CN110734421A - Safety production device for maltol - Google Patents
Safety production device for maltol Download PDFInfo
- Publication number
- CN110734421A CN110734421A CN201911244023.6A CN201911244023A CN110734421A CN 110734421 A CN110734421 A CN 110734421A CN 201911244023 A CN201911244023 A CN 201911244023A CN 110734421 A CN110734421 A CN 110734421A
- Authority
- CN
- China
- Prior art keywords
- emergency
- valve
- chlorine
- chlorination kettle
- chlorination
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- XPCTZQVDEJYUGT-UHFFFAOYSA-N 3-hydroxy-2-methyl-4-pyrone Chemical compound CC=1OC=CC(=O)C=1O XPCTZQVDEJYUGT-UHFFFAOYSA-N 0.000 title claims abstract description 22
- HYMLWHLQFGRFIY-UHFFFAOYSA-N Maltol Natural products CC1OC=CC(=O)C1=O HYMLWHLQFGRFIY-UHFFFAOYSA-N 0.000 title claims abstract description 11
- 229940043353 maltol Drugs 0.000 title claims abstract description 11
- 238000005660 chlorination reaction Methods 0.000 claims abstract description 75
- XPFVYQJUAUNWIW-UHFFFAOYSA-N furfuryl alcohol Chemical compound OCC1=CC=CO1 XPFVYQJUAUNWIW-UHFFFAOYSA-N 0.000 claims abstract description 69
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 48
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 48
- 239000000460 chlorine Substances 0.000 claims abstract description 48
- 238000003860 storage Methods 0.000 claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 20
- 239000007921 spray Substances 0.000 claims description 7
- 238000005507 spraying Methods 0.000 abstract description 11
- 238000001514 detection method Methods 0.000 abstract description 10
- 239000002341 toxic gas Substances 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 5
- 239000003507 refrigerant Substances 0.000 abstract description 5
- 239000003513 alkali Substances 0.000 abstract description 4
- 230000000630 rising effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 19
- YIKYNHJUKRTCJL-UHFFFAOYSA-N Ethyl maltol Chemical compound CCC=1OC=CC(=O)C=1O YIKYNHJUKRTCJL-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 229940093503 ethyl maltol Drugs 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- GBMDVOWEEQVZKZ-UHFFFAOYSA-N methanol;hydrate Chemical compound O.OC GBMDVOWEEQVZKZ-UHFFFAOYSA-N 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D309/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings
- C07D309/34—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
- C07D309/36—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with oxygen atoms directly attached to ring carbon atoms
- C07D309/40—Oxygen atoms attached in positions 3 and 4, e.g. maltol
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
Abstract
The invention discloses a safety production device of maltol, which detects the temperature in a chlorination kettle through a temperature sensor, when the temperature exceeds the limit, controls a linkage control valve and a second linkage control valve to act to reduce the raw material supply and prevent the temperature from rising in steps through a controller, when the temperature reaches a safety production limit, controls a emergency cut valve, a second emergency cut valve and a third emergency cut valve through the controller, cuts off the supply of furfuryl alcohol and chlorine, synchronously starts an emergency cooling system, conveys a refrigerant to a jacket and an inner coil of a chlorination kettle body, opens an emergency emptying valve, transfers the material in the chlorination kettle to an emergency storage tank, prevents accidental production accidents, ensures safety production, and alarms when a chlorine detection alarm device detects that the concentration of chlorine leaked in the air reaches an upper limit, the controller controls a spraying system to carry out spraying operation, absorbs toxic gas in the air in a mode of spraying alkali liquor, and prevents the toxic gas from diffusing.
Description
Technical Field
The invention relates to the technical field of maltol production devices, in particular to a safe production device for maltol.
Background
In the production of methyl and ethyl maltol, furfural is used as the raw material in the synthesis route, which has the advantages of easily available raw materials, simple production process, low production cost, less three wastes, easily-achieved conditions and the like, so that the method is widely applied to .
Wherein the technical process of the chlorination working section comprises the step of chloridizing and isomerizing the Grignard product furfuryl alcohol in a methanol water solution at low temperature to obtain an intermediate product. In the existing industrial production, chlorination reaction is carried out in a chlorination kettle, the temperature requirement of the chlorination reaction is high, the dripping temperature of the chlorination kettle is required to be controlled below 18 ℃ below zero, the reaction temperature in the process is required to be controlled between 6 ℃ below zero and 12 ℃ below zero, and the high requirement on the proportion of the chlorine and furfuryl alcohol serving as reactants is also achieved.
