CN103666540A - Dehydrating agent for medium-and-low-temperature coal tar and application of dehydrating agent - Google Patents
Dehydrating agent for medium-and-low-temperature coal tar and application of dehydrating agent Download PDFInfo
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- CN103666540A CN103666540A CN201310619801.1A CN201310619801A CN103666540A CN 103666540 A CN103666540 A CN 103666540A CN 201310619801 A CN201310619801 A CN 201310619801A CN 103666540 A CN103666540 A CN 103666540A
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- coal tar
- dewatering agent
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Abstract
The invention relates to a dehydrating agent for medium-and-low-temperature coal tar and an application of the dehydrating agent. The dehydrating agent comprises the following components in parts by mass: 0.5-1 part of alkyl phenolic resin polyoxyethylene ether, 1.5-4 parts of phenol amine aldehyde resin segmented polyoxyethylene polypropylene ether and 2.5-5 parts of methanol, which are compounded, wherein the molecular weight of each polyether is 5000-8000. When in use, 0.5-1 kg of the dehydrating agent needs to be added into each ton of the medium-and-low-temperature coal tar, so that the water content of the coal tar is reduced to be within 4% and meets the water content requirement of the finished coal tar. The dehydrating agent has the advantages of high dehydrating speed, low required temperature, small dosage and low cost; the enterprise cost can be reduced.
Description
Technical field
The present invention relates to a kind of dewatering agent for middle coalite tar and utilisation technology thereof, be specifically related to middle coalite tar dewatering agent and application, it is mainly used in middle coalite tar dehydration.
Background technology
Coal tar is a kind of mixture of complexity, and its main component is apolar substance, immiscible with water.Moisture in coal tar is fine liquid particles shape and is closely wrapped up by coal tar, and due to the existence of the superfine coal dust of particle, coke powder, pyrolytic carbon, contained humidity and coal tar form stable suspension.Therefore, the difficulty of coal tar dehydration is very large.And during coal tar processing, need be heated to 400 ℃ of left and right, but the just vaporization in the time of 100 ℃ of coal tar contained humidity can produce very high pressure at 400 ℃.This may cause pipeline and flange explosion, even causes fire.In addition, distillation tower internal pressure is relatively high, has destroyed original distillation balance, has reduced the separation efficiency of coal tar, affects quality product.So coal tar dehydration technique becomes the key factor that affects coal tar following process.
Coal tar breaking dehydrating method has multiple, is mainly summarized as physical method, biological method and chemical process.Emulsion splitter breaking emulsion and dewatering belongs to chemical process.Than crude oil demulsification dehydration, to the breaking emulsion and dewatering report of coal tar few, also insufficient to probing into of the influence factor of breaking emulsion and dewatering and mechanism.And the required dewatering agent of the coal tar in the different places of production is also different.In the situation that guaranteeing product quality, develop or optimize a kind of middle coalite tar ammoniacal liquor separating agent, both improve the energy consumption of product quality and output, reduction ammonia still and interchanger, the obstruction of minimizing ammonia spray nozzle, can improve again working ability, reduction plant energy consumption, the minimizing potential safety hazard of tar deep processing device.Therefore there is important realistic meaning in Dui Lantanhe tar processing enterprise.
Summary of the invention
The technical problem that dehydration temperaturre is high, dewatering agent consumption is large, dewatering time is long and energy consumption is high existing in coalite tar dehydration during the present invention will solve, provides middle coalite tar dewatering agent and application that in a kind of being applicable to, coalite tar is quick, less energy-consumption is dewatered.
Solving the problems of the technologies described above adopted technical scheme is: middle coalite tar dewatering agent, it is characterized in that: it is by the alkyl phenolic resin Soxylat A 25-7 of 0.5～1 mass parts, the phenol amine aldehyde resin block polyoxyethylene poly-oxygen propylene aether of 1.5～4 mass parts and mass parts are composite composition of methyl alcohol of above-mentioned two kinds of polyethers mass parts sums, and the molecular weight of above-mentioned two kinds of polyethers is all 5000～8000.
Described middle coalite tar dewatering agent, is characterized in that: it is by composite composition of methyl alcohol of the alkyl phenolic resin Soxylat A 25-7 of 0.5 mass parts and the phenol amine aldehyde resin block polyoxyethylene poly-oxygen propylene aether of 3 mass parts and 3.5 mass parts.
The application of described middle coalite tar dewatering agent in middle coalite tar dehydration; Described middle coalite tar is temperature at the coal tar of 600～800 ℃, density 1.0705 g.cm
-3.
Middle coalite tar is heated to 60～80 ℃, adds while stirring coal tar dewatering agent, the coal tar dehydration dosage adding in coal tar per ton is 0.5～1kg, standing 4～12 hours of constant temperature.
