CN103818902B - Multi-stage oven is adopted to manufacture desulphurization denitration activated coke production technique and production unit - Google Patents
Multi-stage oven is adopted to manufacture desulphurization denitration activated coke production technique and production unit Download PDFInfo
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- CN103818902B CN103818902B CN201410071596.4A CN201410071596A CN103818902B CN 103818902 B CN103818902 B CN 103818902B CN 201410071596 A CN201410071596 A CN 201410071596A CN 103818902 B CN103818902 B CN 103818902B
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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- Y02P20/10—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
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- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The invention discloses a kind of multi-stage oven that adopts and manufacture desulphurization denitration activated coke production technique and production unit, comprise the steps: granulation, raw coal, auxiliary coal and tackiness agent are sent into rolling granulation device roll-in granulation; Roasting hard, the particle of roll-forming is sent into the roasting hard process of mesh-belt drier; By baking the particle firmly processed through mesh-belt drier, charing, activation, oxidation, put into that multi-stage oven carries out carbonizing, activates, oxide treatment; Cooling, sends the particle through multi-stage oven charing, activation, oxide treatment into the cooling of solid-liquid forced action type cooler fast, is sent by the particle cooled through solid-liquid forced action type cooler, obtained desulphurization denitration activation charcoal; Screening, packaging, through screening, packaging, obtained desulphurization denitration activated coke.The present invention completely eliminates with rotary kiln the desulphurization denitration activated coke macroscopic irregularity problem of the desulphurization denitration activated coke production unit production being core manufacturing equipment, has saved industrial land, environmental protection and energy saving Be very effective simultaneously.
Description
Technical field
The present invention relates to environmental technology field, be specifically related to adopt multi-stage oven to manufacture desulphurization denitration activated coke production technique and production unit.
Background technology
Desulfurizing industrial fume denitration tailored version activated coke product system adopts bituminous coal or hard coal to be main raw material, add other complementary, modified coal, and/or solid-state or liquid adhesive, after fully mixing, shaping or the extruded moulding equipment of pelleting is adopted to make the neat particulate state moulding mixture of epigranular, outward appearance, experience the operations such as high temperature (more than 600 DEG C) charing, the activation of water vapour either shallow, rear oxidation again, make the neat particulate product activated coke meeting set technical quality and require.
This activated coke particulate product can be used for the industrial smoke pollutant control systems such as coal-fired plant flue gas, flue gas of glass melting furnace, steelworks furnace flue gas, special dry desulfurization denitration moving-burden bed reactor is adopted to remove continuously the sulfur and nitrogen oxides in flue gas, when in flue gas containing mercury and other heavy metal component and Dioxins and furans organic hypertoxicity pollutent time, this apparatus system also can make it remove in the lump.
Adopt three rotary kiln devices to complete the thermal work steps of desulphurization denitration activated coke, there is following inherent defect:
(1) because charing procedure calls carries out under higher temperature condition, if directly the moulding mixture after extruded moulding is added charing rotary kiln to carry out adding man-hour, very easily " adhesion ", " distortion " after generation moulding mixture particles by heat, cause charing semi-finished granules outward appearance irregular, in application process, cause the Resistance Distribution problem of adsorption bed.Common way is, otherwise take length more than 30 meters extended type internal heat type charing rotary kiln carbonize, make the temperature distribution district " expansion " in burner hearth, moulding mixture lentamente, control heat-up rate carry out within the scope of 5 to 10 DEG C/min charing process; Two cover carbonizing apparatus are adopted to carry out charing processing at middle cold zone (200 to 500 DEG C) and middle high-temperature zone (550 to 700 DEG C) segmentation respectively; In actual production process, net belt type continuous drier is first taked to carry out " roasting hard " process to moulding mixture in addition under 100 to 300 DEG C of temperature condition, and then enter and set up formula charing rotary kiln and carry out the technological method of middle high temperature carbonization process, but significant effect is not produced to the improvement of product appearance.
(2) adopt three cover rotary kiln devices to carry out respectively carbonizing, activating and be oxidized processing, because exhaust gas composition differs greatly, three covers (at least two covers) after-burner must be used to process the tail gas that rotary kiln is discharged respectively, and total floor space of device systems is very large.
