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Treating system for phenol tar and treating method thereof

A processing system and technology for phenol tar, applied in the processing of hydrocarbon oil, chemical instruments and methods, petroleum industry and other directions, can solve the problems of carcinogenicity, production safety and adverse effects on product quality, phenol toxicity, etc., and achieve the effect of improving the recovery rate

Pending Publication Date: 2018-08-24
SHANGHAI YOUHUA PROCESS INTEGRATED TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, phenol tar is a hazardous waste (phenol is toxic and carcinogenic), and it can be directly refined into coking raw material oil, which will adversely affect production safety and product quality

Method used

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  • Treating system for phenol tar and treating method thereof
  • Treating system for phenol tar and treating method thereof
  • Treating system for phenol tar and treating method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] The present embodiment provides a kind of processing system of phenol tar and processing method thereof, such as figure 1 Described, described system comprises phenol cutting tower 1 and coking unit, and coking unit comprises coke tower 5, primary separation tower 6 and secondary separation tower 7 connected successively, and the tower bottom material outlet of phenol cutting tower 1 connects coke tower 5 material inlet;

[0066] Wherein, the discharge pipeline at the top of the phenol cutting tower 1 is provided with a condensing device 2 and a reflux tank 3 which are connected successively, and the outlet material of the reflux tank 3 is divided into two paths, one of which returns to the phenol cutting tower 1, and one of which is sent to a follow-up processing device; The bottom of the cutting tower 1 is provided with a reboiler 4;

[0067] In the phenol cutting tower 1, the upper part is a rectification section with 4-8 theoretical plates, and the lower part is a ...

Embodiment 2

[0077] This embodiment provides a kind of processing system and processing method of phenol tar, the structure of described system refers to the structure in embodiment 1, difference is only: the number of theoretical trays of rectifying section in phenol cutting tower 1 is 6, The number of theoretical plates in the stripping section is 16.

[0078] The processing method of the system refers to the method in Example 1, the difference is only that: the temperature at which phenol tar enters the phenol cutting tower 1 is 210°C; the temperature at the top of the phenol cutting tower 1 is 157°C to 159°C, and the pressure It is -31kPa~-32kPa, the temperature at the bottom of the tower is 232.4°C, and the reflux ratio of phenol at the top of the phenol cutting tower 1 is 0.12.

[0079] In this embodiment, the phenol in the phenol tar after the separation of phenol is reduced to 385 ppm, which reduces the safety risk of the subsequent phenol tar treatment, and improves the recovery r...

Embodiment 3

[0084] This embodiment provides a kind of processing system and processing method of phenol tar, the structure of described system refers to the structure in embodiment 1, difference is only: the number of theoretical trays of rectifying section in phenol cutting tower 1 is 5, The number of theoretical plates in the stripping section is 19.

[0085] The processing method of the described system refers to the method in Example 1, and the only difference is that the temperature at which phenol tar enters the phenol cutting tower 1 is 210°C; the temperature at the top of the phenol cutting tower 1 is 150°C to 152°C, and the pressure It is -26kPa~-28kPa, the temperature at the bottom of the tower is 232.4°C, and the reflux ratio of phenol at the top of the phenol cutting tower 1 is 0.33.

[0086] In this embodiment, the phenol in the phenol tar after the separation of phenol is reduced to 385 ppm, which reduces the safety risk of the subsequent phenol tar treatment, and improves t...

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Abstract

The invention provides a treating system for phenol tar and a treating method thereof. The system comprises a phenol cutting tower and a coking unit, and a tower bottom material outlet of the phenol cutting tower is connected with the coking unit. According to the treating system, on the basis of treating the phenol tar by using an existing coking method, a pretreatment device (namely the phenol cutting tower) is newly added, phenol in the phenol tar is separated, the content of phenol in the tar is lowered to 500 ppm or below, and the safety problem of treating the phenol tar by using the coking method is solved.

Description

technical field [0001] The invention belongs to the field of petrochemical technology, and relates to a phenol tar treatment system and a treatment method thereof, in particular to a phenol tar treatment system and a treatment method using a phenol cutting tower coupled with a coking unit. Background technique [0002] The cumene method is the main method for the production of phenol and acetone, usually producing 100-200 kg of phenol tar for every 1 ton of phenol produced. In addition to phenol (about 10wt%) and acetone, phenol tar mainly includes dimethyl benzyl alcohol (DMTA), acetophenone (AP), cumylphenol (CP) and α-methyl styrene dimer Substances (AMSD) and other by-products. The phenol tar produced by some refineries is directly sold as low-value-added fuel without processing, which not only causes waste of resources, but also seriously affects the surrounding environment. [0003] According to related literature reports, the recovery of phenol tar mainly contains t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G7/00C07C37/74C07C39/04
CPCC10G7/006C07C37/74C10G2300/1003C07C39/04
Inventor 王思珏孙虎良王海
Owner SHANGHAI YOUHUA PROCESS INTEGRATED TECH CO LTD
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