A kind of method for reducing styrene tar viscosity and improving fluidity

A technology for ethylene tar and styrene, applied in the fields of improving fluidity and reducing viscosity of styrene tar, can solve the problems of difficult outsourcing, blocked pipelines, inconvenient transportation, etc., and achieves low economic added value, smooth loading and unloading vehicles, and easy access to Effect

Active Publication Date: 2022-07-15
中韩(武汉)石油化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this kind of heavy oil is not produced in many ethylene plants. If it is purchased from outside, it is relatively viscous at room temperature, which is not easy to transport. At the same time, some viscous polymers will accumulate for a long time, which will block the pipeline, making it difficult to purchase. , technical defects such as blocked pipes

Method used

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  • A kind of method for reducing styrene tar viscosity and improving fluidity

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for reducing the viscosity of styrene tar and improving fluidity, comprising the following steps:

[0031] (1) Pre-filling: Before the styrene tar is transported into the styrene tar tank, the carbon 9 mixture with a temperature of about 55°C is filled with the tank bottom line of the styrene tar tank, and the tank of the styrene tar tank is filled with Put a layer of carbon-9 mixture on the bottom pad, and open the condensate outlet at the bottom of the tank to have liquid;

[0032] (2) Heating: after the completion of step (1), the styrene tar and the dissolving agent ethylene tar are transported into the styrene tar tank together. position), immediately start the electric heater to heat the liquid in the styrene tar tank, and the temperature is controlled at about 58 °C;

[0033] (3) Mixing: in the process of transporting styrene tar into the styrene tar tank, the dissolving agent ethylene tar is also transported into the styrene tar tank, so that the two a...

Embodiment 2

[0037] A method for reducing the viscosity of styrene tar and improving fluidity, the operation method is basically the same as that in Example 1, except that in step (3), the mass ratio of dissolving agent ethylene tar and styrene tar is 3:1; After the implementation of this plan, there was no blockage or agglomeration on the transportation pipeline within 12 months of transportation.

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Abstract

The invention discloses a method for reducing the viscosity of styrene tar and improving the fluidity. Before the styrene tar is transported into a styrene tar tank, naphtha with a temperature of 52°C-58°C is firstly produced during the production of ethylene. The carbon-9 mixture is filled with the tank bottom pipeline of the styrene tar tank, and the bottom of the tank is also padded with a layer of carbon-9 mixture, and the condensate discharge port is opened when there is liquid; The ethylene tar is transported into the styrene tar tank together. When there is a liquid level in the tank, the liquid in the tank is heated, and the temperature is controlled between 55 °C and 60 °C, and the temperature of the liquid in the tank is always between 55 °C and 60 °C. ℃; when the two are fully mixed, the tank bottom pump of the styrene tar tank is turned on, and the circulation operation is carried out through the minimum flow line, and then it is transported by pipeline or tank truck. The invention is a simple and practical method with simple process, low added value, stable process operation and no change in the properties of styrene tar.

Description

technical field [0001] The invention relates to a method for reducing the viscosity of styrene tar and improving the fluidity, in particular to a method for mixing with a substance having good solubility in styrene tar according to a certain proportion, belonging to the technical field of improving the fluidity of styrene tar. Background technique [0002] With the rapid development of my country's national economy, the production capacity of styrene has increased from 1.717 million tons / year in 2005 to 8.9 million tons / year in 2018, and the apparent consumption has increased from 4.28 million tons to 11.3 million tons. Although my country's styrene The output continues to grow, but it is still unable to meet the production demand of downstream devices, and there is a serious shortage of domestic styrene. my country's styrene production process is mainly the catalytic dry gas to ethylbenzene / styrene technology, ethylbenzene dehydrogenation technology, GTC extraction technolog...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10C1/00
CPCC10C1/00C10C1/005
Inventor 周召方李炎生毛文华邵长青
Owner 中韩(武汉)石油化工有限公司
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