CN105038898A - Semicoke passivation technology and system - Google Patents
Semicoke passivation technology and system Download PDFInfo
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- CN105038898A CN105038898A CN201510430361.4A CN201510430361A CN105038898A CN 105038898 A CN105038898 A CN 105038898A CN 201510430361 A CN201510430361 A CN 201510430361A CN 105038898 A CN105038898 A CN 105038898A
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Abstract
The invention discloses a semicoke passivation technology and system. The system comprises a chilling zone, a spraying zone, a cooling zone, an oxidation zone, a delivery device and a water supply device, wherein the chilling zone, the spraying zone, the cooling zone and the oxidation zone are transversely arranged. According to the system, semicoke passivation can be achieved only through water and air at low cost with a simple method, and passivated semicoke is stable in state.
Description
Technical field
The present invention relates to a kind of passivation technology and passivation system, particularly relate to a kind of semicoke passivation technology and adopt the passivation system of this technique.
Background technology
Low-rank coal upgrading technology is a kind of technology processing low-rank coal of rising at present, for the treatment of the low-rank coal of high-moisture, high volatile, thus produces semicoke and coal-tar products.But because the semicoke after pyrolysis has higher activity, easy spontaneous combustion and the problem such as can not to transport for long-distance, so the Utilizing question of semicoke is the subject matter faced in current industry.
The patent No. is the passivating method that patent discloses a kind of active coal of 201310002721.1, propose the highest temperature area of Coal Yard or spontaneous combustion region implant or arrange subcooling sweeping gas, such as air, CO2, N2 and/or rare gas element blowing device and force to discharge the gas barrier remaining in the oxidizing gas causing spontaneous combustion of coal in Coal Yard internal space, a small amount of low temperature volatile matter gas and cooling sweeping gas tail gas.Above-mentioned blowing device and gas barrier can make rapidly high temperature coal or the cooling of spontaneous combustion coal, discharge the oxidizing gas causing spontaneous combustion, a small amount of low temperature volatile matter gas simultaneously fast, and then prevent spontaneous combustion of coal or spontaneous combustion of coal is extinguished.
The patent No. 201210526943.9 is for the oxidation characteristic of active function groups in coal, a kind of compound stopping agent of the control coal spontaneous combustion based on low-temperature oxidation of coal mechanism is provided, this stopping agent is on the basis keeping good physics resistanceization effect, can according to the differential responses character of active group during low-temperature oxidation of coal, targetedly inactivate activity group.Inventing its composition of technical scheme adopted is catechin, nontoxic phosphorous acid ester, Macrogol 200, sodium lauryl sulphate and aqueous solvent; Sodium lauryl sulphate is tensio-active agent.
The passivation system that application discloses that a kind of semicoke of notification number 103060047A, this system is divided into pre-cooling zone, composition such as water spray regulatory region, oxidation zone, cooling zone etc., based on the oxygen G&W in semicoke and air, the principle passivation semicoke that slow aqua oxidation reacts occurs.About 40 meters of passivation tower height degree, material relies on self gravitation to discharge from top to bottom.
But, utilization stopping agent technology of the prior art reaches resistanceization effect by isolated coal oxygen contact or water conservation moisturizing, they come from physical action to the main Inhibition of coal, only there is a small amount of chemical reaction or chemical reaction do not occur, therefore be physics stopping agent, and the physical condition of just coal and environment thereof that physics stopping agent changes, fundamentally can not solve the danger of coal spontaneous combustion, along with the consumption of stopping agent is run off, its resistanceization effect also fades away, and therefore these stopping agents also exist the shortcomings such as resistanceization weak effect, resistanceization paracme be short.
Although the mode effect of passivation tower is better, complicated operation, invest high, working cost is high.
Therefore, how to utilize lower cost, simply equipment and make active carbocoal passivation to reach steady state, becoming the problem needing solution badly.
Summary of the invention
In order to the present invention that solves the problem discloses a kind of semicoke passivation technology, mainly comprise following processing step:
1) Quench cooling: the high-temperature semi-coke after pyrolysis is sent into chill zone and is lowered the temperature by the mode of spraying cooling water;
2) spraying cooling: will through step 1) semicoke that processed sends into spray district, lowers the temperature in the mode of atomizing spray;
3) water coolant indirect contact cooling: by through step 2) the semicoke feeding cooling zone that process makes itself and water coolant indirect contact lower the temperature;
4) oxidizing reaction: will through step 3) semicoke that processed sends into oxidation zone, makes it fully contact with air and carry out oxidizing reaction.
Wherein step 1) after spraying cooling cooling, the temperature of semicoke is 100-110 DEG C, water content≤3%.
Wherein step 2) after atomizing spray cooling, the temperature of semicoke is 70 DEG C, and water content is 7%-11%.
