CN101050371B - Method for solving polluted environment form coal tar smoke by molding, granulating coal tar under water - Google Patents
Method for solving polluted environment form coal tar smoke by molding, granulating coal tar under water Download PDFInfo
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- CN101050371B CN101050371B CN2007100143522A CN200710014352A CN101050371B CN 101050371 B CN101050371 B CN 101050371B CN 2007100143522 A CN2007100143522 A CN 2007100143522A CN 200710014352 A CN200710014352 A CN 200710014352A CN 101050371 B CN101050371 B CN 101050371B
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Abstract
This invention relates to a method for molding and granulating coal tar pitch under water, which can solve the environmental pollution problem caused by coal tar pitch fume. The method comprises: (1) pre-cooling coal tar pitch to 220-250 deg.C with a hot fluid carrier; (2) further cooling coal tar pitch to 130-150 deg.C with a coal tar pitch cooler; (3) pumping cooled coal tar pitch into a granulator by a flow pump, and granulating by the granulator under water; (4) molding and granulating, and circulating the cooling water. The method can avoid coal tar pitch fume in the storage tank or produced by coal tar pitch discharge, thus improve the operation conditions. The method is suitable for treating coal tar pitch fume during coal tar processing.
Description
Technical field
The method of solving polluted environment form coal tar smoke by molding, granulating coal tar under water of the present invention relates to the technical field that solves polluted environment form coal tar smoke, the glance coal that especially produces during the coal-tar pitch blowing.
Background technology
Since contain the organic cpds that benzopyrene has obvious carcinogenesis in the glance coal, very big to human harm when content acquires a certain degree.Therefore must administer glance coal in the coal tar processing environment.At present aspect the improvement glance coal; Usually there are five kinds of methods; Be respectively: WATER-WASHING METHOD, oil wash absorption process, static are pounced on collection method, absorption method and burning method, and this several method has just solved the glance coal that produces from the trough top, but the glance coal can not fundamentally solve asphalt moulding the time; Thereby workman's operating environment can not be improved completely, and this also is an important factor of restriction coal tar processing environment.
Summary of the invention
In order to overcome the deficiency that exists in the above-mentioned prior art; The object of the present invention is to provide a kind of method of solving polluted environment form coal tar smoke by molding, granulating coal tar under water; Utilize this method not only can solve the glance coal that storage tank produces; The glance coal that produces in the time of can also effectively solving blowing has improved worker's operating environment.
Technical scheme of the present invention is that the method for this kind solving polluted environment form coal tar smoke by molding, granulating coal tar under water is characterized in that: 1) at the preparation colling stages, utilize the hot-fluid carrier that coal-tar pitch is cooled to 220 ℃-250 ℃; 2) utilize pitch cooler to coal-tar pitch further cooling again, be cooled to 130-150 ℃ to pitch; 3), with the pitch flow pump cooled pitch is got to pitch nodulizer place, nodulizer cuts into eu-bitumen unified granular under water; 4) the cooling water circulation use of asphalt moulding granulation.
The further scheme of the present invention is:
The eu-bitumen more than 250 ℃ that comes from Distallation systm gets in the asphaltic products. jar, is added to pitch cooler through a pitch recycle pump part, another part, and recycling is returned asphaltic products. jar 1 and is mixed; Temperature in the asphaltic products. jar remains on 220 ℃-250 ℃ through the circulation of the hot-fluid in the inner heating system.
The pitch that gets into pitch cooler at first is cooled to pitch below 200 ℃ with vapour generator, and pitch is further reduced temperature to 130-150 ℃ by pitch cooler then, the about 3000mPas of viscosity.
Cooled pitch is delivered to the granulation system by the pitch flow pump, and the pitch flow pump wraps up with MP steam; Pipeline from the pitch cooler to the nodulizer with electrical tracing or other insulation measure so that the whole prod loop temperature keeps constant; Nodulizer cuts into eu-bitumen unified granular under water.
The invention has the beneficial effects as follows:
1, benzopyrene obviously reduces, by former 1.8mg/m
3Drop to 0.3mg/m
3, reach the emission standard of national requirements.
2, worker's environment satisfactory degree reaches 92.36%, and the worker likes under this environment, carrying out work.
3, the number of times of smoldering during pitch room material obviously reduces, and does not smolder in one month sometimes.
4, dig the pitch bay number of times clearly and reduce, dig clearly every year 1 time, alleviated working strength of workers.
