CN102268237A - Gas-phase heat conducting oil and preparation process thereof - Google Patents
Gas-phase heat conducting oil and preparation process thereof Download PDFInfo
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- CN102268237A CN102268237A CN2011101499028A CN201110149902A CN102268237A CN 102268237 A CN102268237 A CN 102268237A CN 2011101499028 A CN2011101499028 A CN 2011101499028A CN 201110149902 A CN201110149902 A CN 201110149902A CN 102268237 A CN102268237 A CN 102268237A
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Abstract
The invention discloses a gas-phase heat conducting oil and a preparation process thereof. The gas-phase heat conducting oil comprises alkyl diphenyl and an isomer compound thereof. The preparation method of the gas-phase heat conducting oil comprises the following steps: 1, selecting a raw material, wherein the selected raw material is a tower bottom material behind a catalytic reforming device in the whole petroleum refining process, or a polyester production raw material p-xylene device tower bottom material or a hydrogenation raw material for producing an ethylene byproduct by high temperature cracking; 2, extracting arene, wherein in the step, chemical products such as benzene, dimethylbenzene and the like are obtained, and the rest product is the primary raw material of the gas-phase heat conducting oil; and 3, precisely rectifying and purifying, namely, purifying the primary raw material obtained in the step 2, selecting fractions of 240 DEG C-270 DEG C, feeding the fractions into a high-efficiency precise rectifying tower for further rectification, and cutting narrow fractions of 252 DEG C-258 DEG C so as to obtain the final gas-phase heat conducting oil product. The gas-phase heat conducting oil product can completely replace the existing biphenyl-phenoxybenzene products (foreign gas-phase heat conducting oils such as vp-1, DowthermA, ThermS, ThermS-300 and the like).
Description
Technical field:
The present invention relates to the thermal conduction technical field, being specially provides a kind of gas phase thermal oil and preparation method thereof.
Background technology:
The biphenyl-biphenyl ether mixtures that adopt heat as the gas phase thermal barrier more in traditional gas phase thermal conductivity.But the biphenyl-biphenyl ether product (such as: external vapour phase thermal oil such as vp-1, DowthermA, ThermS, ThermS-300) have very obvious defects:
1, environment is polluted.
Biphenyl-biphenyl ether mixture has unpleasant foul odour, add in the high temperature spinning and to pine for, because the perviousness of biphenyl-biphenyl ether is high, even sealing such as container, flange, valve is very tight, but still the gas leakage of part biphenyl-biphenyl ether mixture arranged, pollute to the environment of plant, cause a hidden trouble to safety in production.A kind of environmental type gas phase of user's active demand thermal oil replaces the biphenyl-biphenyl ether product.
2, ensure the problem of worker health
Though biphenyl-biphenyl ether mixture toxicity belongs to the low toxicity scope human health is constituted potential threat, specifically as follows:
Biphenyl-biphenyl ether mixture acute toxicity: LD
50(2-2.5g/kg rat oral),
Epidermis contact toxicity: LD
505-6g/kg (rat oral)
Material toxicity:
Biphenyl acute toxicity: LD
50(3.28g/kg rat oral)
Biphenyl ether acute toxicity: LD
50(3.99g/kg rat oral),
Conclusion: mucous membrane and skin are had hormesis, and workpeople's an urgent demand is with a kind of nontoxic, and the gas phase thermal oil that health is not had influence replaces deleterious biphenyl-biphenyl ether product.
3, needs safe and convenient to use
The biphenyl-biphenyl ether mixture zero pour is used and will be paid close attention at north of china in winter or cold district up to 12 ℃, will accompany heat (wasting energy) to equipment and pipeline in case of necessity, will pay close attention to safety during driving, therefore uses to have certain limitation.
Biphenyl-biphenyl ether product perviousness is very strong, and the biphenyl-biphenyl ether that leaks out is easy to vaporization, meets fire and just causes fire easily.
