Unlock instant, AI-driven research and patent intelligence for your innovation.

Oil-water separation method for ethylbenzene dehydrogenation reaction condensate

A technology for ethylbenzene dehydrogenation and oil-water separation, which is used in the purification/separation of hydrocarbons, the separation of immiscible liquids, chemical instruments and methods, etc. problem, to achieve the effect of uniform flow distribution

Active Publication Date: 2013-08-28
CHINA PETROLEUM & CHEM CORP +1
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is that in the prior art, after the oil-water separation of the ethylbenzene dehydrogenation reaction condensate, the water phase contains a lot of oil, which causes the follow-up equipment to be easily blocked, and at the same time, the investment of the oil-water separation equipment is large. Oil-water separation and separation method of two-stage ethylbenzene dehydrogenation reaction condensate of internal component oil-water main separator I and oil-water post-separator II

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Oil-water separation method for ethylbenzene dehydrogenation reaction condensate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A 100,000-ton / year styrene plant (annual operating hours 8,000 hours), its ethylbenzene dehydrogenation reaction condensate oil-water separation adopts figure 1Technology. The main oil-water separator is a horizontal container with a volume of 30 cubic meters, a length of 8 meters, and a diameter of 2.4 meters. The feed condensate flow rate is 45 cubic meters, wherein water accounts for 70% (by weight), and hydrocarbons account for 30% (by weight). The diameter of the feed pipe is 250 mm, the opening diameter of the pre-distributor is 40 mm, and the number of holes is 100. The inner member of the steady flow adopts a vertically arranged corrugated plate with a thickness of 500 mm. The inner member of the demulsification adopts a metal plate with a small hole of 25 mm. , the number of holes is 260, the internal member of the oil phase accumulation adopts horizontally placed corrugated plates, the thickness is 2 meters, the diameter of the oil phase outlet is 150 mm, the ...

Embodiment 2

[0020] A 100,000-ton / year styrene plant (annual operating hours 8,000 hours), its ethylbenzene dehydrogenation reaction condensate oil-water separation adopts figure 1 Technology. The feed amount, composition and equipment structure of the oil-water main separator and the oil-water post-separator are the same as those in Example 1, except that the flow-stabilizing internal components of the oil-water main separator adopt a packing structure.

[0021] The separation part equipment investment is 1.45 million yuan, covers an area of ​​29 square meters, the liquid residence time of the oil-water main separator is 40 minutes, and the liquid residence time of the oil-water rear separator is 30 minutes. After analysis, the oil phase of the oil-water main separator has a water content of 0.075% (weight ), the water phase of the oil-water main separator contains 0.6% oil; the process water at the outlet of the water phase of the oil-water post separator contains 0.3% oil.

Embodiment 3

[0023] A 100,000-ton / year styrene plant (annual operating hours 8,000 hours), its ethylbenzene dehydrogenation reaction condensate oil-water separation adopts figure 1 Technology. The feed amount, composition and equipment structure of the oil-water main separator and the oil-water post-separator are the same as those in Example 1, except that the internal components of the oil-water main separator and the oil-water post-separator are all made of wire mesh.

[0024] The investment of this separation part equipment is 1.35 million yuan, covers an area of ​​29 square meters, the liquid residence time of the oil-water main separator is 40 minutes, and the liquid residence time of the oil-water rear separator is 30 minutes. After analysis, the water content in the oil phase of the oil-water main separator is 0.08% (weight ), the water phase of the oil-water main separator contains 0.7% oil; the oil-water post-separator water phase outlet process water contains 0.4% oil.

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

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to an oil-water separation method for an ethylbenzene dehydrogenation reaction condensate, which mainly solves the problems that in the prior art, the water phase has high oil content after oil-water separation of the ethylbenzene dehydrogenation reaction condensate, thus leading to sequent equipment to be easily blocked, and simultaneously oil-water separation equipment haslarge investment. The oil-water separation method provided by the invention well solves the problems by using a two-stage separation technical scheme, which is performed by firstly introducing the ethylbenzene dehydrogenation reaction product condensate into an oil-water main separator I, passing through a pre-separation internal component, a steady flow internal component, a demulsification internal component and an oil-phase accumulation internal component in the main oil-water separator in a proper order to realize oil-water separation, discharging the oil phase through an oil phase outletpipe after overflowing from a baffle, discharging the water phase to an oil-water after-separator II through a water phase outlet pipe, and passing through at least a pre-separation internal component and an oil-phase accumulation internal component in the oil-water after-separator in a proper order to realize further separation of the oil phase and water phase, and can be used for the industrialproduction of the oil-water separation of the ethylbenzene dehydrogenation reaction condensate.

Description

technical field [0001] The invention relates to an oil-water separation method for ethylbenzene dehydrogenation reaction condensate. Background technique [0002] Styrene is one of the most important basic organic chemical raw materials, used to manufacture polystyrene PS and EPS, ABS and SAN and other copolymer resins, styrene / butadiene copolymer latex SB, styrene-butadiene rubber and latex SBR, unsaturated Polyester and others such as styrene / methyl methacrylate latex, methyl methacrylate / butadiene / styrene copolymer MBS, ion exchange resins and drugs, etc. [0003] More than 85% of styrene production in industry is produced by ethylbenzene dehydrogenation method, the Chinese translation of "Benzene and Its Industrial Derivatives" (Benzene And Its Industrial Derivatives) edited by E.G.Hancock [English] (Chemical Industrial Press, in November, 1982, Beijing) introduced the method for ethylbenzene dehydrogenation to produce styrene, according to this method, ethylbenzene deh...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01D17/02C07C5/327C07C15/46C07C7/00
Inventor 刘文杰张忠群张洪宇
Owner CHINA PETROLEUM & CHEM CORP