CN102580676B - Preparation method of active coke for wastewater advanced treatment - Google Patents

Preparation method of active coke for wastewater advanced treatment Download PDF

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Publication number
CN102580676B
CN102580676B CN2012100432650A CN201210043265A CN102580676B CN 102580676 B CN102580676 B CN 102580676B CN 2012100432650 A CN2012100432650 A CN 2012100432650A CN 201210043265 A CN201210043265 A CN 201210043265A CN 102580676 B CN102580676 B CN 102580676B
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activated coke
regeneration unit
preparation
coke
active coke
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CN102580676A (en
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申纪军
赵隽贤
唐唯森
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BEIJING SHUISANGTIAN ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD.
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CHONGQING KANGDA ENVIRONMENTAL PROTECTION INDUSTRY (GROUP) Co Ltd
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Abstract

The invention discloses a preparation method of an active coke for the wastewater advanced treatment. The preparation method comprises the following steps: firstly, directly conveying a semi coke subjected to dehydrating, drying and dry distillation treatments into an active coke regenerating machine set; then, activating the semi coke in the active coke regenerating machine set; finally, conveying a final product into an active coke cooling device, and cooling to generate the active coke. According to the preparation method, the semi coke subjected to drying and dry distillation treatments is adopted as a raw material and is directly activated, so that the production cost of the active coke is reduced; vapor is adopted as an activating agent in an activation process, and the vapor is hot vapor produced in a vapor generator by high-temperature smoke waste heat, so that the energy consumption is reduced; and produced waste gas is treated by a condensing deduster, a mixed gas separation and purification device and an environment-friendly smoke emission device, so that the pollution of toxic and harmful gases and particulate matters to the atmospheric environment is avoided.