(3) the rotary kiln device of charing and activation processing is high due to service temperature, must adopt internal heat type rotary kiln pattern, but internal heat type rotary kiln must inner lining refractory.Up to now, there is no can the precedent that uses in desulphurization denitration activated coke production of the internal heat type rotary kiln that do not come off of steady running more than 2 years, inner lining refractory layer.Therefore take the maintenance of equipment maintenance cost of rotary kiln production desulphurization denitration activated coke very high.And the cracked of air retaining wall refractory materials is irregular state with coming off general, can cause the disorder of the production program (cannot according to the set production program arrange production task), this adopts at present to commonly use one of maximum puzzlement of the desulphurization denitration activated coke production line of rotary kiln production technique.
Summary of the invention
The object of the invention is to solve the problem existing for rotary kiln device production desulphurization denitration activated coke, disclose a kind of multi-stage oven that adopts and manufacture desulphurization denitration activated coke production technique and production unit.
The technical solution adopted in the present invention is:
Adopt multi-stage oven to manufacture desulphurization denitration activated coke production technique, comprise the steps:
A, granulation, send into the granulation of rolling granulation device continuous rolling by raw coal, auxiliary coal and tackiness agent;
B, roasting hard, the particle of roll-forming is sent into the roasting hard process of mesh-belt drier, the tail gas produced in drying process is transported to semidry process desulfurizer;
C, charing, activation, oxidation, put into that multi-stage oven carries out carbonizing, activates, oxide treatment by baking the particle firmly processed through mesh-belt drier, the tail gas produced in charing, activation, oxidising process is sent into after-burner and is used for manufacture high pressure steam to produce high-temperature flue gas;
D, cooling, send the particle through multi-stage oven charing, activation, oxide treatment into solid-liquid forced action type fast and force cooler cooling, sent by the particle cooled through solid-liquid forced action type cooler, obtained desulphurization denitration activation charcoal;
E, screening, packaging, through screening, packaging, obtained desulphurization denitration activated coke.
As preferably, the service temperature of described charing is 550 °-700 °.
As preferably, the service temperature of described activation is 800 °-950 °.
As preferably, the service temperature of described charing is 250 °-450 °.
Realize the desulphurization denitration activated coke production unit that above-mentioned employing multi-stage oven manufactures desulphurization denitration activated coke production technique, comprise rolling granulation device, drying installation, multi-stage oven, refrigerating unit, after-burner, heat recovery steam boiler and bag filter,
Described rolling granulation device is connected with described drying installation;
Described multi-stage oven is connected with after-burner with described drying installation, refrigerating unit respectively;
Described after-burner is connected with described heat recovery steam boiler;
Described heat recovery steam boiler is connected with described bag filter.
As preferably, described drying installation is mesh-belt drier.
The invention has the beneficial effects as follows,
1, the Inherent advantages such as multi-stage oven device each layer burner hearth process operation temperatures accurately can control (can be controlled to ± 5 DEG C of scopes), the temperature rise rate of solid materials can better regulate and control can be given full play to, thoroughly eliminate product appearance defect problem;
2, the charing of (annual capacity can reach 5000 to 30000 tons) desulphurization denitration activated coke in enormous quantities, activation and oxidation production process can be realized in a set of multi-stage oven device, and realize (eliminating hydrocarbon polymer, carbon monoxide and hydrogen components to the thorough burning disposal of combustible components in charing, activation and oxidation link process tail gas in a set of after-burner device, and produce a large amount of heat energy), chimney quantity is also cut to by three chimneys commonly using production line and only uses a chimney.After above measure, produce 30000 tons of total floor spaces of desulphurization denitration activated coke production line can be reduced to the production line adopting production technique of the present invention about 500 ㎡ by 2400 ㎡ of conventional production lines per year for one;
3, different from interior pattern of fever rotary kiln, multi-stage oven is vertical type industrial furnace device, its moving parts is only rake arms and the rake teeth of axis and upper installation thereof, and other all refractory materials is fixed installation, thus exist hardly in operational process refractory materials come off, cracked may.Multi-stage oven apparatus system requires that annual three time-of-weeks that arrange carry out regular maintenance, burner hearth is cleaned and refractory materials inspection, that is, the maintenance of multi-stage oven technological system can be carried out according to both working out a scheme, random generation refractory materials case accident rotary kiln can not be resembled and need to stop in emergency repairing, the set production program is delayed.Therefore when adopting multi-stage oven technological system to produce desulphurization denitration activated coke product, the production program is better than the production line adopting rotary kiln.