Advantage of the present invention is: coal tar dewatering agent of the present invention is applicable to coalite tar dehydration in North Shaanxi, dewatering agent consumption is few, and temperature required low, dewatering agent is cheap, can make coal tar moisture be down to below 4% by 11.4%, meet the requirement of readymade coal tar.Compare with existing dewatering, have advantages of that dewatering speed is fast, cost is low, energy consumption is low.
Embodiment
Below in conjunction with embodiment, the present invention is described in more detail, but the invention is not restricted to following these embodiment.
Embodiment 1
The preparation 100g coal tar dewatering agent of take is example, and alkyl phenolic resin Soxylat A 25-7 is 0.5 mass parts, and phenol amine aldehyde resin block polyoxyethylene poly-oxygen propylene aether is 1.5 mass parts, and methyl alcohol is 2 mass parts.Concrete raw material is composed as follows:
Alkyl phenolic resin Soxylat A 25-7 12.5g
Phenol amine aldehyde resin block polyoxyethylene poly-oxygen propylene aether 37.5g
Methyl alcohol 50g
The preparation method of above-mentioned coal tar dewatering agent is: the alkyl phenolic resin Soxylat A 25-7 that is 5000 by 12.5g molecular weight joins in 50g methyl alcohol, shake up, adding 37.5g molecular weight is 5000 phenol amine aldehyde resin block polyoxyethylene poly-oxygen propylene aether again, fully stir and make it completely even, be prepared into middle coalite tar dewatering agent.
Described alkyl phenolic resin Soxylat A 25-7, is provided by Jiangsu Hai'an Petrochemical Plant.Phenol amine aldehyde resin block polyoxyethylene poly-oxygen propylene aether, by Jinan, Wan He water treatment company provides.
Embodiment 2
The preparation 100g coal tar dewatering agent of take is example, and alkyl phenolic resin Soxylat A 25-7 is 0.5 mass parts, and phenol amine aldehyde resin block polyoxyethylene poly-oxygen propylene aether is 3 mass parts, and methyl alcohol is 3.5 mass parts.Concrete raw material is composed as follows:
Alkyl phenolic resin Soxylat A 25-7 7.14g
Phenol amine aldehyde resin block polyoxyethylene poly-oxygen propylene aether 42.86g
Methyl alcohol 50g
The molecular weight of the polyethers of above-mentioned two kinds is equal 6000.Buy producer with embodiment 1.
The preparation method of above-mentioned middle coalite tar dewatering agent is identical with embodiment 1.
Embodiment 3
The preparation 100g coal tar dewatering agent of take is example, and alkyl phenolic resin polyoxyethylene polyethers is 1 mass parts, and phenol amine aldehyde resin block polyoxyethylene poly-oxygen propylene aether is 1.5 mass parts, and methyl alcohol is 2.5 mass parts.Concrete raw material is composed as follows:
Alkyl phenolic resin Soxylat A 25-7 20g
Phenol amine aldehyde resin block polyoxyethylene poly-oxygen propylene aether 30g
Methyl alcohol 50g
The molecular weight of the polyethers of above-mentioned two kinds is 8000.Buy producer with embodiment 1.
The preparation method of above-mentioned middle coalite tar dewatering agent is identical with embodiment 1.
Embodiment 4
The preparation 100g coal tar dewatering agent of take is example, and alkyl phenolic resin Soxylat A 25-7 is 1 mass parts, phenol amine aldehyde resin block polyoxyethylene poly-oxygen propylene aether 4 mass parts, and methyl alcohol is 5 mass parts.Concrete raw material is composed as follows:
Alkyl phenolic resin Soxylat A 25-7 10g
Phenol amine aldehyde resin block polyoxyethylene poly-oxygen propylene aether 40g
Methyl alcohol 50g
The preparation method of above-mentioned middle coalite tar dewatering agent is identical with embodiment 1.
The molecular weight of the polyethers of above-mentioned two kinds is equal 5000; Buy producer with embodiment 1.
The present invention is not limited only to the numerical value in above-described embodiment, so long as alkyl phenolic resin Soxylat A 25-7 mass parts all can at 0.5～1 part, the molecular weight of 1.5～4 parts, the two kinds polyethers of mass parts of phenol amine aldehyde resin block polyoxyethylene poly-oxygen propylene aether in 5000～8000 scopes.
Embodiment 5
The application of the coal tar dewatering agent of embodiment 1 preparation in coal tar dehydration.Its concrete using method is as follows:
Coal tar is heated to 60 ℃, adds coal tar dewatering agent and mix, the add-on 0.5kg of dewatering agent in coal tar per ton, standing 4 hours of constant temperature.It is 2.13% that the volumetry of employing karl Fischer 852 moisture content testers records water ratio.
The coal tar (600～800 ℃) that when above-mentioned middle coalite tar comes from the North Shaanxi dry distillation of coal, low temperature, middle temperature producer produce, density 1.0705 g.cm
-3.
