fly-ash separator body (6) is a bending.
9, coke oven efficiently smoke fly-ash separator according to claim 8, it is characterized in that: pipeline fly-ash separator (6) divides multistage, combine by elbow, entrance end is provided with a plurality of gas approach doors (7), exit end links to each other with induced draft fan (14) by terminal fly-ash separator (13), in the terminal fly-ash separator (13) traverse baffle (22) is set, the top is provided with spray water nozzle (17) and washing water nozzle (18).
10, coke oven efficiently smoke fly-ash separator according to claim 9, it is characterized in that: spray equipment comprises pipe flushing water nozzle (8), spray washing nozzle (9), water pump (10), draining slag-drip opening (11), aqua storage tank (12), draining slag-drip opening (11) is installed in the top of aqua storage tank (12), and water pump (10) links to each other with flushing water nozzle (8), spray washing nozzle (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610042357A CN100590175C (en) | 2006-01-26 | 2006-01-26 | Coke oven wet method smoke prevention and dust control process, and equipment thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610042357A CN100590175C (en) | 2006-01-26 | 2006-01-26 | Coke oven wet method smoke prevention and dust control process, and equipment thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101007954A true CN101007954A (en) | 2007-08-01 |
| CN100590175C CN100590175C (en) | 2010-02-17 |
Family
ID=38696618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610042357A Active CN100590175C (en) | 2006-01-26 | 2006-01-26 | Coke oven wet method smoke prevention and dust control process, and equipment thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100590175C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101451068B (en) * | 2007-12-05 | 2012-07-25 | 山西同世达煤化工集团有限公司 | Smoke eliminating and dust collecting device for coal-charging pusher machine |
| CN101864321B (en) * | 2009-11-25 | 2013-05-15 | 张建中 | Coke oven wet method dedusting station |
| CN107051079A (en) * | 2017-03-22 | 2017-08-18 | 王琳荣 | A kind of factory's carbon monoxide waste gas is without fume treating device |
-
2006
- 2006-01-26 CN CN200610042357A patent/CN100590175C/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101451068B (en) * | 2007-12-05 | 2012-07-25 | 山西同世达煤化工集团有限公司 | Smoke eliminating and dust collecting device for coal-charging pusher machine |
| CN101864321B (en) * | 2009-11-25 | 2013-05-15 | 张建中 | Coke oven wet method dedusting station |
| CN107051079A (en) * | 2017-03-22 | 2017-08-18 | 王琳荣 | A kind of factory's carbon monoxide waste gas is without fume treating device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100590175C (en) | 2010-02-17 |
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Owner name: SHANDONG TIEXIONG METALLURGICAL TECHNOLOGY CO., LT Free format text: FORMER NAME: ZOUPING TIEXIONG COKING + CHEMICAL CORPORATION |
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Address after: 256200 north of Zouping County, Binzhou City, Shandong Province Patentee after: SHANDONG TIEXIONG METALLURGY TECHNOLOGY CO.,LTD. Address before: 256200 north of Zouping County, Binzhou City, Shandong Province Patentee before: ZOUPING TIEXIONG COKING & CHEMICAL Corp. |
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