This paper introduces NHD solvent's property of physics and chemicals, industry application character, the new advanced technology about NHD used to purify desulphurization and decarbonization and NHD techhology appllcation range.

The performance and application of NHD solvent was outlined, the problem of NHD solvent in M-sized nitrogenous production was reviewed and analyzed.

Improvement of quartz sand filtration of polluted NHD solution;

Determination of NHD solution with gas chromatography;

The decarbonization of process with NHD solution and operating emphasis.

Cause of NHD de-sulfur solution pollution was analyzed from two aspects of physical & chemical pollutions;multi-influences caused by solution pollution on the system during long-term operation were pointed out,effect treating solution pollution was compared for settling method,filtering method and refining method;suggestions and measures were presented for protecting from solution pollution.

The principle and craft processeses of three kinds of method decarbonization technigue of NHD,hot potassium carbonate,and MDEA were introduced in this paper.

A diffusion coefficient model for polymer-solvent systems based on Simha-Somcynsky equation-of-state;

Ultraviolet-Visible Absorption Spectral Properties of Sudan Ⅲ in Different Solvents;

Effect of solvent on spinnability of electrospun PA6 fiber;