Because these of biphenyl-biphenyl ether product use disadvantage, make its a lot of factories cause a lot of catching fire and explosion hazard at home and abroad, caused very big threat for the people's the life security and the safety in production of factory.Need a kind of easy to usely, safe and reliable non-hazardous gas phase thermal oil product replaces the biphenyl-biphenyl ether product.
4, reduce the needs of factory cost
The biphenyl-biphenyl ether mixture use cost is very high, and average ton price has increased factory cost about 30,000 yuan/ton.
Summary of the invention:
The technical problem to be solved in the present invention provides a kind of gas phase thermal oil product, and the processing method for preparing this a kind of gas phase thermal oil product, a kind of gas phase thermal oil can substitute existing biphenyl-biphenyl ether mixture product, satisfies the specific requirement that thermal conductance is used.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
Gas phase thermal oil provided by the invention, composition comprises the compound of alkyl diphenyl base and isomer thereof.
The preparation technology of this gas phase thermal oil comprises the steps:
One, raw material is chosen, and it is the hydrogenating materials that the tower bed material behind the catalytic reforming unit or production of polyester raw material p-Xylol device tower bed material or Pintsch process are produced the ethylene by-product product in the petroleum refining process that this step is chosen raw material.Above raw material contains a large amount of aromatic hydrocarbons.
Two, aromatic hydrocarbons extracts, and this step obtains Chemicals such as benzene and dimethylbenzene, and surplus products promptly get the preliminary raw material of gas phase thermal oil.
Three, precise distillation is purified, this step is purified the preliminary raw material that obtains in the step 2, chooses 240 ℃ of-270 ℃ of cuts, more above-mentioned cut is sent the high-efficiency and precision rectifying tower to carry out a step rectifying again, cut 252 ℃ of-258 ℃ of narrow fractions, final gas phase thermal oil product promptly.
The physical index of gas phase thermal oil of the present invention such as following table:
Gas phase thermal oil thermal characteristics contrast of the present invention;
Gas phase thermal oil of the present invention and the contrast of U.S. Dowtherm A vapour pressure
Product pour point and flash-point and Dowtherm A contrast after the gas phase heat conduction of the present invention:
| Name of product | Pour point ℃ | Flash-point ℃ |
| Gas phase thermal oil of the present invention | ≤-18 | ≥112 |
| Dowtherm?A | 12 | ≥110 |
Product toxicity and smell and Dowtherm A contrast after the gas phase heat conduction of the present invention:
| Name of product | Smell | Toxicity |
| Gas phase thermal oil of the present invention | There is not any smell | Nontoxic |
| Dowtherm?A | Foul odour | Poisonous |
Positively effect of the present invention is:
This products material is through hydrogenation unit, the highly efficient distilling device obtains gas phase thermal oil product, other intermediates are the petrochemical complex useful products, do not produce waste gas and waste residue in the production process, there is not pollutent to produce, water consumption seldom, water system is an internal recycle, belongs to " eat do press clean " process for cleanly preparing.Production process meets national energy-saving and emission-reduction policy, does not cause environmental pollution in the production process, belongs to process for cleanly preparing.
Measure and toxicity test through physico-chemical parameter, gas phase thermal oil provided by the invention meets the condition that substitutes biphenyl-biphenyl ether gas phase thermal oil fully, and is nonpoisonous and tasteless, is ideal environment-friendly type gas phase thermal oil.
Use this gas phase thermal oil, be applied to existing alternative field, need not to transform existing installation, industrial upgrades are convenient.
Embodiment:
Gas phase thermal oil provided by the invention, composition comprises the compound of alkyl diphenyl base and isomer thereof.
The preparation technology of this gas phase thermal oil comprises the steps:
One, raw material is chosen, and it is the hydrogenating materials that the tower bed material behind the catalytic reforming unit or production of polyester raw material p-Xylol device tower bed material or Pintsch process are produced the ethylene by-product product in the petroleum refining process that this step is chosen raw material.Above raw material contains a large amount of aromatic hydrocarbons.
Two, aromatic hydrocarbons extracts, and this step obtains Chemicals such as benzene and dimethylbenzene, and surplus products promptly get the preliminary raw material of gas phase thermal oil.