4, the present invention propose desulphurization denitration activated coke production technique and production unit, (1) utilize temperature lower than 200 DEG C, flue gas after dedusting carries out roasting hard process to molding mass in net belt type continuous drier, to improve the visual appearance of moulding mixture in the follow-up course of processing, take full advantage of the Lowlevel thermal energy of flue gas; (2) multi-stage oven carbonized moulding mixture, activate and be oxidized in flammable tail gas segmentation introducing after-burner (secondary stove) produced in the course of processing and carry out thorough burning disposal, the high-temperature flue gas produced is used for manufacturing high pressure steam, and drive high-power draft fan device whereby, the electric energy of at least 120 ten thousand kWh can be saved every year; (3) the technique soft water needed for heat recovery steam boiler is introduced into the activation carbon semiproduct pressure cooler that multi-stage oven is divided into, indirect heat transfer makes solid phase prod lower the temperature, the temperature of technique soft water improves simultaneously, enter heat recovery steam boiler manfacturing steam afterwards, fully recycle the Lowlevel thermal energy of solid phase prod.
To sum up, with traditional with rotary kiln be core manufacturing equipment desulphurization denitration activated coke production line compared with, energy-saving effect of the present invention wants much remarkable.
5, with traditional with rotary kiln be core manufacturing equipment desulphurization denitration activated coke production line compared with, the present invention propose with the multi-stage oven technological system desulphurization denitration activated coke production line that is core because equipment intensity is high, discharging point/leading point the quantity of solid materials and gas-phase product greatly reduces (chimney quantity is reduced to one by three of conventional production lines), flue gas pollutant treatment technology system is (by after-burner, waste heat steam boiler blocks dirt device, bag filter, the compositions such as semidry process desulfurizer) to concentrate and efficient, therefore the overall cleaner production effect of production line is more much better than conventional production lines.
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is that employing multi-stage oven of the present invention manufactures desulphurization denitration activated coke production technological process.
Embodiment
In order to deepen the understanding of the present invention, below in conjunction with drawings and Examples, the present invention is further detailed explanation.Following examples only for technical scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
Specific embodiments of the invention are,
Adopt multi-stage oven to manufacture desulphurization denitration activated coke production technique, comprise the steps:
A, granulation, send into the granulation of rolling granulation device continuous rolling by raw coal, auxiliary coal and tackiness agent;
B, roasting hard, the particle of roll-forming is sent into the roasting hard process of mesh-belt drier, the tail gas produced in drying process is transported to semidry process desulfurizer;
C, charing, activation, oxidation, put into that multi-stage oven carries out carbonizing, activates, oxide treatment by baking the particle firmly processed through mesh-belt drier, the tail gas produced in charing, activation, oxidising process is sent into after-burner and is used for manufacture high pressure steam to produce high-temperature flue gas;
D, cooling, send the particle through multi-stage oven charing, activation, oxide treatment into solid-liquid forced action type fast and force cooler cooling, sent by the particle cooled through solid-liquid forced action type cooler, obtained desulphurization denitration activation charcoal;
E, screening, packaging, through screening, packaging, obtained desulphurization denitration activated coke.
As preferably, the service temperature of described charing is 550 °-700 °.
As preferably, the service temperature of described activation is 800 °-950 °.
As preferably, the service temperature of described charing is 250 °-450 °.
Realize the desulphurization denitration activated coke production unit that above-mentioned employing multi-stage oven manufactures desulphurization denitration activated coke production technique, comprise rolling granulation device, drying installation, multi-stage oven, refrigerating unit, after-burner, heat recovery steam boiler and bag filter,
Described rolling granulation device is connected with described drying installation;
Described multi-stage oven is connected with after-burner with described drying installation, refrigerating unit respectively;
Described after-burner is connected with described heat recovery steam boiler;
Described heat recovery steam boiler is connected with described bag filter.
As preferably, described drying installation is mesh-belt drier.