The prior art focuses on improving the utilization rate of raw materials in the related research of a chlorination kettle, for example, a chlorination reaction device in ethyl maltol production is claimed in Chinese patent ZL201010602974.9, a chlorine inlet valve is arranged at the bottom of the chlorination kettle, a feed inlet is arranged at the top of the chlorination kettle, materials in the chlorination kettle rotate to flow downwards, chlorine is not easy to escape, the utilization rate of the raw materials is high, and the product yield is improved.
Disclosure of Invention
The invention aims to provide a safe production device of maltol (including ethyl maltol) aiming at the problems that the prior chlorination kettle has fewer safe production measures and is not systematic.
The technical scheme includes that the safety production device of maltol comprises a chlorination kettle body, a feed inlet is formed in an end cover of the top of the chlorination kettle body, the feed inlet is connected with a furfuryl alcohol metering tank through a second pipeline, the furfuryl alcohol metering tank is connected with a furfuryl alcohol storage tank through a second pipeline, the safety production device is characterized in that a emergency cut-off valve and a linkage control valve are arranged on a second pipeline, a second emergency cut-off valve is arranged on the second pipeline, a chlorine valve is arranged at the bottom of the chlorination kettle body, the chlorine valve is connected with a chlorine buffer bottle through a third pipeline, a third emergency cut-off valve and a second linkage control valve are arranged on the third pipeline, a pressure sensor is arranged at the top of the chlorination kettle, a plurality of temperature sensors are uniformly distributed on the side wall of the chlorination kettle, an emergency emptying valve is arranged at the bottom of the chlorination kettle, the emergency emptying valve is connected with an emergency storage tank through a fourth pipeline, the chlorination kettle safety production device further comprises an emergency cooling system, the emergency cooling system comprises a storage tank, the emergency cooling system is respectively connected with an alkali liquor storage tank, a second spray control valve assembly, a second spray control system is electrically connected with the chlorination kettle, and a chlorine detection system, the emergency cooling system is electrically connected with a chlorine control system, and a chlorine control system, the second spray system, the alkali liquor detection system is electrically connected with the second spray system, the emergency cooling system is connected with the chlorination kettle, the emergency cooling system is connected with the chlorination kettle.
The temperature in the chlorination kettle is detected by a temperature sensor, when the temperature in the chlorination kettle exceeds minus 7 ℃, the controller controls the linkage control valve to act so as to prevent the temperature from further increasing , at the same time, the controller also controls the linkage control valve to act so as to reduce the supply of the furfuryl alcohol and ensure the feeding proportion of the furfuryl alcohol and the chlorine, when the temperature rises , the safety production limit is reached, the emergency cut-off valve, the second emergency cut-off valve and the third emergency cut-off valve are controlled by the controller, the supply of the furfuryl alcohol and the chlorine is cut off, an emergency cooling system is synchronously started, a refrigerant is conveyed into a jacket and an inner coil pipe of the chlorination kettle body, the emergency emptying valve is opened, materials in the chlorination kettle are transferred into an emergency storage tank, a chlorine detection alarm device arranged on the outer side surface of the chlorination kettle body is used for detecting the chlorine content in the air near the chlorination kettle, when the chlorine detection alarm device detects that the concentration of the chlorine leaked in the air reaches the upper limit, the controller controls the spraying system to perform spraying operation, and the toxic gas in the spraying mode of the air is absorbed.
, a tail gas discharge pipeline is connected to the top end cover of the chlorination reactor body and is connected to a tail gas treatment device, and the toxic gas in the tail gas is completely absorbed by the tail gas treatment device, so that the toxic gas is prevented from being directly discharged to pollute the environment.
, a safety valve is further connected to the top end cover of the chlorination kettle body and is connected with the emergency tail gas treatment device through a pipeline, the safety valve is electrically connected with the controller, when the pressure in the chlorination kettle is too high, the controller opens the safety valve to release the pressure, and the gas is introduced into the emergency tail gas treatment device to be treated.
The invention has the advantages that:
(1) the temperature in the chlorination kettle is detected through the temperature sensor, when the temperature in the chlorination kettle exceeds minus 7 ℃, in order to prevent the temperature from rising in steps, the controller controls the linkage control valve to act, so that the supply amount of furfuryl alcohol is reduced, at the moment, the controller also controls the action of the second linkage control valve in steps in a linkage mode, the supply amount of chlorine is reduced, the feeding proportion of furfuryl alcohol and chlorine is ensured, the temperature in the reaction kettle is prevented from being too high through linkage control, the material reduction proportion of reactants is ensured, and material waste is prevented.
