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Device for producing methyl methacrylate by using waste and old organic glass and using method thereof

A technology of methyl methacrylate and plexiglass, which is applied in the preparation of organic compounds, separation/purification of carboxylic acid esters, organic chemistry, etc., and can solve problems such as environmental pollution

Inactive Publication Date: 2008-01-16
郑金星
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to solve the problem of environmental pollution in the process of cracking and regenerating waste organic glass into methyl methacrylate (MMA). The device of ester (MMA), provides the use method of this device simultaneously

Method used

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  • Device for producing methyl methacrylate by using waste and old organic glass and using method thereof
  • Device for producing methyl methacrylate by using waste and old organic glass and using method thereof
  • Device for producing methyl methacrylate by using waste and old organic glass and using method thereof

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Experimental program
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Effect test

Embodiment 1

[0023] The detailed description of this process cracking device, referring to accompanying drawing 1, accompanying drawing 3:

[0024] 1. In order to avoid the generation of exhaust gas, the entire cracking device is sealed and connected to ensure no leakage. After the installed pyrolysis device is evacuated by a vacuum pump, close the corresponding valve for 24 hours to ensure that the vacuum does not leak, indicating that the device has good airtightness.

[0025] 2. The stainless steel reaction kettle is used as the cracking kettle.

[0026] 3. The pyrolysis process of the cracking kettle adopts direct heating and cracking with an open flame, or chooses an oil bath with a jacketed reactor, and the latter is safer.

[0027] 4. A vacuum device can be used to extract the pyrolysis gas, so as to reduce the pyrolysis temperature, accelerate the pyrolysis speed and reduce energy loss.

[0028] 5. You can choose to install a stirrer on the cracking kettle, so as to stir the wast...

Embodiment 2

[0032] For the invention of the green process distillation device, please refer to attached drawings 2 and 4:

[0033] 1. The installed distillation device is sealed and inspected. After the vacuum pump is pumped, the relevant valves are closed. After 24 hours, ensure that the vacuum does not leak, indicating that the airtightness of the device is intact.

[0034] 2. After distilling the obtained MMA crude product collected by cracking through the distillation tower, collect the required distillate. After condensing through the cooling system, the high-purity MMA flows into the high-quality collection tank, and a condenser is installed on the vent pipe of the high-quality collection tank. The vented gas is condensed into a liquid and flows into the collection tank to prevent the stench of MMA gas from escaping.

[0035] 3. If vacuum distillation is used, in order to limit the emission of waste gas to the maximum extent, after the condensation of the two-stage cold well, most o...

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Abstract

The invention discloses a device to produce methyl methacrylate (MMA) with waste synthetic glass. The cracking unit comprises an airproof cracking reaction cauldron with an oil bath jacket; the airproof cracking reaction cauldron is connected to a crude product gathering tank through a pipeline which passes through a condenser which is connected above the crude product gathering tank; a stirrer is arranged in the airproof cracking reaction cauldron. The distillation unit comprises an airproof distillation reaction cauldron with an oil bath jacket; the airproof distillation reaction cauldron is connected to a finished product gathering tank through a pipeline which passes through a condenser which is connected above the finished product gathering tank. The condensers of the crude product gathering tank and the finished product gathering tank can be replaced with two relief cooling wells. The characteristic of the invention is that all the process of heating, transporting, cooling, gathering, complete cracking and distilling of the raw materials are done in an thoroughly airproof device, effectively controlling the generation and the emission of the gas MMA, meeting the requirements of green technology.

Description

technical field [0001] The invention belongs to the technical field of chemical industry or environmental protection, and relates to a device with environmental protection function applied in the chemical industry and its application. In particular, it is a device for airtight pyrolysis and recycling of waste organic glass and its application method. Background technique [0002] Regeneration of waste plexiglass into methyl methacrylate (MMA) is a resource regeneration process, which is a typical circular economy. However, in the past production process, due to the backward production process, serious secondary pollution was caused Sub-environmental pollution mainly manifests the pollution of the surrounding air, forming the peculiar stench of MMA. For this reason, it is necessary to design a green production process and supporting equipment that will not cause secondary environmental pollution. The process of pyrolysis and regeneration of waste organic glass into methyl m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/54C07C67/475C07C67/48
Inventor 郑金星
Owner 郑金星
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