The invention has the beneficial effects as follows,
1, the Inherent advantages such as multi-stage oven device each layer burner hearth process operation temperatures accurately can control (can be controlled to ± 5 DEG C of scopes), the temperature rise rate of solid materials can better regulate and control can be given full play to, thoroughly eliminate product appearance defect problem;
2, the charing of (annual capacity can reach 5000 to 30000 tons) desulphurization denitration activated coke in enormous quantities, activation and oxidation production process can be realized in a set of multi-stage oven device, and realize (eliminating hydrocarbon polymer, carbon monoxide and hydrogen components to the thorough burning disposal of combustible components in charing, activation and oxidation link process tail gas in a set of after-burner device, and produce a large amount of heat energy), chimney quantity is also cut to by three chimneys commonly using production line and only uses a chimney.After above measure, produce 30000 tons of total floor spaces of desulphurization denitration activated coke production line can be reduced to the production line adopting production technique of the present invention about 500 ㎡ by 2400 ㎡ of conventional production lines per year for one;
3, different from interior pattern of fever rotary kiln, multi-stage oven is vertical type industrial furnace device, its moving parts is only rake arms and the rake teeth of axis and upper installation thereof, and other all refractory materials is fixed installation, thus exist hardly in operational process refractory materials come off, cracked may.Multi-stage oven apparatus system requires that annual three time-of-weeks that arrange carry out regular maintenance, burner hearth is cleaned and refractory materials inspection, that is, the maintenance of multi-stage oven technological system can be carried out according to both working out a scheme, random generation refractory materials case accident rotary kiln can not be resembled and need to stop in emergency repairing, the set production program is delayed.Therefore when adopting multi-stage oven technological system to produce desulphurization denitration activated coke product, the production program is better than the production line adopting rotary kiln.
4, the desulphurization denitration activated coke production technique that proposes of the present invention and production unit, (1) utilize temperature lower than 200 DEG C, flue gas after dedusting carries out roasting hard process, to improve moulding mixture in the follow-up course of processing to molding mass in net belt type continuous drier
Visual appearance, take full advantage of the Lowlevel thermal energy of flue gas; (2) multi-stage oven is carbonized moulding mixture, to activate and oxidation adds
The flammable tail gas segmentation produced in work process is introduced in after-burner (secondary stove) and is carried out thorough burning disposal, and the high-temperature flue gas of generation is used for manufacturing high pressure steam, and drives high-power draft fan device whereby, can save the electric energy of at least 120 ten thousand kWh every year; (3) the technique soft water needed for heat recovery steam boiler is introduced into the activation carbon semiproduct pressure cooling that multi-stage oven is divided into
Machine, indirect heat transfer makes solid phase prod lower the temperature, and the temperature of technique soft water improves simultaneously, enters heat recovery steam boiler manfacturing steam afterwards, has fully recycled the Lowlevel thermal energy of solid phase prod.
To sum up, with traditional with rotary kiln be core manufacturing equipment desulphurization denitration activated coke production line compared with, energy-saving effect of the present invention wants much remarkable.
5, with traditional with rotary kiln be core manufacturing equipment desulphurization denitration activated coke production line compared with, the present invention propose with the multi-stage oven technological system desulphurization denitration activated coke production line that is core because equipment intensity is high, the discharging point/leading point quantity of solid materials and gas-phase product greatly reduces (chimney quantity is reduced to one by three of conventional production lines), flue gas pollutant treatment technology system (blocking dirt device, bag filter, semidry process desulfurizer etc. by after-burner, waste heat steam boiler to form)
To concentrate and efficient, therefore the overall cleaner production effect of production line is more much better than conventional production lines.
Be noted that, the above embodiment is unrestricted to the explanation of technical solution of the present invention, the equivalent replacement of art those of ordinary skill or other amendments made according to prior art, as long as do not exceed thinking and the scope of technical solution of the present invention, all should be included within interest field of the presently claimed invention.
Claims (6)
1. adopt multi-stage oven to manufacture a desulphurization denitration activated coke production technique, it is characterized in that: comprise the steps:
A, granulation, send into the granulation of rolling granulation device continuous rolling by raw coal, auxiliary coal and tackiness agent;
B, roasting hard, the particle of roll-forming is sent into the roasting hard process of mesh-belt drier, utilize temperature lower than 200 DEG C, flue gas after dedusting carries out roasting hard process to shaping particle in mesh-belt drier, the tail gas produced in drying process is transported to semidry process desulfurizer;
C, charing, activation, oxidation, put into that multi-stage oven carries out carbonizing, activates, oxide treatment by baking the particle firmly processed through mesh-belt drier, the tail gas produced in charing, activation, oxidising process is sent into after-burner and is used for manufacture high pressure steam to produce high-temperature flue gas;
D, cooling, send the particle through multi-stage oven charing, activation, oxide treatment into solid-liquid forced action type fast and force cooler cooling, sent by the particle cooled through solid-liquid forced action type cooler, obtained desulphurization denitration activation charcoal;
E, screening, packaging, through screening, packaging, obtained desulphurization denitration activated coke.