(2) When the temperature rises by steps and reaches the safety production limit, the controller controls the emergency cut-off valve, the second emergency cut-off valve and the third emergency cut-off valve to cut off the supply of furfuryl alcohol and chlorine, synchronously starts the emergency cooling system, conveys the refrigerant to the jacket and the inner coil pipe of the chlorination kettle body, opens the emergency emptying valve, transfers the material in the chlorination kettle to the emergency storage tank, prevents the occurrence of accidental production accidents and ensures the safety production.
(3) The chlorine detection alarm device arranged on the outer side face of the chlorination kettle body is used for detecting the chlorine content in the air near the chlorination kettle, when the chlorine detection alarm device detects that the concentration of the leaked chlorine in the air reaches the upper limit, the alarm is given, the controller controls the spraying system to spray, toxic gas in the air is absorbed through the mode of spraying alkali liquor, and the diffusion of the toxic gas is prevented.
(4) When the pressure in the chlorination kettle is too high, the safety valve is opened by the controller to release the pressure, and the gas is introduced into the emergency tail gas treatment device to be treated, so that accidental production accidents caused by too high pressure are prevented.
Drawings
FIG. 1 is a schematic structural diagram of a reaction device of the present invention, wherein, a chlorination reactor body 1, a furfuryl alcohol metering tank 2, a furfuryl alcohol storage tank 3, an th emergency cut-off valve 4, a th linkage control valve 5, a second emergency cut-off valve 6, a chlorine valve 7, a chlorine buffer bottle 8, a third emergency cut-off valve 9, a second linkage control valve 10, a pressure sensor 11, a temperature sensor 12, an emergency evacuation valve 13, an emergency storage tank 14, an emergency cooling system 15, a refrigerant storage tank 16, a chlorine detection alarm device 17, a tail gas exhaust pipeline 18, a tail gas treatment device 19, a safety valve 20, and an emergency tail gas treatment device 21.
Detailed Description
Referring to the attached drawing 1, a maltol safety production device comprises a chlorination kettle body 1, a feed inlet is formed in an end cover at the top of the chlorination kettle body 1, the feed inlet is connected with a furfuryl alcohol metering tank 2 through a second pipeline, the furfuryl alcohol metering tank is connected with a furfuryl alcohol storage tank 3 through a second pipeline, the device is characterized in that a second pipeline is provided with a emergency cut-off valve 4 and a linkage control valve 5, a second pipeline is provided with a second emergency cut-off valve 6, the bottom of the chlorination kettle body is provided with a chlorine valve 7, the chlorine valve 7 is connected with a chlorine buffer bottle 8 through a third pipeline, the third pipeline is provided with a third emergency cut-off valve 9 and a second linkage control valve 10, the top of the chlorination kettle is provided with a pressure sensor 11, the side wall of the chlorination kettle body 1 is uniformly provided with a plurality of evacuation temperature sensors 12, the bottom of the chlorination kettle body 1 is provided with an emergency evacuation valve 13, the emergency valve is connected with an emergency storage tank 14 through a fourth pipeline, the chlorination kettle safety production device further comprises a chlorination kettle cooling system 15, the cooling system is electrically connected with a cooling system 469, the chlorination kettle body, the emergency drain valve 16, the emergency drain valve is electrically connected with a chlorine storage system, the chlorination kettle body, the chlorine tank is electrically connected with a chlorine storage system 4617, the chlorine storage system, the emergency cooling system is electrically connected with the chlorination kettle body, the chlorine tank, the emergency drain valve assembly, the emergency cooling system is connected with the chlorination kettle body, the emergency cooling system is connected with the emergency cooling system 4617, the chlorination kettle body, the emergency drain system is electrically.
The temperature in the chlorination kettle is detected by a temperature sensor, when the temperature in the chlorination kettle exceeds minus 7 ℃, the controller controls the linkage control valve to act so as to prevent the temperature from further increasing , at the same time, the controller also controls the linkage control valve to act so as to reduce the supply of the furfuryl alcohol and ensure the feeding proportion of the furfuryl alcohol and the chlorine, when the temperature rises , the safety production limit is reached, the emergency cut-off valve, the second emergency cut-off valve and the third emergency cut-off valve are controlled by the controller, the supply of the furfuryl alcohol and the chlorine is cut off, an emergency cooling system is synchronously started, a refrigerant is conveyed into a jacket and an inner coil pipe of the chlorination kettle body, the emergency emptying valve is opened, materials in the chlorination kettle are transferred into an emergency storage tank, a chlorine detection alarm device arranged on the outer side surface of the chlorination kettle body is used for detecting the chlorine content in the air near the chlorination kettle, when the chlorine detection alarm device detects that the concentration of the chlorine leaked in the air reaches the upper limit, the controller controls the spraying system to perform spraying operation, and the toxic gas in the spraying mode of the air is absorbed.
