These technical reformations were made for(shift-de-sulfur) systems from aspects of process and equipment: Newly constructing 2400×24 000 mm de-sulfur tower,reforming regenerator;changing to use new type de-sulfur catalyst and de-sulfur pump.

is used for the gasification scrubber and the de-sulfur tower.

Experimental studies on flow fields,within internally circulating multistage spouted desulfurization towers,have been carried out by using a particle dynamic analyzer(PDA).

This article analyzed the reason of one quality accident in the construction of epoxy FRP for desulfurization tower.

The characteristics of the improved desulfurization tower are as following ∶filling the tower body by beds,filling and removing by time and quantity,replacing beds by slidding,and gas solid phase diffusing evenly.

After that the wastewater is treated by a combined process of ammonia stripping tower,flocculating settling tank,ABR,CASS and zeolite filter,the effluent quality is better than the first class criteria specified in Integrated Wastewater Discharge Standard(GB 8978-1996).

Abnormality in the Operation of Deethanizer in Ethylene Plant and the Optimization Measures;

Based on the simulation results with Aspen Plus the operating condition of deethanizer in ethylene plant was introduced,the parameters of deethanizer in normal operation such as the reflux ratio,operating pressure, sensitive plate temperature and steam volume at the bottom analyzed.