Embodiment 6
The application of the coal tar dewatering agent of embodiment 2 preparations in coal tar dehydration.Its concrete using method is as follows:
Coal tar is heated to 60 ℃, adds coal tar dewatering agent and mix, the add-on 0.6kg of dewatering agent in coal tar per ton, standing 6 hours of constant temperature.It is 1.89% that the volumetry of employing karl Fischer 852 moisture content testers records water ratio.
The middle coalite tar of above-mentioned employing is identical with embodiment 5.
Embodiment 7
The application of the coal tar dewatering agent of embodiment 3 preparations in coal tar dehydration.Its concrete using method is as follows:
Coal tar is heated to 70 ℃, adds coal tar dewatering agent and mix, the add-on 0.8kg of dewatering agent in coal tar per ton, standing 6 hours of constant temperature.It is 2.04% that the volumetry of employing karl Fischer 852 moisture content testers records water ratio.
The middle coalite tar of above-mentioned employing is identical with embodiment 5.
Embodiment 8
The application of the coal tar dewatering agent of embodiment 4 preparations in coal tar dehydration.Its concrete using method is as follows:
Coal tar is heated to 80 ℃, adds coal tar dewatering agent and mix, the add-on 1kg of dewatering agent in coal tar per ton, standing 12 hours of constant temperature.It is 2.46% that the volumetry of employing karl Fischer 852 moisture content testers records water ratio.
The middle coalite tar of above-mentioned employing is identical with embodiment 5.
comparative example
According to the mass percent of the phenol amine aldehyde resin block polyoxyethylene poly-oxygen propylene aether 50% of molecular weight 6000, methyl alcohol 50%, form, get 50g phenol amine aldehyde resin block polyoxyethylene poly-oxygen propylene aether, 50g methyl alcohol, mix, be prepared into coal tar dewatering agent 100g.Coal tar is heated to 60 ℃, adds prepared coal tar dewatering agent, fully mix, in coal tar per ton, the add-on of coal tar dewatering agent is 1kg, standing 12 hours of constant temperature.It is 5.06% that the volumetry of employing karl Fischer 852 moisture content testers records water ratio.Visible, do not add coal tar dewatering agent centering coalite tar dehydrating effect prepared by alkyl phenolic resin Soxylat A 25-7 poor, its water content can not meet the require index of readymade coal tar to water content.
Claims (4)
1. coalite tar dewatering agent in, it is characterized in that: it is by the alkyl phenolic resin Soxylat A 25-7 of 0.5～1 mass parts, the phenol amine aldehyde resin block polyoxyethylene poly-oxygen propylene aether of 1.5～4 mass parts and mass parts are composite composition of methyl alcohol of above-mentioned two kinds of polyethers mass parts sums, and the molecular weight of above-mentioned two kinds of polyethers is all 5000～8000.
2. middle coalite tar dewatering agent according to claim 1, is characterized in that: it is by composite composition of methyl alcohol of the alkyl phenolic resin Soxylat A 25-7 of 0.5 mass parts and the phenol amine aldehyde resin block polyoxyethylene poly-oxygen propylene aether of 3 mass parts and 3.5 mass parts.
3. middle coalite tar dewatering agent according to claim 1 and 2, is characterized in that: the application of this coal tar dewatering agent in middle coalite tar dehydration; Described middle coalite tar is temperature at the coal tar of 600～800 ℃, density 1.0705 g.cm
-3.
4. the application of middle coalite tar dewatering agent according to claim 3 in middle coalite tar dehydration, it is characterized in that: middle coalite tar is heated to 60～80 ℃, add while stirring coal tar dewatering agent, the coal tar dehydration dosage adding in coal tar per ton is 0.5～1kg, standing 4～12 hours of constant temperature.
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| CN201310619801.1A CN103666540B (en) | 2013-11-29 | 2013-11-29 | Middle coalite tar dewatering agent and application |
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| CN201310619801.1A CN103666540B (en) | 2013-11-29 | 2013-11-29 | Middle coalite tar dewatering agent and application |
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Cited By (3)
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| CN107937018A (en) * | 2017-10-25 | 2018-04-20 | 马鞍山拓锐金属表面技术有限公司 | A kind of preparation method of molecular sieve type Coal tar dehydrant |
| CN108276571A (en) * | 2017-12-25 | 2018-07-13 | 威海翔泽新材料科技有限公司 | A kind of preparation of the dedicated efficient dehydration of tar agent of coking of coal |
| CN108998077A (en) * | 2018-08-17 | 2018-12-14 | 宁波敬业控股集团有限公司 | Coal tar dehydrant and preparation method thereof |
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| CN108276571A (en) * | 2017-12-25 | 2018-07-13 | 威海翔泽新材料科技有限公司 | A kind of preparation of the dedicated efficient dehydration of tar agent of coking of coal |
| CN108998077A (en) * | 2018-08-17 | 2018-12-14 | 宁波敬业控股集团有限公司 | Coal tar dehydrant and preparation method thereof |
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