CN105481632A - Apparatus for continuously cracking beta-pinene to produce laurene - Google Patents
Apparatus for continuously cracking beta-pinene to produce laurene Download PDFInfo
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- CN105481632A CN105481632A CN201510869453.2A CN201510869453A CN105481632A CN 105481632 A CN105481632 A CN 105481632A CN 201510869453 A CN201510869453 A CN 201510869453A CN 105481632 A CN105481632 A CN 105481632A
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C5/00—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
- C07C5/22—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by isomerisation
- C07C5/27—Rearrangement of carbon atoms in the hydrocarbon skeleton
- C07C5/31—Rearrangement of carbon atoms in the hydrocarbon skeleton changing the number of rings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
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Abstract
The invention discloses an apparatus for continuously cracking beta-pinene to produce laurene. The apparatus comprises a charging pump, a vaporizer, a cracker, a heat exchanger, a cooler and a product collector which are sequentially connected; the charging port of the charging pump is connected with a raw material tank, the discharging port of the charging pump is connected with the upper end of the vaporizer through a guide tube, a nonvolatile matter collector is connected below the vaporizer, a gas mixing chamber is arranged above the vaporizer, the heat conduction material inlet and the heat conduction material outlet of the vaporizer are respectively connected with an eduction tube in front of and behind the eduction tube valve of the cracker, the gas mixing chamber is connected with the heat conduction material inlet of the heat exchanger, the heat conduction material outlet of the heat exchanger is connected with the charging port of the cracker, the charging port of the heat exchanger is connected with the discharging port of the cracker through a valve, and the heat exchanger is connected with the product collector. The apparatus has the advantages of low energy consumption, high reaction efficiency, uniform heating, low cost, high laurene output and realization of continuous cracking production of laurene.
Description
Technical field
The present invention relates to technical field of fine, a kind of beta-pinene continuous cracking produces the device of myrcene specifically.
Background technology
Myrcene is also known as myrcene, 7-methyl-3-methylene radical-1,6-octadiene etc., and molecular formula is: C
10h
16, molecular weight is: 136.23, has two conjugated double bonds and a single double bond in molecule, is chemical raw material important in perfumery industry and intermediate, as synthesis peppermint, and citral, geraniol, Geraniol, vernol and phantol etc.In colourless or pale yellow oily liquid body under myrcene normal temperature, can be dissolved in the middle of the organic solvents such as ethanol, ether, chloroform, and can be miscible with most of fragrance intermediates.It is fragrant that myrcene has strong fruital, the fragrance of a flower, blue or green perfume, the banksia rose and limette, due to the flavouring essence quality of its uniqueness, and, be widely used in the fields such as medicine, tobacco, food ingredients, perfume, makeup, perfumed soap, washing composition.The acquisition of myrcene has natural extract and synthetic two kinds of channels: natural myrcene can extract from the essential oil of the plants such as Folium Lauri nobilis, vervain, spiceleaf; Synthetic then mainly adopts thermal decomposition method, take beta-pinene as raw material, obtains through thermolysis.
Myrcene content in the essential oil of natural phant is little, far can not meet the requirement of perfume industry.The domestic and international industrial cracking mainly coming from beta-pinene, beta-pinene is present in turps, and China's turps resource is very abundant.The research and development of myrcene have great importance to the raising of beta-pinene resources development and utilization and added value in turps.In recent years, the research of investigator to myrcene production method is more, but less to the research of its production equipment.Produce in beta-pinene cracking in the device of myrcene, still have that energy consumption is high, production cost is high, it is uneven to be heated, yield poorly, the problem such as long reaction time.In recent years, along with the fast development of fragrance industry and cosmetic industry, the demand of myrcene is being increased year by year.Therefore, study a kind of low power consuming, the myrcene production equipment of low cost seems particularly important.
Summary of the invention
The object of the invention is to produce myrcene device Problems existing for current beta-pinene cracking, the production equipment that a kind of energy consumption is low, reaction efficiency is high, cost is low, myrcene output is high is provided.