5, realize robotization control, reach off-line operation basically.
6, system stability is reliable, and failure rate is low, for guaranteeing that safety in production is significant.
Description of drawings
Figure is a process flow sheet of the present invention.
Among the figure: 1 asphaltic products. jar, 2 pitch recycle pumps, 3 pitch coolers, 4 vapour coolers, 5 condensation water pots, 6 cooling water circulating pumps, 7 pitch flow pumps, 8 nodulizers, 9 watercoolers, 10 travelling belts, 11 spiral conveyers, 12 pitch bay water-circulating pumps.
Embodiment
Be elaborated according to process flow sheet below.
1, pitch is got the raw materials ready
The eu-bitumen more than 250 ℃ that comes from Distallation systm gets into asphaltic products. jar 1; Pitch in the asphaltic products. jar 1 is added to pitch cooler through pitch recycle pump 2 parts; Bitumen level to keep the pitch cooler bottom is constant, another part, and recycling is returned asphaltic products. jar 1 and is mixed.Temperature in the asphaltic products. jar 1 remains on (promptly more than 220 ℃) on the threshold value through the hot-fluid in the inner heating system (like thermal oil) circulation; The words of subcritical value; Can't take out with the pitch recycle pump because asphalt viscosity is too big, inner heating system is made up of the heating tube on centre bottom that is installed in the asphaltic products. jar and the circumference.Asphaltic products. jar 1 has been realized utilizing the hot-fluid carrier that coal-tar pitch is cooled to 220 ℃-250 ℃ from the next eu-bitumen more than 250 ℃ of Distallation systm.
2, liquid bitumen cooling
Because the requirement of pitch cooler, temperature reduce and can not settle at one go, so pitch at first is cooled to pitch below 200 ℃ with the vapour generator (not shown); Pitch is sent to the top of pitch cooler then, and during the water in the pitch cooler chamber (steam condensate) evaporation, pitch leans on gravity on tube wall, to flow in the inside; Carry out heat exchange with chamber Zhong Shui, further reduce asphalt temperature, the asphalt temperature of pitch cooler outlet can be regulated through the vapor pressure in the control pitch cooler; To reach optimization; Temperature that is suitable for granulating and viscosity, the temperature 130-150 of granulation ℃, the about 3000mPas of viscosity.
From the steam of pitch cooler in the chamber of pitch cooler; Under barometric point; Shrinkage; Used during this time cooling media is a water coolant, and cooling back steam condensate flows to water of condensation jar 5 under the effect of gravity, with cooling water circulating pump 6 water of this condensation water pot is returned pitch cooler 3 again and get the raw materials ready.Be the loss of this device institute steam condensate of balance, add the external soft water of part to keep the liquid level stabilizing of drainer at the pump inlet of cooling water circulating pump.
3, pitch granulation
After the cooling, pitch is delivered to the granulation system by pitch flow pump 7, and pitch flow pump 7 usefulness MP steams wrap up.8 pipeline so that the whole prod loop temperature keeps constant, and makes the elasticity of bituminization TR (80-115 ℃) maintenance necessity that this device institute can handle with electrical tracing or other insulation measure from the pitch cooler to the nodulizer.
The granulation system is by two nodulizers, and stainless steel conveyor belt and cooling basin are formed.Nodulizer 8 cuts into eu-bitumen unified granular under water.This operation has under water reduced the generation of glance coal to greatest extent.During having, nodulizer presses parcel; Each particle behind the asphalt moulding continues to drop on the travelling belt 10 in the cooling pool, and when transmitting under water, the pitch particle center remains liquid; The outside is a solid, and the speed of travelling belt can be regulated between 2.02 to 14.4m/min through speed-changing driving device.The temperature of water coolant pool inner water remains on about 44 ℃, and all particles are transmitted band and deliver to the water surface and overturning, in the compartment of packing into.
4, water closed loop
Take the heat in the pond to for removing the heated bitumen particle, manage closed cycles through watercooler 9 with pitch bay water-circulating pump 12.Before this pitch bay water strainer has been installed, strainer is made up of nylon tape, preserve and float over the fine granular in the pond, and siphoned away by pump, so strainer has reduced the wearing and tearing to watercooler 9.
