Flow boiling heat transfer mechanism in a three-phase circulating fluidized bed evaporator is analyzed, and then the heat transfer model used for wheat straw black liquor is proposed correspondingly.

A three-layer artificial neural network model with the structure of 3×5×1 has been established by the MATLAB neural network toolbox to simulate the heat transfer coefficient of a three-phase circulating fluidized bed evaporator for wheat straw black liquor.

Handling of wheat straw black liquor appears to be greatly handicapped by the high viscosity of the black liquor.

The heat transfer ability of wheat straw pulping black liquor is poor and this black liquor is easy to form scales during evaporating.

An introduction is given to the operation of alkali recovery from wheat straw pulp black liquor with a daily capacity of 100 tons and washing & bleaching effluent treatment in He′nan Luohe Yin′ge Pulp and Paper Co.

Study on the effecting factors of the graft reaction of lignin from treating paper-pulping black liquor in acidification with acrylamide was accomplished.

Pretreatment of soda straw pulp black-liquor with calcium chloride;