In order to realize above object, the present invention is achieved through the following technical solutions:
Beta-pinene continuous cracking produces a device for myrcene, and comprise fresh feed pump, vaporizer, cracker, heat exchanger, refrigerating unit and product-collecting device, they connect successively, the opening for feed of described fresh feed pump connects raw material tank, the discharge port of fresh feed pump is connected with the upper end of vaporizer by conduit, described conduit is provided with electricradiator, non-volatile matter collector is connected below described vaporizer, also gas mixing chamber is provided with above vaporizer, the heat conduction material inlet of vaporizer is connected with the delivery line before and after the delivery line valve of cracker respectively with heat conduction material outlet, described gas mixing chamber is connected with the heat conduction material inlet of heat exchanger, the heat conduction material outlet of heat exchanger arranges and is connected with the opening for feed of cracker, the opening for feed of heat exchanger is connected with the discharge port of cracker by valve, described refrigerating unit comprises coil condenser and pipe bundle condenser, and is connected with heat exchanger successively, the lower end of coil condenser connects product-collecting device, and the upper end of described product-collecting device arranges evacuating valve and drain tap, and described evacuating valve is connected with vacuum pump, and described cracker is connected with power supply respectively with electricradiator.
Above beta-pinene continuous cracking produces the device of myrcene, is also provided with under meter above described fresh feed pump.
Above beta-pinene continuous cracking produces the device of myrcene, and the fresh feed pump discharge port of the upper end of described vaporizer arranges the shower nozzle being uniformly distributed aperture.
Above beta-pinene continuous cracking produces the device of myrcene, and described product-collecting device arranges more than 1.
Above beta-pinene continuous cracking produces the device of myrcene, and described vacuum pump is water ring vacuum pump.
Above beta-pinene continuous cracking produces the device of myrcene, and described cracker is snakelike cracking tube.
Above beta-pinene continuous cracking produces the device of myrcene, and the inside of described cracking tube is provided with catalyst layer, the electric heating device of the outer setting cracker of cracking tube.
Beta-pinene continuous cracking produces the principle of work of the device of myrcene:
During work, first open the power supply of the electric heating device of electricradiator and cracker, open fresh feed pump upper valve, open fresh feed pump, beta-pinene is controlled flow at 50 ~ 55kgh from raw material tank by under meter
-1through electricradiator, 80 ~ 100 DEG C are heated to raw material beta-pinene, open the valve of vacuum pump, be evacuated to-0.09 ~-0.10MPa and carry out vacuum vaporization, beta-pinene gas after vaporization is discharged from the top of vaporizer, nitrogen is added to gas mixing chamber and beta-pinene to vaporize and generate mixed gas, wherein nitrogen and the gas volume ratio generated of vaporizing are 1 ~ 2:1, and mixed gas is first heated to 500 ~ 550 DEG C by cracker again by heat exchanger and carries out scission reaction; Disconnect the power supply of electricradiator after gas cracking, control flow at 70 ~ 80kgh
-1open the valve on cracker and vaporizer, heat exchanger respectively, a split product part carries out vacuum vaporization through vaporizer to beta-pinene, enter gas mixing chamber after beta-pinene vaporization, another part tentatively cools through over-heat-exchanger, and the gas through preliminary cooling carries out water cooling through pipe bundle condenser and coil condenser more successively further, cool the liquid obtained, enter product-collecting device, open the valve of collector lower end, myrcene product can be collected.
Its purity of the above beta-pinene is more than 95%, and the output of product myrcene reaches more than 90%.
Advantage of the present invention and positively effect are:
(1) apparatus of the present invention can make full use of the product after cracking, namely a part can be used for beta-pinene vacuum vaporization by vaporizer and is cooled fast by cleavable product, a part can be heated mixed gas by heat exchanger, split product can be cooled fast again, beta-pinene continuous cracking can be realized and produce myrcene, effectively can reduce beta-pinene vaporization and cooling myrcene institute energy requirement, the requirement of fast cooling and efficient recovery heat energy can be reached, effectively overcome existing apparatus power consumption greatly, high in cost of production problem.
(2) because myrcene is straight chain unsaturated olefin, under the high temperature conditions extremely unstable, the myrcene that the cracking of this device generates can be cooled fast at vaporizer and heat exchange, and improve the output of myrcene, in product, myrcene content reaches more than 90%.
(3) cracker of this device is tubular type cracker, and gas is heated more even, cracking tube inside arranges catalyst layer, catalyst layer is provided with catalyzer, rate of cleavage can be accelerated and reduce cracking temperature well, thus saving energy consumption, improve production efficiency.