2. employing multi-stage oven according to claim 1 manufactures desulphurization denitration activated coke production technique, it is characterized in that: the service temperature of described charing is 550 °-700 °.
3. employing multi-stage oven according to claim 1 manufactures desulphurization denitration activated coke production technique, it is characterized in that: the service temperature of described activation is 800 °-950 °.
4. employing multi-stage oven according to claim 1 manufactures desulphurization denitration activated coke production technique, it is characterized in that: the service temperature of described charing is 250 °-450 °.
5. one kind realizes adopting multi-stage oven to manufacture the desulphurization denitration activated coke production unit of desulphurization denitration activated coke production technique described in claim 1, it is characterized in that: comprise rolling granulation device, drying installation, multi-stage oven, refrigerating unit, after-burner, heat recovery steam boiler and bag filter
Described rolling granulation device is connected with described drying installation;
Described multi-stage oven is connected with after-burner with described drying installation, refrigerating unit respectively;
Described after-burner is connected with described heat recovery steam boiler;
Described heat recovery steam boiler is connected with described bag filter.
6. desulphurization denitration activated coke production unit according to claim 5, is characterized in that: described drying installation is mesh-belt drier.
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| CN104501173A (en) * | 2014-12-30 | 2015-04-08 | 杭州韦尔茂通环境技术有限公司 | Device and process for pyrolysis treatment on chemical-industry type solid waste and waste liquid |
| CN105776208B (en) * | 2016-04-06 | 2017-04-26 | 府谷县三联煤电化工有限责任公司 | Production method of active coke |
| CN109824049B (en) * | 2019-03-29 | 2022-06-10 | 平罗县国宁活性炭有限公司 | Preparation method of activated carbon for solvent recovery |
| CN109806839B (en) * | 2019-03-29 | 2022-01-28 | 平罗县国宁活性炭有限公司 | Preparation method of active coke |
| CN110304631A (en) * | 2019-07-25 | 2019-10-08 | 河北威达蓝海环保科技有限公司 | A kind of activated coke post forming device and technique |
| CN111689498A (en) * | 2020-06-05 | 2020-09-22 | 中冶南方都市环保工程技术股份有限公司 | Continuous production system and method for high-desulfurization and denitrification active coke |
| CN115744904B (en) * | 2022-11-14 | 2024-06-18 | 中冶南方都市环保工程技术股份有限公司 | Preparation device and method of short-process desulfurization columnar active coke |
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| CN102001653A (en) * | 2010-09-14 | 2011-04-06 | 北京国能普华环保工程技术有限公司 | Preparation method of activated coke for water treatment |
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| US4883499A (en) * | 1988-05-06 | 1989-11-28 | Beierle Frederick P | Process adapted to produce synthesis gas and activated carbon from organic input material |
| CN102001653A (en) * | 2010-09-14 | 2011-04-06 | 北京国能普华环保工程技术有限公司 | Preparation method of activated coke for water treatment |
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Address after: The development of Hanjiang Economic Development Zone of Jiangsu city in Yangzhou Province, 225127 West Road No. 217 Patentee after: SHANGDING ENVIRONMENTAL TECHNOLOGY (JIANGSU) Co.,Ltd. Address before: The development of Hanjiang Economic Development Zone of Jiangsu city in Yangzhou Province, 225127 West Road No. 217 Patentee before: SHANG DING FURNACE TECHNOLOGY (YANGZHOU) CO.,LTD. |
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Denomination of invention: Production process and equipment for manufacturing desulfurization and denitration activated coke with multistage furnace Effective date of registration: 20220930 Granted publication date: 20150923 Pledgee: Bank of China Limited Hangjiang Branch, Yangzhou Pledgor: SHANGDING ENVIRONMENTAL TECHNOLOGY (JIANGSU) Co.,Ltd. Registration number: Y2022320000582 |