Three, precise distillation is purified, this step is purified the preliminary raw material that obtains in the step 2, chooses 240 ℃ of-270 ℃ of cuts, more above-mentioned cut is sent the high-efficiency and precision rectifying tower to carry out a step rectifying again, cut 252 ℃ of-258 ℃ of narrow fractions, final gas phase thermal oil product promptly.
The product application of this gas phase thermal oil is satisfied the replacement of biphenyl-biphenyl ether mixture as the gas phase thermal barrier fully in the spinning thermal conductivity, and surmounts the technical indicator of the said products.
Claims (2)
1. gas phase thermal oil, composition comprises the compound of alkyl diphenyl base and isomer thereof.
2. the preparation technology of gas phase thermal oil comprises the steps: according to claim 1
One, raw material is chosen, and it is the hydrogenating materials that the tower bed material behind the catalytic reforming unit or production of polyester raw material p-Xylol device tower bed material or Pintsch process are produced the ethylene by-product product in the petroleum refining process that this step is chosen raw material.
Two, aromatic hydrocarbons extracts, and this step obtains Chemicals such as benzene and dimethylbenzene, and surplus products promptly get the preliminary raw material of gas phase thermal oil.
Three, precise distillation is purified, this step is purified the preliminary raw material that obtains in the step 2, chooses 240 ℃ of-270 ℃ of cuts, more above-mentioned cut is sent the high-efficiency and precision rectifying tower to carry out a step rectifying again, cut 252 ℃ of-258 ℃ of narrow fractions, final gas phase thermal oil product promptly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101499028A CN102268237A (en) | 2011-06-07 | 2011-06-07 | Gas-phase heat conducting oil and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101499028A CN102268237A (en) | 2011-06-07 | 2011-06-07 | Gas-phase heat conducting oil and preparation process thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102268237A true CN102268237A (en) | 2011-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101499028A Pending CN102268237A (en) | 2011-06-07 | 2011-06-07 | Gas-phase heat conducting oil and preparation process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104456695A (en) * | 2013-09-17 | 2015-03-25 | 陈有孝 | Novel energy-saving electric heater |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01311185A (en) * | 1988-06-09 | 1989-12-15 | Nippon Oil Co Ltd | Heat transfer oil composition |
| CN1202515A (en) * | 1997-06-17 | 1998-12-23 | 吴县市东海化工厂 | Process for regenerating thermal conductive oil biphenyl-biphenyl ether mixture |
| CN1546597A (en) * | 2003-12-08 | 2004-11-17 | 山东恒利石油化工有限公司 | Synthetic heat conductive oil for industrial use and preparation method |
| CN1803997A (en) * | 2005-12-12 | 2006-07-19 | 中国石油化工集团公司 | Method for preparing base oil of heat transfer oil |
-
2011
- 2011-06-07 CN CN2011101499028A patent/CN102268237A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01311185A (en) * | 1988-06-09 | 1989-12-15 | Nippon Oil Co Ltd | Heat transfer oil composition |
| CN1202515A (en) * | 1997-06-17 | 1998-12-23 | 吴县市东海化工厂 | Process for regenerating thermal conductive oil biphenyl-biphenyl ether mixture |
| CN1546597A (en) * | 2003-12-08 | 2004-11-17 | 山东恒利石油化工有限公司 | Synthetic heat conductive oil for industrial use and preparation method |
| CN1803997A (en) * | 2005-12-12 | 2006-07-19 | 中国石油化工集团公司 | Method for preparing base oil of heat transfer oil |
Non-Patent Citations (2)
| Title |
|---|
| 刘福洲，陈俊杰: "催化裂解轻油抽出芳烃生产导热油的研究", 《辽宁化工》 * |
| 郭玉等: "国内外导热油的研究进展", 《河北化工》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104456695A (en) * | 2013-09-17 | 2015-03-25 | 陈有孝 | Novel energy-saving electric heater |
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Application publication date: 20111207 |