(4) apparatus of the present invention adopt water ring vacuum pump, the vacuum tightness of cracking system can not only be met, and can effectively adjust vacuum tightness output by frequency conversion, frequency conversion fresh feed pump collaborative under, ensure that the turbulivity of gas at cracking Bottomhole pressure, the effective residence time of control material molecule in cracking tube, thus the selectivity improving cracking.
(5) apparatus of the present invention have power consumption low, cost is low, be heated evenly, production efficiency is high, output high, can by beta-pinene continuous cracking produce myrcene, be adapted at large-scale promotion in enterprise.
Accompanying drawing explanation
Fig. 1 is the structural representation that beta-pinene continuous cracking of the present invention produces the device of myrcene.
In Reference numeral, 1-product-collecting device, 2-coil condenser, 3-pipe bundle condenser, 4-heat exchanger, 5-non-volatile matter collector, 6-vaporizer, 7-gas mixer, 8-electricradiator, 9-under meter, 10-fresh feed pump, 11-cracker, 12-power supply, 13-vacuum pump.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further described, but be not limited to the present invention and protect protection domain.
embodiment 1
As shown in Figure 1, beta-pinene continuous cracking produces the device of myrcene, and comprise fresh feed pump 10, vaporizer 6, cracker 11, heat exchanger 4, refrigerating unit and product-collecting device 1, they connect successively; The opening for feed of described fresh feed pump 10 connects raw material tank, and the discharge port of fresh feed pump 10 is connected by the upper end of conduit with vaporizer 6, and conduit is provided with electricradiator 8, is also provided with under meter 9 above fresh feed pump 10; Non-volatile matter collector 5 is connected below described vaporizer 6, gas mixing chamber 7 is also provided with above vaporizer 6, the heat conduction material inlet of vaporizer 6 is connected with the delivery line before and after the delivery line valve of cracker 11 respectively with heat conduction material outlet, and fresh feed pump 10 discharge port of the upper end of vaporizer 6 arranges the shower nozzle being uniformly distributed aperture; Described gas mixing chamber 7 is connected with the heat conduction material inlet of heat exchanger 4, and the heat conduction material outlet of heat exchanger 4 arranges and is connected with the opening for feed of cracker 11, and the opening for feed of heat exchanger 4 is connected by the discharge port of valve with cracker 11; Described cracker 11 is snakelike cracking tube, and cracking tube inside is provided with catalyst layer, the electric heating device of the outer setting cracker 11 of cracking tube; Described refrigerating unit comprises coil condenser 2 and pipe bundle condenser 3, and is connected with heat exchanger 4 successively, and the lower end of coil condenser 2 connects product-collecting device 1; Product-collecting device arranges 2, and the upper end of product-collecting device 1 arranges evacuating valve and drain tap, and described evacuating valve is connected with water ring vacuum pump 13, and described cracker 11 is connected with power supply 12 respectively with electricradiator 8.
Principle of work:
During work, first open the power supply of the electric heating device of electricradiator 8 and cracker 11, open fresh feed pump 10 upper valve, open fresh feed pump 10, by purity be 95% beta-pinene from raw material tank charging, control flow at 50kgh by under meter 9
-180 DEG C are heated to through electricradiator 8 pairs of raw material beta-pinenes, to fetch boiling water the valve of ring vacuum pump 13, be evacuated to-0.09MPa and carry out vacuum vaporization, beta-pinene gas after vaporization is discharged from the top of vaporizer 6, nitrogen is added to gas mixing chamber 7 vaporize with beta-pinene and generates mixed gas, it is 1:1 that the gas volume that wherein nitrogen and vaporizing generates compares, and mixed gas is first heated to 500 DEG C by cracker 11 again by heat exchanger 4 and carries out scission reaction; Disconnect the power supply of electricradiator 8 after gas cracking, control flow at 70kgh
-1open cracker 11 and the valve on vaporizer 6 and cracker 11 and heat exchanger 4 respectively, a split product part carries out vacuum vaporization through vaporizer 6 pairs of beta-pinenes, gas mixing chamber 7 is entered after beta-pinene vaporization, another part tentatively cools through over-heat-exchanger 4, gas through preliminary cooling carries out water cooling through pipe bundle condenser 3 and coil condenser 2 more successively further, cool the liquid obtained, enter product-collecting device 1, open the valve of collector 1 lower end, myrcene product can be collected, content>=92% of myrcene.