On the other hand, the heaviest solids precipitation has the grey bar mud scraper of collection to reclaim in the bottom in condensation hole then.A drop measurement device is arranged on the strainer; This device is used to measure sedimentary pitch particle on the strainer; In the course of normal operation; In case the filter pressure drop measuring apparatus reaches the maximum differential pressure value, current can switch on the stand-by facilities, the pitch particle of collecting in this process is carried out pitch particle dry and that finally the grey bar of collection reclaims bottom the pond mix mutually.
Pitch bay water flows out after the watercooler 9, and moisture becomes two-way, and one the tunnel continues from the pond overhead stream; One the tunnel is sprayed onto pitch travelling belt 10 returning parts; The pitch belt keeps permanent cleaning thus, and pitch particle is directly fallen the bottom, pond, has spiral conveyer 11 to siphon away there.
Claims (3)
1. the method for solving polluted environment form coal tar smoke by molding, granulating coal tar under water is characterized in that: 1) at the preparation colling stages, utilize the hot-fluid carrier that coal-tar pitch is cooled to 220 ℃-250 ℃; 2) pitch of entering pitch cooler at first is cooled to pitch below 200 ℃ with vapour generator, and pitch is further reduced temperature to 130-150 ℃ by pitch cooler then, viscosity 3000mPas; 3), with the pitch flow pump cooled pitch is got to pitch nodulizer place, nodulizer cuts into eu-bitumen unified granular under water; 4) the cooling water circulation use of asphalt moulding granulation.
2. the method for solving polluted environment form coal tar smoke by molding, granulating coal tar under water according to claim 1; It is characterized in that: the eu-bitumen more than 250 ℃ that comes from Distallation systm gets in the asphaltic products. jar; Be added to pitch cooler through a pitch recycle pump part; Another part, recycling return the asphaltic products. jar to be mixed; Temperature in the asphaltic products. jar remains on 220 ℃-250 ℃ through the circulation of the hot-fluid in the inner heating system.
3. the method for solving polluted environment form coal tar smoke by molding, granulating coal tar under water according to claim 1, it is characterized in that: cooled pitch is delivered to the granulation system by the pitch flow pump, and the pitch flow pump wraps up with MP steam; Pipeline from the pitch cooler to the nodulizer with electrical tracing or other insulation measure so that the whole prod loop temperature keeps constant; Nodulizer cuts into eu-bitumen unified granular under water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100143522A CN101050371B (en) | 2007-04-24 | 2007-04-24 | Method for solving polluted environment form coal tar smoke by molding, granulating coal tar under water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100143522A CN101050371B (en) | 2007-04-24 | 2007-04-24 | Method for solving polluted environment form coal tar smoke by molding, granulating coal tar under water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101050371A CN101050371A (en) | 2007-10-10 |
| CN101050371B true CN101050371B (en) | 2012-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007100143522A Expired - Fee Related CN101050371B (en) | 2007-04-24 | 2007-04-24 | Method for solving polluted environment form coal tar smoke by molding, granulating coal tar under water |
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| Country | Link |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102492453A (en) * | 2011-12-12 | 2012-06-13 | 宝钢工程技术集团有限公司 | Smokeless underwater forming production device for pitch and technology thereof |
| CN102876345A (en) * | 2012-10-30 | 2013-01-16 | 中国石油化工股份有限公司 | Hard asphalt granulation method and device thereof |
| CN106479550B (en) * | 2016-11-02 | 2019-08-02 | 洛阳涧光特种装备股份有限公司 | A kind of asphalt moulding device and process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1033829A (en) * | 1988-12-02 | 1989-07-12 | 陈汉长 | Production method of granular pitch |
| CN1077395A (en) * | 1992-04-14 | 1993-10-20 | 抚顺石油学院 | A kind of method of asphalt flue gas purifying |
| CN1616599A (en) * | 2003-11-14 | 2005-05-18 | 马孟春 | Method for producing granular pitch |
-
2007
- 2007-04-24 CN CN2007100143522A patent/CN101050371B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1033829A (en) * | 1988-12-02 | 1989-07-12 | 陈汉长 | Production method of granular pitch |
| CN1077395A (en) * | 1992-04-14 | 1993-10-20 | 抚顺石油学院 | A kind of method of asphalt flue gas purifying |
| CN1616599A (en) * | 2003-11-14 | 2005-05-18 | 马孟春 | Method for producing granular pitch |
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| CN101050371A (en) | 2007-10-10 |
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Granted publication date: 20120307 Termination date: 20160424 |