Coal gasification grey water dispersing agent and preparation method thereof

Abstract

The invention discloses a coal gasification grey water dispersing agent and a preparation method thereof, the coal gasification grey water dispersing agent comprises 5%-15% of phosphoric acid tricarboxylic acid butane, 5%-15% of polymaleic anhydride, 5%-15% of acrylic acid-acrylamide sulfonate biopolymer and tap water, and the preparation method comprises the steps of material picking, feeding, standing and filtering. According to the present invention, the high-temperature scale inhibition dispersion effect is excellent, the scale inhibition dispersion rate of more than 80% at the high temperature of more than 200 DEG C is still maintained, the scale inhibition dispersion agent has been applied to a variety of gasification furnaces such as coal water slurry gasification, pulverized coal gasification and the like, can be used for a long enough period, can not be stopped for more than 6 months, and can ensure the continuous and stable operation of the device.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a coal gasification ash water dispersant and a preparation method thereof. Background technique [0002] The commonly used scale inhibitors and dispersants in the gray and black water treatment of the former coal gasification unit are generally not ideal, resulting in scaling and blockage of the quenching ring of the gasification chamber, gray water heat exchanger tubes, gray water pumps and other facilities. In severe cases, production must be shut down The cleaning will greatly affect the safe and stable operation of the production equipment, and the production capacity and benefits will be greatly affected. [0003] Patent CN201811131451.3 discloses a non-phosphorus scale inhibitor dispersant for coal gasification gray water, which can prevent scaling of equipment pipes in coal gasification gray water system, control inorganic salt scale, metal oxides and colloidal...

AI Technical Summary

Problems solved by technology

[0002] The commonly used scale inhibitors and dispersants in the gray and black water treatment of the former coal gasification unit are generally not ideal, resulting in scaling and blockage of the quenching ring of the gasification chamber, gray water heat exchanger tubes, gray water pumps and other facilities. In severe cases, production must be shut down The cleaning will greatly affect the safe and stable operation of the production equipment, and the production capacity and benefits will be greatly affected

[0003] Patent CN201811131451.3 discloses a non-phosphorus scale inhibitor dispersant for coal gasification gray water, which can prevent scaling of equipment pipes in coal gasification gray water system, control inorganic salt scale, metal oxides and colloidal precipitation, but its stability is not good. High, poor high temperature resistance

Images