Wherein step 3) after water coolant indirect contact cooling, the temperature of semicoke is 40-50 DEG C
For realizing above-mentioned technique, the invention also discloses a kind of semicoke passivation system, comprising and laterally to set gradually:
Chill zone, it comprises the opening for feed sending semicoke to enter chill zone; The bottom of chill zone has rotation card, can control the time that semicoke rests on this district by speed of rotation; The top of chill zone is provided with shower nozzle, to be sprayed at by water coolant on the semicoke of rotation card;
Spray district, its inside is provided with multiple atomizer, carries out atomizing spray to semicoke;
Cooling zone, has been evenly arranged many water pipes in it, water coolant, at described water Bottomhole pressure, carries out indirect heat exchange with semicoke;
Oxidation zone, is provided with blast inlet, can control by described blast inlet the air capacity entering described oxidation zone, thus controls the degree of oxidation of semicoke;
Also comprise for chill zone, spray district, cooling zone provide the water supply installation of water coolant; And, be arranged on the semicoke e Foerderanlage in chill zone, spray district, cooling zone and oxidation zone.
Semicoke passivation technology of the present invention and passivation system compared with prior art, have following characteristics:
1, adopt the mode of lateral arrangement chill zone, spray district, cooling zone and oxidation zone to be coupled together, eliminate high-pressure pump compared to tower passivation system, thus reduce running cost.
2, semicoke can be made to obtain sufficient passivation, and because of the prolongation of time again activity recovery, can not thoroughly solve the problem of semicoke spontaneous combustion.
3, native system only adopts ortho-water and simple device to achieve the passivation of semicoke, need not any chemical reagent etc., effectively reduces cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of semicoke passivation system of the present invention.
[primary clustering nomenclature]
1 chill zone
11 opening for feeds
12 shower nozzles
2 spray districts
21 atomizers
3 cooling zones
4 oxidation zones
41 blast inlets
Embodiment
For fully understanding object of the present invention, feature and effect, existing by following specific embodiment, and coordinate accompanying drawing, the present invention is described in detail as follows:
As shown in Figure 1, semicoke passivation system of the present invention comprise laterally set gradually chill zone 1, spray district 2, cooling zone 3 and oxidation zone 4, and the semicoke e Foerderanlage be arranged in aforementioned region, this semicoke e Foerderanlage can by semicoke according to the above-mentioned zone sequence transmission set gradually.In addition, this semicoke passivation system also comprises water supply installation, to provide water coolant to the shower nozzle in chill zone 1, spray district 2 and cooling zone 3 or water pipe.
Chill zone 1 is provided with opening for feed 11, and the top of chill zone 1 is evenly arranged shower nozzle 12 in groups, to be lowered the temperature to semicoke by spraying cooling water.The bottom of chill zone 1 is provided with rotating disk, and semicoke is entered after in chill zone 1 by opening for feed 11 and is sent to this rotating disk, and sprays water coolant by shower nozzle 12 and lower the temperature.Reached by the rotating speed controlling rotating disk and control the residence time of semicoke at chill zone 1, and by regulating the spray flux of shower nozzle 12 to make the temperature of the high-temperature semi-coke of about 500 DEG C when sending chill zone 1 control at 100-110 DEG C, and water content control is within 3%.
The semicoke of tentatively lowering the temperature through chill zone 1 is sent into spray district 2 by transport unit, spray is provided with multiple atomizer 21 that accurately can control spray flux in district 2, water spray is even and atomizing effect is good, under guaranteeing that the water of shower nozzle does not become plume, prevents semicoke ponding and causes equipment to block.Semicoke temperature after spray is 70 DEG C, and water content control is at 7%-11%.
Be admitted to cooling zone 3 from spray district 2 semicoke out, be evenly laid with many water pipes in cooling zone 3, water coolant is at water Bottomhole pressure and semicoke indirect heat exchange, and the temperature of semicoke after heat exchange controls at 40-45 DEG C.
After above-mentioned process, semicoke sends into oxidation zone 4 by e Foerderanlage, is provided with the blast inlet 41 that can control to enter this district's air capacity in oxidation zone 4, by enter into air in oxidation zone 4 number, control the degree of oxidation of semicoke.In this region, air freely can pass through from semicoke, fully to contact with semicoke and to be oxidized, finally reaches the object of passivation semicoke.
Can be understood as, the present invention is described by some embodiments, and those skilled in the art without departing from the spirit and scope of the present invention, can carry out various change or equivalence replacement to these characteristic sum embodiments.In addition, under the teachings of the present invention, can modify to adapt to concrete situation and material to these characteristic sum embodiments and can not the spirit and scope of the present invention be departed from.Therefore, the present invention is not by the restriction of specific embodiment disclosed herein, and the embodiment in the right of all the application of falling into all belongs to protection scope of the present invention.
Claims (5)
1. a semicoke passivation technology, mainly comprises following processing step:
1) Quench cooling: the high-temperature semi-coke after pyrolysis is sent into chill zone (1) and is lowered the temperature by the mode of spraying cooling water;
2) spraying cooling: will through step 1) semicoke that processed sends into spray district (2), lowers the temperature in the mode of atomizing spray;
3) water coolant indirect contact cooling: by through step 2) semicoke feeding cooling zone (3) that process makes itself and water coolant indirect contact lower the temperature;
4) oxidizing reaction: will through step 3) semicoke that processed sends into oxidation zone (4), makes it fully contact with air and carry out oxidizing reaction.
