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MTBE product desulfurization device

A desulfurization device and product technology, applied in distillation separation, organic chemistry, fractionation, etc., can solve the problems of small investment, affecting MTBE yield, MTBE loss, etc., achieve high energy utilization rate, reduce desulfurization cost, and improve desulfurization rate Effect

Pending Publication Date: 2021-12-14
ZHEJIANG MEIFU PETROCHEMICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method has low investment, no pollution, and is easy to carry out technological transformation. It is suitable for MTBE with high content of high-boiling sulfides, and because low-boiling sulfides have been evaporated from the top of the tower with mixed carbon four in the MTBE production process. out, so the applicability of the method is strong, but the method will cause MTBE loss and affect the yield of MTBE

Method used

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  • MTBE product desulfurization device
  • MTBE product desulfurization device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 A kind of MTBE product desulfurization device shown includes distillation tower 1, stripping tower 2, auxiliary tower 3 and connecting pipeline network, and connecting pipeline network includes high-sulfur MTBE feed pipeline 4, low-sulfur MTBE discharge pipeline 5. The first circulation pipeline 6 , the first discharge pipeline 7 , the first discharge branch 8 , the second discharge pipeline 9 and the third discharge pipeline 10 . The high-sulfur MTBE feed pipeline 4 is connected to the middle of the distillation tower 1, the low-sulfur MTBE discharge pipeline 5 is connected to the top of the distillation tower 1, and the first circulation pipeline 6 is connected to the upper part of the distillation tower 1, the top of the stripping tower 2 and the top of the auxiliary tower 3 , the first discharge pipeline 7 is connected to the bottom of the distillation tower 1 and the middle part of the stripper 2, the first discharge branch 8 is connected to the fi...

Embodiment 2

[0042] Such as figure 2A kind of MTBE product desulfurization device shown includes distillation tower 1, stripping tower 2, auxiliary tower 3 and connecting pipeline network, and connecting pipeline network includes high-sulfur MTBE feed pipeline 4, low-sulfur MTBE discharge pipeline 5. The first circulation pipeline 6 , the first discharge pipeline 7 , the first discharge branch 8 , the second discharge pipeline 9 and the third discharge pipeline 10 . The high-sulfur MTBE feed pipeline 4 is connected to the middle of the distillation tower 1, the low-sulfur MTBE discharge pipeline 5 is connected to the top of the distillation tower 1, and the first circulation pipeline 6 is connected to the upper part of the distillation tower 1, the top of the stripping tower 2 and the top of the auxiliary tower 3 , the low-sulfur MTBE discharge pipeline 5 is provided with a low-sulfur MTBE return branch 22 , and the low-sulfur MTBE return branch 22 connects the low-sulfur MTBE discharge p...

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Abstract

The invention provides an MTBE product desulfurization device which is high in desulfurization efficiency and high in yield. The MTBE product desulfurization device comprises a distillation tower, a stripping tower, an auxiliary tower and a connecting pipeline network. The connecting pipeline network comprises a high-sulfur MTBE feeding pipeline connected with the middle part of the distillation tower; a low-sulfur MTBE discharging pipeline connected with the top of the distillation tower; a first circulating pipeline connected with the upper part of the distillation tower, the top of the stripping tower and the top of the auxiliary tower; a first discharging pipeline connected with the bottom of the distillation tower and the middle of the stripping tower; a first discharging branch connected with the first discharging pipeline and the middle part of the auxiliary tower; a second discharging pipeline connected with the bottom of the stripping tower and the middle of the auxiliary tower; and a third discharging pipeline connected with the bottom of the auxiliary tower. Through the combination of the distillation tower, the stripping tower and the auxiliary tower, the MTBE desulfurization rate is remarkably improved, an almost lossless MTBE recovery rate is achieved, and the desulfurization cost of an MTBE product is reduced.

Description

technical field [0001] The invention relates to a desulfurization device, in particular to a desulfurization device for MTBE products. Background technique [0002] Methyl tert-butyl ether (MTBE) is an important additive component of motor gasoline in my country. In motor gasoline, MTBE can be added in a blending ratio of 8% to 15%, which can increase the octane number of gasoline. With the increasingly stringent national environmental protection requirements and the deployment of the national carbon neutral strategy, the quality standards for vehicle gasoline are becoming more and more stringent. In the current National V standard, the sulfur content of vehicle gasoline is required to be less than 10ppm. [0003] The production of MTBE is made by the catalytic reaction of mixed C4 feedstock and methanol in the refinery. Among them, the influence of methanol on the sulfur content of MTBE is small, and the main influence on the sulfur content of MTBE is the accumulation of s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D3/14C07C41/42C07C41/34C07C43/04
CPCB01D3/146C07C41/42C07C41/34C07C43/046
Inventor 刘丰敏程键雄胡敏达
Owner ZHEJIANG MEIFU PETROCHEMICAL CO LTD
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