Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Desulfurizer composition for removal of sulfides in MTBE

A desulfurizer and composition technology, applied in organic chemistry, ether separation/purification, ether preparation, etc., can solve the problems of high total sulfur in MTBE, high labor intensity, and difficult removal of neutral sulfur, so as to reduce consumption and Production cost, no secondary pollution discharge, guaranteed quality upgrade effect

Inactive Publication Date: 2016-08-10
NINGBO ZHANGFU ENERGY TECH CO LTD
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Source control: use advanced technology to remove mercaptans and neutral sulfur in liquefied gas as much as possible, and control the total sulfur of MTBE from the source. Sulfur is difficult to remove, resulting in high total sulfur in subsequent MTBE;
[0006] C4 desulfurization: Alkali washing and similar molecular sieve absorption combination process are used to carry out fine desulfurization of C4 (ie MTBE raw material) after gas separation, but the cost of fine desulfurization is as high as hundreds of yuan / ton, and there are also complicated molecular sieve regeneration operations and labor intensity big problem
[0007] Deep desulfurization of liquefied gas + MTBE extraction and distillation: Renovate the desulfurization system of liquefied gas, add three-phase mixed regeneration tower, reverse extraction fiber membrane and other equipment, reduce the sulfur content of refined liquefied gas; add an extraction distillation tower to the MTBE unit , the heavy component sulfur in MTBE is removed by distillation and extraction by adding an adsorbent. The investment in this process is relatively large, and when the total sulfur in MTBE is higher, the amount of adsorbent used will be greater, and the operating cost and additive cost actually exceed 150 yuan / ton

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
  • Desulfurizer composition for removal of sulfides in MTBE
  • Desulfurizer composition for removal of sulfides in MTBE

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take 100kg of mineral spirits and methyl tert-butyl ether (MTBE) containing 200μg / g of sulfur for desulfurization. The MTBE sulfur content of the desulfurized product is 8μg / g.

Embodiment 2

[0021] Take 99kg of mineral spirits and 1kg of anti-oxidation scorch inhibitor to prepare a solution to desulfurize methyl tert-butyl ether (MTBE) containing 300μg / g of sulfur, and analyze the MTBE sulfur content of the desulfurized product to be 5μg / g.

Embodiment 3

[0023] Take 82kg of gasoline, 10kg of N-methyldiethanolamine, 5kg of sulfolane, 1kg of anti-oxidant scorch inhibitor, defoamer, and surface active agent, and configure it as a solution. The methyl tert-butyl ether (MTBE) containing 300μg / g of sulfur ) Carry out desulfurization treatment, and analyze the sulfur content of MTBE after desulfurization is 4μg / g.

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

No PUM Login to View More

Abstract

The invention relates to a desulfurizer composition for removal of sulfides in MTBE. The desulfurizer composition is composed of the following components by weight percentage: 60-100% of a main absorbent, and 0-10% of a conditioning agent, wherein the main absorbent is a petroleum product with a distillation range of 140-250DEG C. The desulfurizer composition provided by the invention can remove thioether, disulfide, thiophenic sulfur and other sulfides in MTBE, ensures that the total sulfur of MTBE decreases from hundreds or even thousands of microgram / g to less than microgram / g, the desulfurization effect is obvious, so that as a blending component of gasoline, the desulfurizer composition ensures the quality upgrading of gasoline, and reduces the influence of sulfur-containing tail gas on the environment. In addition, the desulfurizer adding amount can be flexibly adjusted according to the sulfur content of different products so as to reduce the energy consumption and production cost. Also, the sulfur-rich desulfurizer waste liquid can be recycled, causes no secondary pollution emission, and is energy saving and environment-friendly.

Description

Technical field [0001] The invention relates to the technical field of petrochemical desulfurization, and in particular to a desulfurizer composition for removing sulfide in MTBE. Background technique [0002] Methyl tert-butyl ether (MTBE) has become the main blending component for improving the octane number of gasoline and diesel and adding oxygenated compounds due to its high octane number and good blending performance. The blending ratio is generally 8%-15 %. At present, the sulfur content of MTBE products produced from refining catalysis and coking units produced liquefied petroleum gas mixed with carbon four as raw materials varies greatly, usually 100 to 500 μg / g, and some as high as 1000 μg / g. When producing National V vehicle gasoline, even if S-Zorb and other advanced technologies are used to reduce the sulfur content of catalytic gasoline to below 10 μg / g, the sulfur content in MTBE still needs to be reduced to meet the sulfur content index of National V vehicle gaso...

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 Applications(China)
IPC IPC(8): C07C41/44C07C41/34C07C43/04
Inventor 徐振华贺立明何汉武
Owner NINGBO ZHANGFU ENERGY TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products