2. semicoke passivation technology, wherein step 1 as claimed in claim 1) after spraying cooling cooling, the temperature of semicoke is 100-110 DEG C, water content≤3%.
3. semicoke passivation technology, wherein step 2 as claimed in claim 1) after atomizing spray cooling, the temperature of semicoke is 70 DEG C, and water content is 7%-11%.
4. semicoke passivation technology, wherein step 3 as claimed in claim 1) after water coolant indirect contact cooling, the temperature of semicoke is 40-50 DEG C.
5. use technique as described in Claims 1-4 semicoke to be carried out to a semicoke passivation system for passivation reaction process, it is characterized in that, comprise and laterally setting gradually:
Chill zone (1), it comprises the opening for feed (11) sending semicoke to enter chill zone (1); The bottom of chill zone (1) has rotating disk, can control the time that semicoke rests on this district by speed of rotation; The top of chill zone (1) is provided with shower nozzle (12), to be sprayed on the semicoke of rotating disk by water coolant;
Spray district (2), its inside is provided with multiple atomizer, carries out atomizing spray to semicoke;
Cooling zone (3), has been evenly arranged many water pipes in it, water coolant, at described water Bottomhole pressure, carries out indirect heat exchange with semicoke;
Oxidation zone (4), is provided with blast inlet (41), can controls by described blast inlet the air capacity entering described oxidation zone (4), to control the degree of oxidation of semicoke;
Water supply installation, for chill zone (1), spray district (2), cooling zone (3) provide water coolant;
And,
Be arranged on the semicoke e Foerderanlage in chill zone (1), spray district (2), cooling zone (3) and oxidation zone (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510430361.4A CN105038898A (en) | 2015-07-21 | 2015-07-21 | Semicoke passivation technology and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510430361.4A CN105038898A (en) | 2015-07-21 | 2015-07-21 | Semicoke passivation technology and system |
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| CN105038898A true CN105038898A (en) | 2015-11-11 |
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| CN201510430361.4A Pending CN105038898A (en) | 2015-07-21 | 2015-07-21 | Semicoke passivation technology and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111617595A (en) * | 2019-02-28 | 2020-09-04 | 中国石化工程建设有限公司 | Method for starting active coke dry adsorption purification device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4249909A (en) * | 1979-05-30 | 1981-02-10 | Hydrocarbon Research, Inc. | Drying and passivating wet coals and lignite |
| DD255538A1 (en) * | 1986-10-30 | 1988-04-06 | Schwarze Pumpe Gas Veb | METHOD FOR DRY-INERTIZING AND COOLING BHT COKE |
| CN101781596A (en) * | 2009-01-19 | 2010-07-21 | 湖南华银能源技术有限公司 | Passivation process and passivation system of active coke |
| CN103060047A (en) * | 2012-12-21 | 2013-04-24 | 中国五环工程有限公司 | Semicoke passivation technology and semicoke passivation tower |
| CN103980973A (en) * | 2014-05-26 | 2014-08-13 | 湖南华银能源技术有限公司 | Semicoke passivating method |
| CN103980974A (en) * | 2014-05-29 | 2014-08-13 | 湖南华银能源技术有限公司 | Semi-coke passivation device and semi-coke passivation method adopting semi-coke passivation device |
| CN103980975A (en) * | 2014-05-29 | 2014-08-13 | 湖南华银能源技术有限公司 | Passivating device and method for semicoke |
-
2015
- 2015-07-21 CN CN201510430361.4A patent/CN105038898A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4249909A (en) * | 1979-05-30 | 1981-02-10 | Hydrocarbon Research, Inc. | Drying and passivating wet coals and lignite |
| DD255538A1 (en) * | 1986-10-30 | 1988-04-06 | Schwarze Pumpe Gas Veb | METHOD FOR DRY-INERTIZING AND COOLING BHT COKE |
| CN101781596A (en) * | 2009-01-19 | 2010-07-21 | 湖南华银能源技术有限公司 | Passivation process and passivation system of active coke |
| CN103060047A (en) * | 2012-12-21 | 2013-04-24 | 中国五环工程有限公司 | Semicoke passivation technology and semicoke passivation tower |
| CN103980973A (en) * | 2014-05-26 | 2014-08-13 | 湖南华银能源技术有限公司 | Semicoke passivating method |
| CN103980974A (en) * | 2014-05-29 | 2014-08-13 | 湖南华银能源技术有限公司 | Semi-coke passivation device and semi-coke passivation method adopting semi-coke passivation device |
| CN103980975A (en) * | 2014-05-29 | 2014-08-13 | 湖南华银能源技术有限公司 | Passivating device and method for semicoke |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111617595A (en) * | 2019-02-28 | 2020-09-04 | 中国石化工程建设有限公司 | Method for starting active coke dry adsorption purification device |
| CN111617595B (en) * | 2019-02-28 | 2022-04-05 | 中国石化工程建设有限公司 | Method for starting active coke dry adsorption purification device |
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