SU1416440A1 - Method of producing carbon-containing sorbent - Google Patents

Abstract

The invention relates to methods for producing carbon sorbent and allows increasing the sorption capacity of the sorbent for phenol. Coal containing 5-20 wt.% Pieces of size

Description

C9d j: a

The invention relates to the production of activated carbons from brown and black coal, which can be used in hydrometallurgy, in the chemical and petroleum industry for the disposal of wastewater.

The aim of the invention is to increase the sorption capacity of the sorbent for phenol.

Approximately 1. Brown coal with technical characteristics per operating weight: yield of volatile 45-47%, humidity 22-26%, ash content 12-14%, with elemental composition,%:

with - 60.25, S - 0.70, № - 1.2, H - 4.4 and fractional composition, May.%:

Up to 1 3 10-5 m 3-10 - 6 - 8, 10-10 m, 10-10 - 25-25

10- YuO-Yu-m

25 23

18.5

19.0

9.5

-five

served together with air into the middle part of the furnace of the energy boiler, and from the bottom of the mouth of the funnel of the cold furnace, hot air is supplied at 350 C. A vortex forms at the interaction of these two jets. The temperature in the vortex zone of phenol is 1250 ° C. The coke crumb time in the vortex zone is 25 s at a circulation rate of 30 m / s. The volume ratio of the primary blowing air out. burners to the secondary of the nozzles is 80; 20 Next, the coke crust enters the flue gas zone, where the flue gas velocity is 8 M / Cj, the temperature is 800 ° C and the coke crust time in it is 2 s, Full carbon sorbent separated from the water by flotation. The finished sorbent has the following fractional composition, wt.% 5

1 -10

-3 -3

m

, 6 -10 m 2 -10 m

42

55

3

The characteristics of the obtained sorbent at different volumetric ratios of the primary air blowing to the secondary air are presented in the table.

Example 2 "Brown coal fractional composition, wt.%;

Up to 1- 10-% 1 ЧО-З - 3 -10 m 6-10% 6-10-- 10-10-m 10-10- - 25 10-m 25-10- - 100- 10- m

16 24

18.4 16.2 5.4 20

five

0

0

together with the air is supplied to the middle part of the furnace of the energy boiler, and from the bottom, the hot air is supplied to the mouth of the funnel of the cold furnace. When the two jets interact, a vortex is formed. The temperature in the vortex zone of the torch is 1300 ° C. The coke crust time in the vortex zone is 50 s at a circulation rate of 25 s. The ratio of the primary air from the burners to the secondary air from the nozzles supplied from the bottom of the furnace is 80:20. Next, coke crumb. passes the flue gas zone, where the linear temperature — the flue gas velocity is 10 m / s h; the residence time of the coke crumb in it is 5 s. The resulting carbon sorbent is separated from the water by flotation.

Ready sorbent has the following fractional composition, wt.%:

0, - 1 -10-% 44 1 1, 53.1.

2.9

1, 1.6-10- - 2.0 -10%

0

five

Characteristics of the obtained sorbent are presented in the table.

Claims (1)

Invention Formula A method for producing carbon sorbent, which includes the activation of coal in a suspended layer, characterized in that, in order to increase the sorption capacity for phenol, 5-20 wt.% Coal is taken with a piece size (25-100) m, before activation Carbon is circulated at a speed of 25–30 m / s in a vortex air flow at 1250–1300 ° C for 25–30 s and activated by flue gases at 550–800 ° C for 2–5 s.  1416440 Dependence of the characteristics of the resulting coke crumb on the objecny ratio of the primary blow to the secondary