embodiment 2
As shown in Figure 1, beta-pinene continuous cracking produces the device of myrcene, and comprise fresh feed pump 10, vaporizer 6, cracker 11, heat exchanger 4, refrigerating unit and product-collecting device 1, they connect successively; The opening for feed of described fresh feed pump 10 connects raw material tank, and the discharge port of fresh feed pump 10 is connected by the upper end of conduit with vaporizer 6, and conduit is provided with electricradiator 8, is also provided with under meter 9 above fresh feed pump 10; Non-volatile matter collector 5 is connected below described vaporizer 6, gas mixing chamber 7 is also provided with above vaporizer 6, the heat conduction material inlet of vaporizer 6 is connected with the delivery line before and after the delivery line valve of cracker 11 respectively with heat conduction material outlet, and fresh feed pump 10 discharge port of the upper end of vaporizer 6 arranges the shower nozzle being uniformly distributed aperture; Described gas mixing chamber 7 is connected with the heat conduction material inlet of heat exchanger 4, and the heat conduction material outlet of heat exchanger 4 arranges and is connected with the opening for feed of cracker 11, and the opening for feed of heat exchanger 4 is connected by the discharge port of valve with cracker 11; Described cracker 11 is snakelike cracking tube, and cracking tube inside is provided with catalyst layer, the electric heating device of the outer setting cracker 11 of cracking tube; Described refrigerating unit comprises coil condenser 2 and pipe bundle condenser 3, and is connected with heat exchanger 4 successively, and the lower end of coil condenser 2 connects product-collecting device 1; Product-collecting device arranges 3, and the upper end of product-collecting device 1 arranges evacuating valve and drain tap, and described evacuating valve is connected with water ring vacuum pump 13, and described cracker 11 is connected with power supply 12 respectively with electricradiator 8.
Principle of work:
During work, first open the power supply of the electric heating device of electricradiator 8 and cracker 11, open fresh feed pump 10 upper valve, open fresh feed pump 10, by purity be 97% beta-pinene from raw material tank charging, control flow at 55kgh by under meter 9
-1100 DEG C are heated to through electricradiator 8 pairs of raw material beta-pinenes, to fetch boiling water the valve of ring vacuum pump 13, be evacuated to-0.10MPa and carry out vacuum vaporization, beta-pinene gas after vaporization is discharged from the top of vaporizer 6, nitrogen is added to gas mixing chamber 7 vaporize with beta-pinene and generates mixed gas, it is 2:1 that the gas volume that wherein nitrogen and vaporizing generates compares, and mixed gas is first heated to 550 DEG C by cracker 11 again by heat exchanger 4 and carries out scission reaction; Disconnect the power supply of electricradiator 8 after gas cracking, control flow at 80kgh
-1open cracker 11 and the valve on vaporizer 6 and cracker 11 and heat exchanger 4 respectively, a split product part carries out vacuum vaporization through vaporizer 6 pairs of beta-pinenes, gas mixing chamber 7 is entered after beta-pinene vaporization, another part tentatively cools through over-heat-exchanger 4, gas through preliminary cooling carries out water cooling through pipe bundle condenser 3 and coil condenser 2 more successively further, cool the liquid obtained, enter product-collecting device 1, open the valve of collector 1 lower end, myrcene product can be collected, content>=95% of myrcene.