Description

A kind of preparation method of active coke for wastewater advanced treatment
Technical field
The present invention relates to the preparation field of active coke for wastewater advanced treatment, particularly a kind of advanced treatment of wastewater activated coke preparation method.
Background technology
Existing activated coke is a kind of particulate matter with adsorption function take brown coal as primary raw material system.The main minute following step of existing activated coke preparation: at first, with pretreated brown coal destructive distillation, make semicoke, then utilize semicoke, coking coal and binder to mix, and through surviving property of overactivation Jiao.
Existing preparation method take brown coal as raw material, because of the brown coal lumpiness not of uniform size, must carry out break process, in order to it is carried out acidleach processing and destructive distillation, and the selected of brown coal particle diameter has material impact to the activated coke performance, a large amount of ash contents in brown coal, the organic shrinkage stress in river has difference in retort process, causes inhomogeneous contraction, and activated coke is cracked, intensity descends, and production cost is increased.
At present, activated coke from lignite is mainly used in desulfurization, denitrogenation aspect, and this kind activated coke needs moulding, cost is higher, and for the activated coke main employing at present of advanced treatment of wastewater, produces by indigenous method, with the open firing point fire coal, extinguish and make Deng grilling thoroughly rear water, production technology is simple, fall behind.The main place of production of China's brown coal is in Inner Mongol and the Northwest, and sewage disposal will be used in the whole country with activated coke, and brown coal are made activated coke as raw material and are faced the problems such as ore dressing, fragmentation, production and cost of transportation are very high, find a kind of raw material that meet technological requirement or intermediate products as making the activated coke raw material, extremely urgent.
Therefore be badly in need of a kind of preparation method who is used for cheaply the activated coke that advanced treatment of wastewater uses.
Summary of the invention
In view of this, technical problem to be solved by this invention is to provide a kind of preparation method who is used for cheaply the activated coke that advanced treatment of wastewater uses.This preparation method adopts active coke regenerating equipment, realizes the manufacturing of activated coke by the adjust operation operating mode.
The objective of the invention is to be achieved through the following technical solutions:
The preparation method of a kind of active coke for wastewater advanced treatment provided by the invention comprises the following steps:
1) blue charcoal is transported in activated coke regeneration unit;
2) in activated coke regeneration unit, blue charcoal is carried out activation processing;
3) with step 2) in end product be transported in the activated coke cooling device and carry out cooling processing, generate activated coke.
Further, it is raw material that described blue carbon adopts the leftover bits and pieces of the blue charcoal in chemical industry, smelting, gas making industry, particle diameter 2-8mm.
Further, further comprising the steps of:
4) in the regenerative process at activated coke regeneration unit between dedusting gas carry out the condensation dust removal process.
Further, further comprising the steps of:
5) reclaim the heat of activated coke regeneration unit in the high-temperature flue gas of soak time section, and with the form that forms high-temperature vapor, be transported in heat-accumulator tank, with the steam in heat-accumulator tank and be transported to activated coke regeneration unit and reuse, the high-temperature flue gas after described recovery is discharged in air by the fume environment protection tapping equipment when the activation of blue charcoal.
the invention has the advantages that: the present invention adopts and is used for chemical industry, smelt, the leftover bits and pieces of the blue charcoal of the industries such as gas making is raw material, particle diameter 2-8mm, because of blue charcoal super-dry, retort process, so, utilize blue charcoal to make activated coke and only need pass through activation process, therefore reduced the activated coke production cost, the present invention adopts steam as the activator in activation process, the superheated steam of this steam for by the high-temperature flue gas waste heat that is recovered to heat-accumulator tank, producing in steam generator, therefore reduced energy consumption, by adopting the condensation deduster, mixed gas separation purifier and fume environment protection tapping equipment are processed the waste gas of generation, avoid toxic and harmful and Particulate Pollution atmospheric environment.
Other advantage of the present invention, target and feature will be set forth to a certain extent in the following description, and to a certain extent,, based on to investigating hereinafter, being apparent to those skilled in the art, perhaps can be instructed from the practice of the present invention.The objectives and other advantages of the present invention can be passed through following specification, claims, and in accompanying drawing, the specifically noted structure realizes and obtains.
Description of drawings
In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing, wherein:
Fig. 1 makes the activated coke process device figure for the blue charcoal that the embodiment of the present invention provides;
Fig. 2 makes the activated coke process flow diagram for the blue charcoal that the embodiment of the present invention provides.
In figure, 1 expression feeding screw, 2 expression activated coke regeneration units, the 3 cooling units of expression activated coke, 4 expression condensation dedusters, 5 expression mixed gas separation purifiers, 6 expression flue gas waste heat recovery apparatus, 7 expression heat-accumulator tanks, 8 expression fume environment protection tapping equipments, 9 expression condensation ponds, 10 expression gas-fired equipments, 11 expression combustion fans, 12 expression dedusting fans, 13 expression supply-water pumps.
The specific embodiment
Below with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail; Should be appreciated that preferred embodiment only for the present invention is described, rather than in order to limit the scope of the invention.
The apparatus figure that is used for blue charcoal regeneration that Fig. 1 provides for the embodiment of the present invention, as shown in the figure: a kind of equipment for blue charcoal regeneration provided by the invention, comprise feeding screw 1, activated coke regeneration unit 2, the cooling unit 3 of activated coke, condensation deduster 4, mixed gas separation purifier 5, flue gas waste heat recovery apparatus 6, heat-accumulator tank 7, fume environment protection tapping equipment 8 and condensation pond 9, described feeding screw 1, be used for blue charcoal is transported in activated coke regeneration unit 2; Described activated coke regeneration unit 2, be used for blue charcoal activation, on the sidewall of described activated coke regeneration unit 2, at least one gas-fired equipment 10 is installed, the fuel gas inlet of described gas-fired equipment 10 is connected with two gas pipelines, wherein one is external Gas Pipe, and another root is for recycling when activated coke is regenerated the flammable tracheae of the combustible gas that produces; The cooling unit 3 of described activated coke, the blue charcoal after being used for processing purifies, cooling processing, reclaims as regeneration activity burnt; Described feeding screw 1 is arranged at the feed end of activated coke regeneration unit 2, and the cooling unit 3 of described activated coke is arranged at the discharge end of activated coke regeneration unit 2.
In activated coke regeneration unit 2,, according to process, carry out activation procedure, soak time is 0.9h~1.1h, discharging time is 0.4h~0.6h.Adopt intermittent feeding, intermittent take-off mode in the present embodiment, wherein feed time is about 0.4h~0.6h, and discharging time is about 0.4h~0.6h.
Described activated coke regeneration unit 2 also is provided with combustion-supporting airduct and combustion fan 11, and described combustion-supporting airduct is connected with the fuel gas inlet of gas-fired equipment 10, and described combustion fan 11 is connected with combustion-supporting airduct; Described activated coke regeneration unit 2 inside arrange frid, and described frid only turns over blue charcoal material when blue charcoal regeneration forward transmits, blue charcoal material is not pushed ahead, and counter-rotating can be pushed ahead blue charcoal material.
Described activated coke regeneration unit 2 adopts horizontal external heat activation furnace, and the temperature control mode of described activated coke regeneration unit 2 adopts automatic temperature control system, and feed way carries out screw feeding by detachable feeding screw.
Described condensation deduster 4, be used for and will carry out the condensation dust removal process at the activated coke gas between the dedusting of unit regenerative process of regenerating; Also be provided with dedusting fan 12 in the present embodiment, this dedusting fan 12 is connected with the condensation deduster, and the water that produces from the condensation deduster is transported in the condensation pond; Described mixed gas separation purifier 5, be used for reclaiming the fuel gas of activated coke regeneration unit at the high-temperature flue gas of soak time section, is transported to activated coke regeneration unit 2 after processing by purification separation and reuses; There is no recuperable fuel gas in the present embodiment, so this partial devices is not used, described flue gas waste heat recovery apparatus 6, be used for reclaiming the heat of activated coke regeneration unit at the high-temperature flue gas of soak time section; Described recovery heat delivery is in heat-accumulator tank 7, utilize this part heat generation steam and be transported to activated coke regeneration unit when blue charcoal activation and reuse, high-temperature flue gas after described recovery is discharged in air by the fume environment protection tapping equipment, described activated coke regeneration unit 2 is connected with condensation deduster 4, mixed gas separation purifier 5, flue gas waste heat recovery apparatus 6 respectively, described heat-accumulator tank 7 is connected between activated coke regeneration unit 2 and flue gas waste heat recovery apparatus 6, described fume environment protection tapping equipment be connected with flue gas waste heat recovery apparatus.
Described condensation pond 9 water inlet ends are connected respectively water side and are connected with the condensation deduster with mixed gas separation purifier 5 water sides, 9 water sides, described condensation pond are connected with mixed gas separation purifier 5 water inlet ends, condensation deduster water inlet end, flue gas waste heat recovery apparatus water inlet end respectively by supply-water pump 13.
The blue charcoal regeneration technology FB(flow block) schematic diagram that Fig. 2 provides for the embodiment of the present invention, as shown in the figure: the preparation method of a kind of active coke for wastewater advanced treatment that the embodiment of the present invention provides comprises the following steps:
1) blue charcoal is transported in activated coke regeneration unit;
2) in activated coke regeneration unit, blue charcoal is carried out activation processing;
3) with step 2) in end product be transported in the activated coke cooling device and carry out cooling processing, generate activated coke.
4) in the high-temperature flue gas that produces in the regenerative process at activated coke regeneration unit between dedusting gas carry out the condensation dust removal process.
5) reclaim the heat of activated coke regeneration unit in the high-temperature flue gas of soak time section, and be transported in heat-accumulator tank, with the steam in heat-accumulator tank and be transported to activated coke regeneration unit and reuse, the high-temperature flue gas after described recovery is discharged in air by the fume environment protection tapping equipment when the activation of blue charcoal.
Blue carbon raw material in the embodiment of the present invention, can select the leftover bits and pieces in the industries such as chemical industry, smelting, gas making, this leftover bits and pieces is through low temperature distillation production, pyrolysis temperature is generally 600 ℃ of left and right, the characteristics that fixed carbon is high, higher than resistivity, chemism is high, ash content is low, sulphur is low, phosphorus is low, moisture is low etc. " three high four is low ".The industry such as chemical industry, smelting uses blue charcoal to sieve, its leftover bits and pieces particle diameter<8mm, the just in time suitable activated coke that is processed into.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention also is intended to comprise these changes and modification interior.

