Issue 20/2015 - Advanced treatment of low-temperature isomerized raw materials

The development and application project of advanced treatment technology for low-temperature isomerized raw materials has recently passed the technical appraisal
organized by the Ministry of Science and Technology of Sinopec in Beijing.
Experts determined that the technology has the characteristics of
simple process flow, low construction investment, low operating costs, and low comprehensive energy consumption in operation.
The project was jointly developed by Sinopec Fushun Petrochemical Research Institute, Luoyang Engineering Co.
, Ltd.
and Tahe Branch, and has been authorized 3 national invention patents
.

In view of the fact that the inorganic sulfur and nitrogen content in the raw materials of the 300,000-ton isomerization unit of Tahe Branch cannot meet the requirements of the plant, Fushun Petrochemical Research Institute has developed advanced treatment technology
for low-temperature isomerized raw materials.
This technology optimizes and integrates the process of reaction water injection, product fractionation system, electrodehydration-coalescence dehydration, chemical adsorption desulfurization, etc.
, and develops chemisorption deamination technology, which can make the inorganic sulfur and nitrogen content of raw materials of low-temperature isomerization device meet the index requirements
.
Among them, the FDNH3 adsorption ammonia deammonia agent developed has high ammonia volume and good regeneration performance.
The preferred HTZM-1 desulfurizer has the characteristics of
deep desulfurization and high sulfur capacity.

After the cooperation and development of low-temperature isomerization raw material advanced treatment technology, it has been industrially applied
in the raw material pretreatment unit of the 300,000-ton isomerization plant of Tahe Refining and Chemical Branch in July 2014.
The results of industrial operation in the past 10 months show that this technology can meet the stringent requirements for sulfur and nitrogen content in the feed of isomerization equipment, and can achieve long-term stable operation
of production plants.
(Letter)