Claims (7)
1. beta-pinene continuous cracking produces a device for myrcene, it is characterized in that: comprise fresh feed pump (10), vaporizer (6), cracker (11), heat exchanger (4), refrigerating unit and product-collecting device (1), they connect successively, the opening for feed of described fresh feed pump (10) connects raw material tank, the discharge port of fresh feed pump (10) is connected by the upper end of conduit with vaporizer (6), described conduit is provided with electricradiator (8), described vaporizer (6) below connects non-volatile matter collector (5), vaporizer (6) top is also provided with gas mixing chamber (7), the heat conduction material inlet of vaporizer (6) is connected with the delivery line before and after the delivery line valve of cracker (11) respectively with heat conduction material outlet, described gas mixing chamber (7) is connected with the heat conduction material inlet of heat exchanger (4), the heat conduction material outlet of heat exchanger (4) arranges and is connected with the opening for feed of cracker (11), the opening for feed of heat exchanger (4) is connected by the discharge port of valve with cracker (11), described refrigerating unit comprises coil condenser (2) and pipe bundle condenser (3), and is connected with heat exchanger (4) successively, the lower end of coil condenser (2) connects product-collecting device (1), the upper end of described product-collecting device (1) arranges evacuating valve and drain tap, described evacuating valve is connected with vacuum pump (13), and described cracker (11) is connected with power supply (12) respectively with electricradiator (8).
2. a kind of beta-pinene continuous cracking produces the device of myrcene according to claim 1, it is characterized in that: described fresh feed pump (10) top is also provided with under meter (9).
3. a kind of beta-pinene continuous cracking produces the device of myrcene according to claim 1, it is characterized in that: fresh feed pump (10) discharge port of the upper end of described vaporizer (6) arranges the shower nozzle being uniformly distributed aperture.
4. a kind of beta-pinene continuous cracking produces the device of myrcene according to claim 1, it is characterized in that: described product-collecting device (1) arranges more than 1.
5. a kind of beta-pinene continuous cracking produces the device of myrcene according to claim 1, it is characterized in that: described vacuum pump (13) is water ring vacuum pump.
6. a kind of beta-pinene continuous cracking produces the device of myrcene according to claim 1, it is characterized in that: described cracker (11) is snakelike cracking tube.
7. a kind of beta-pinene continuous cracking produces the device of myrcene according to claim 1, it is characterized in that: the inside of described cracking tube is provided with catalyst layer, the electric heating device of the outer setting cracker (11) of cracking tube.
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| CN201510869453.2A CN105481632B (en) | 2015-12-01 | 2015-12-01 | A kind of device of beta pinene continuous cracking production laurene |
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| CN201510869453.2A CN105481632B (en) | 2015-12-01 | 2015-12-01 | A kind of device of beta pinene continuous cracking production laurene |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105967970A (en) * | 2016-06-29 | 2016-09-28 | 江西省吉水县兴华天然香料有限公司 | Myrcene production system |
| CN106518596A (en) * | 2016-12-20 | 2017-03-22 | 广西壮族自治区林业科学研究院 | Cracking apparatus for producing myrcene by cracking Beta-pinene |
| CN107602322A (en) * | 2017-10-25 | 2018-01-19 | 广东松林香料有限公司 | Beta pinene thermal cracking produces the technique and its device of laurene |
| CN113336617A (en) * | 2021-06-04 | 2021-09-03 | 浙江正荣香料有限公司 | Method for generating myrcene by cracking beta-pinene |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105967970A (en) * | 2016-06-29 | 2016-09-28 | 江西省吉水县兴华天然香料有限公司 | Myrcene production system |
| CN105967970B (en) * | 2016-06-29 | 2018-11-23 | 江西省吉水县兴华天然香料有限公司 | A kind of production system of laurene |
| CN106518596A (en) * | 2016-12-20 | 2017-03-22 | 广西壮族自治区林业科学研究院 | Cracking apparatus for producing myrcene by cracking Beta-pinene |
| CN107602322A (en) * | 2017-10-25 | 2018-01-19 | 广东松林香料有限公司 | Beta pinene thermal cracking produces the technique and its device of laurene |
| CN113336617A (en) * | 2021-06-04 | 2021-09-03 | 浙江正荣香料有限公司 | Method for generating myrcene by cracking beta-pinene |
| CN113336617B (en) * | 2021-06-04 | 2022-05-24 | 浙江正荣香料有限公司 | Method for generating myrcene by cracking beta-pinene |
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Effective date of registration: 20180912 Address after: 537421 Yulin, the Guangxi Zhuang Autonomous Region, Beiliu, Darun Town, four villages, six Cen highway Patentee after: Guangxi Beiliu Zhaozhou Forest Products Co., Ltd. Address before: 530002 No. 23 Yongwu Road, Nanning, the Guangxi Zhuang Autonomous Region Patentee before: Inst. of Forestry Science, Guangxi Zhuang Autonomous Region |