A kind of polyester polyol production system
A polyester polyol and production system technology, applied in the direction of climate sustainability, sustainable manufacturing/processing, chemical industry, etc., can solve the problems of reducing the pressure of cooling water pipes in the kettle, wasting water resources, affecting the production capacity of the device, etc., to achieve The effect of saving feeding and heating time, reducing the generation of three wastes, and reducing the failure rate of equipment
Active Publication Date: 2022-01-21
SHANGHAI LIANSHENG CHEM
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The above-mentioned system has the following defects: (1) The existing polyester polyol production process in the factory takes a long time to produce a pot of material, which affects the production capacity of the device and the product quality fluctuates greatly; (2) The discharge pump of the reactor is under high temperature Leakage of the mechanical seal and seizure of the pump card often occur under the environment; (3) The reaction kettle is cooled with cooling water, and the cooling water vaporizes rapidly at a high temperature of 238°C, resulting in a sudden increase in the pressure in the tube, and there is a risk of tube explosion; (4) In order to reduce the The pressure of the cooling water pipe in the reactor, the direct discharge of cooling water leads to waste of water resources, and at the same time increases the treatment burden of the sewage station; (5) The heat energy produced by the hot materials in the reactor has not been reused; (6) The waste water rich in organic matter and Organic waste gas is discharged without utilization, resulting in difficulties in treatment at sewage stations and increased tail gas burden
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0037] A polyester polyol production system, comprising a gas furnace 7 and a reaction kettle 3 connected in sequence, a vacuum dilution kettle 11, a candle filter 13 and a product tank 14, the reaction kettle 3 is provided with a coil pipe, the present embodiment The production system is also equipped with equipment such as a beating tank 1, an incinerator 8, a first filter 2, a second filter 10, and a vacuum pump 12. The specific connections are as follows:
[0038] The beating tank 1 is provided with a raw material inlet, a material outlet and a heating coil, wherein the material outlet is communicated with the feed port of the reaction kettle 3, and a first filter 2 is arranged on the connecting pipeline, and the aperture of the first filter 2 is 20 head. The heating coil is connected to the coil of the reaction kettle 3 in circulation, and a cold oil tank 5, a second circulation pump 6 and a second valve 4 are arranged on the circulation pipeline.
[0039] The coil pipe ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The present invention relates to a kind of polyester polyol production system, and described production system comprises gas furnace and successively connected reaction kettle, diluting kettle, filter and product tank, and coil pipe is arranged in described reaction kettle, and described production system A beating tank is provided, and the beating tank is provided with a raw material inlet, a material outlet and a heating coil, the material outlet communicates with the feed port of the reactor, the heating coil is connected to the coil of the reactor in circulation, and the Heat conduction oil is passed through the heating coil and the coil of the reactor. The production system of the invention has the advantages of large production capacity, energy saving, safety and environmental protection, high product quality stability and low equipment failure rate.
Description
technical field [0001] The invention relates to the technical field of polyester polyol production, in particular to a polyester polyol production system. Background technique [0002] Polyester polyols include conventional polyester polyols, polycaprolactone polyols and polycarbonate diols, which contain ester groups or carbonate groups, and are generally polycondensed from dicarboxylic acids and diols. Response gets. Polyester polyol is one of the main raw materials for producing polyester polyurethane. The polyester polyol needs to be kept at a relatively high temperature during the preparation process. After the reaction, the temperature needs to be lowered and then discharged to prevent the polyester polyol from volatilizing and causing an explosion hazard. [0003] Existing polyester polyol production systems such as figure 1 As shown, the system includes a reaction kettle, an atmospheric pressure diluting kettle, a filled filter barrel and a product tank connected ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/78
CPCC08G63/785Y02P20/10
Inventor 王建平
Owner SHANGHAI LIANSHENG CHEM