, a tail gas exhaust pipeline 18 is connected to the top end cover of the chlorination reactor body and is connected to a tail gas treatment device 19, and the toxic gas in the tail gas is completely absorbed by the tail gas treatment device, so that the toxic gas is prevented from being directly discharged to pollute the environment.
And , a safety valve 20 is further connected to the top end cover of the chlorination kettle body and is connected with an emergency tail gas treatment device 21 through a pipeline, the safety valve is electrically connected with a controller, and when the pressure in the chlorination kettle is too high, the controller opens the safety valve to release the pressure and introduces the gas into the emergency tail gas treatment device to be treated.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (3)
- The safety production device of the maltol of 1 and types comprises a chlorination kettle body (1), a feed inlet is formed in an end cover at the top of the chlorination kettle body (1), the feed inlet is connected with a furfuryl alcohol metering tank (2) through a second pipeline, the furfuryl alcohol metering tank is connected with a furfuryl alcohol storage tank (3) through a second pipeline, and the safety production device is characterized in that a second emergency cut-off valve (4) and a linkage control valve (5) are arranged on a second pipeline, a second emergency cut-off valve (6) is arranged on the second pipeline, a chlorine valve (7) is arranged at the bottom of the chlorination kettle body, the chlorine valve (7) is connected with a chlorine buffer bottle (8) through a third pipeline, a third emergency cut-off valve (9) and a second linkage control valve (10) are arranged on the third pipeline, a pressure sensor (11) is arranged at the top of the chlorination kettle, a plurality of temperature sensors (12) are uniformly distributed on the side wall of the chlorination kettle body (1), an emergency emptying valve (1) is provided with an emergency emptying valve (9), the emergency emptying valve is connected with a storage tank (14) through a fourth linkage control valve, a chlorine storage system, a chlorine storage tank (15) and a chlorine storage system are electrically connected with a chlorine storage system, the emergency emptying system, the emergency cooling system, the chlorination kettle body (16) and a chlorine storage system, the emergency emptying system is electrically connected with a chlorination kettle body, the chlorination kettle, the emergency cooling system, the emergency emptying system, the emergency spray tank (16) and the emergency emptying system, the emergency emptying system is electrically connected with the chlorination kettle body, the emergency emptying system, the emergency spray system, the emergency emptying system, the emergency discharge system is connected with the emergency discharge.
- 2. The kinds of maltol safety production device according to claim 1, wherein a tail gas exhaust pipe (18) is connected to the top end cover of the chlorination kettle body, and the tail gas exhaust pipe is connected to a tail gas treatment device (19).
- 3. The kinds of maltol safety production devices of claims 1-2, wherein the top end cap of the chlorination reactor body is further connected with a safety valve (20), the safety valve is connected with an emergency tail gas treatment device (21) through a pipeline, the safety valve is electrically connected with a controller, and when the pressure in the chlorination reactor is too high, the controller opens the safety valve to release the pressure, and introduces the gas into the emergency tail gas treatment device to be treated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911244023.6A CN110734421A (en) | 2019-12-06 | 2019-12-06 | Safety production device for maltol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911244023.6A CN110734421A (en) | 2019-12-06 | 2019-12-06 | Safety production device for maltol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110734421A true CN110734421A (en) | 2020-01-31 |
Family
ID=69274491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911244023.6A Pending CN110734421A (en) | 2019-12-06 | 2019-12-06 | Safety production device for maltol |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110734421A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102060821A (en) * | 2010-12-23 | 2011-05-18 | 安徽金禾实业股份有限公司 | Chlorination method and device used in ethyl maltol production |
| CN206382014U (en) * | 2017-01-18 | 2017-08-08 | 寿光新泰精细化工有限公司 | A kind of ketone production chlorination reaction device of 1,2 benzisothiazole 3 |
| CN206492497U (en) * | 2017-02-28 | 2017-09-15 | 山东三义实业股份有限公司 | A kind of chlorination safety production system |
-
2019
- 2019-12-06 CN CN201911244023.6A patent/CN110734421A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102060821A (en) * | 2010-12-23 | 2011-05-18 | 安徽金禾实业股份有限公司 | Chlorination method and device used in ethyl maltol production |
| CN206382014U (en) * | 2017-01-18 | 2017-08-08 | 寿光新泰精细化工有限公司 | A kind of ketone production chlorination reaction device of 1,2 benzisothiazole 3 |
| CN206492497U (en) * | 2017-02-28 | 2017-09-15 | 山东三义实业股份有限公司 | A kind of chlorination safety production system |
Non-Patent Citations (1)
| Title |
|---|
| 唐敏华等: "氯化反应釜自动联锁控制技术", 《江西化工》 * |
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Application publication date: 20200131 |