Claims (1)

1. the preparation method of an active coke for wastewater advanced treatment is characterized in that: comprise the following steps:
1) blue charcoal is transported in activated coke regeneration unit;
2) in activated coke regeneration unit, blue charcoal is carried out activation processing;
3) with step 2) in end product be transported in the activated coke cooling device and carry out cooling processing, generate activated coke;
Described blue carbon adopts the leftover bits and pieces of the blue charcoal that uses in chemical industry, smelting, gas making industry to be raw material, particle diameter 2-8mm;
Further comprising the steps of:
4) in the regenerative process at activated coke regeneration unit between dedusting gas carry out the condensation dust removal process;
Further comprising the steps of:
5) reclaim the heat of activated coke regeneration unit in the high-temperature flue gas of soak time section, and with the form that forms high-temperature vapor, be transported in heat-accumulator tank, steam in heat-accumulator tank is transported to activated coke regeneration unit when blue charcoal activation and reuses, the high-temperature flue gas after described recovery is discharged in air by the fume environment protection tapping equipment.
CN2012100432650A 2012-02-24 2012-02-24 Preparation method of active coke for wastewater advanced treatment Active CN102580676B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106833706B (en) * 2017-01-22 2019-09-24 中国重型机械研究院股份公司 A kind of close-coupled activated coke carbonization-activation device
CN108178353B (en) * 2017-12-20 2020-09-01 浙江环兴机械有限公司 Granular activated carbon adsorption and regeneration integrated treatment method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101462040A (en) * 2007-12-19 2009-06-24 张大伟 Method and apparatus for regenerating activated coke after processing waste water and sewage water
CN101491754A (en) * 2008-01-24 2009-07-29 张大伟 Reactive coke regeneration method and device
CN101538038A (en) * 2009-04-27 2009-09-23 煤炭科学研究总院 Activated coke and preparation method and application thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101462040A (en) * 2007-12-19 2009-06-24 张大伟 Method and apparatus for regenerating activated coke after processing waste water and sewage water
CN101491754A (en) * 2008-01-24 2009-07-29 张大伟 Reactive coke regeneration method and device
CN101538038A (en) * 2009-04-27 2009-09-23 煤炭科学研究总院 Activated coke and preparation method and application thereof

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