SU1252612A1 - Method of fire decontamination of liquid waste with high concentration of combustible admixtures - Google Patents

Description

 i. IV i fviHii: n icH To gp hieromu

;; () 1: - 1 FM: And ||) 11 pi And 1 Ti I); d i TP H YIN-X LIQUID, | rsdnocheno for ligii1 .ii-. T-.T. LOOKING FOR LIQUID OTXfVlOh

with L:; h Ki I l К Т {I: ОНтр. : 11 Yen wort with - r-: ei r; i and -. .of Hch.ggi iszolzpoppo in xir-rii ii r-pi and MSFTG: imim hkoG {rt i fi, ICH1 if-pc. describe. tshl gtg povi--) e MJx; ok-1; and (testi carried.

 L; hsr yy to fxeMa-i-nMHi 1 predstavlenP1 I ü; --./ in-tHDYa O T.u 1PRG TL OPIA SPO01 0: 4., h 1 eP (ips with η liquid , HbiroKiifi ko) P1, (: Itr t1nen I am burning P; 1; t {...

; -}. (1 I Г1Дг.р: |; п) ICEC; , vi g; mr; 1pi ;, located .Tj / tl -viiinxiirn. a. rpgoo mouth piiiicTBO 2 BT. m: i}: from tlouha, 3 and ga-; - .: h, 1 P1: ntg with ..:; 1G | sch | -li- Ji T .1 g .- | g-11pdp -.- with -n sprayer T; t iM ii: -: | -: g1dol, B kams-re combustion: 1nt I pi. aphid to nnyrpeiuieft surface; I 1I (g: p: p. I l Ly T op slgshye devices; I I I,

, -., -. I I am a student

  O (spirit, l. S-bhodlmye:, i; 4; i; i i n camera I sgo:. J. M:. I lHMf VCTpoiicTBa 6,

/ i 1., 1T1Itel 5, I} .. under the camera

I j. ::, ri;, -. o vc; poiicTHo 2 - 11D - K: G-; : Ch G h p p f} giv ani. : 1 - mg ::, x слкручивает- Д 1., - тч and the stream of feathers ;;; vx.;. Р а ГГЫТ pnin.Il i ЖИД -

h. years p iUiioiTa: ii.noii

: ,, ,, kl l f gro flow

MI i-j: ai; H is randomly pac. - (:; 1 1- (f.;: And; | LS1 1 tone; MI.; I h | .p; slitit evaporation i -,;:, i: 4, it-миmleskoe and i H: is, - , d1is. organic: .- (.. G pp 1,: lilies of mine- / confusion: -1 ml of the stalactor;;, Gy-, y1 1ts part 1D 1,. ,,.:., gsm, - Rings on 41 and IO: G .:,. gs through re ::. 1 ku and :: treat.

. -, L;, O.;: y; 10STAILS

. ; El- DUY ;;,; t-sizes:

. i: / ;: - 2, v, d ,, / D 0.625

.: i ;; multiplier 30%: -; 11ЧД Гь л с с ПОД-.; ::;; -. gh ;; ear T-QUANTITY; / h and m, .1D, sdny schny-;. , mil (, s; - 20 kg / h.

five

0

five

0

five

0

five

0

five

The average Me THatufbifi is the diameter of droplets of liquid liquor d 200-250 microns. The flow rate of natural gas and air is measured with standard washers; the temperature of the exhaust gases at the outlet is measured by a thermocouple in a case, pre-calibrated using a two-way thermocouple; The composition of the waste gases is controlled by gas-gas, HGG-3 alizators and gas-chrome 3101.

The results of the experiments are tabulated.

The main factors determining the process are the intensity of the secondary air twist and the angle of incidence of the flare.

By assigning the secondary air twist to: 1, an even distribution along the reaction zone of the oxidizer (air) and waste water ;. At small values of the twist ing intrinsicity parameter, most of the oxidizer (the secondary air stream is long-range) and wastewater enters the annual zone of the furnace. This leads to a dried out lazy; yes) of the first zone and, as a result, of the fuel consumption of the increased fuel consumption in order to eliminate the re-use; this is the zone of the furnace (experiment No. 1).

At high values of the intensity of the twist, the secondary air jet has a larger angle. This leads to the fact that most of the oxidant enters the reaction (peripheral) zone at the exit of the furnace. In addition, waste water droplets are entrained by swirling air due to centrifugal forces. They are reflected to the periphery, and the greater the intensity of the twist, the closer to the exit from the furnace most of the droplets fall into the periphery} 1st zone. Owing to these circumstances, the exit zone of the furnace is supercooled and the oxidation process of the grigates} is drawn into the gas duct and can take place only at increased fuel consumption (experiment no. 5).

The exploratory studies show that it is advisable to maintain the intensity of the secondary air twist at the level of 0.5-3.

As shown by the experiments (table), the angle of flare opening is also an important factor determining the course of the process, the correct choice of which in

3I

combined with others leads to a postavlepny goal.

Experimental studies show that the angle of flare of a flared waste must be maintained in a narrow interval: 40-70 °

Experimental studies of the fire disposal of liquid wastes with a high concentration of combustible impurities show that the greatest reduction in specific fuel consumption to (20-30%) can be achieved with an even distribution of sprayed liquid waste and secondary air in the reaction (peripheral) zone of the furnace. In this case, the heat that released during the oxidation of organic impurities of that portion of the liquid waste that falls into the head of the furnace reaction zone is useful, i.e. for the evaporation of water from liquid waste following a piston.

Thus, with a uniform distribution of liquid waste, there is no overflow of combustion products, which makes it possible to carry out the process at lower fuel consumption. The counter-current injection of BTopiPiHoro air also does not lead to overcooling of the head part of the regression zone. Moreover, the secondary air is heated by mixing with the gaseous products of neutralization, which has a stabilizing effect on the combustion process of the fuel and the oxidation of impurities. In addition, the secondary air is gradually added to the gaseous products of disposal, not overcooling them.

The distribution of waste liquids and secondary air is carried out by an appropriate aerodynamic structure of the interacting primary and secondary air streams.

Drops emitted from the nebulizer fall into the swirled flow of secondary air, are entrained by it due to the centrifugal effect and pass into the peripheral reaction zone. Moreover, due to the fact that the droplets of dispersed waste IMEUT different diameters and fly out at different angles, the paths of movement of the droplets differ significantly.

526124

Under other raping conditions, small kushnas go over to the reaction well closer to the exit from the furnace, and large ones, on the contrary, take longer to get to the 5th central zone and pass through the reaction zone in the head of the furnace.

The distribution of liquid waste in the reaction zone is most affected by fO factors such as the angle of the liquid jet and the intensity of the twist of the central flow, the secondary air flow.

The twist intensity parameter tS is chosen not less than 0.5 and not more than 3. When the intensity of the twist is less than 0.5, most of the droplets penetrate through the central zone into the head, the kiln zone of the furnace and overload occurs in 20 wastewater of this zone, which leads to overcooling of products burning fuel to temperatures lower than that required for the process and, consequently, to fuel overspeed.

When the intensity of the twist is more than 3, most of the droplets: solid waste due to pentrobug forces turns into the reaction zone at the Q exit of the furnace. In this case, nfperpy3Ka of the exit zone of the furnace occurs, which leads to the removal of waste droplets that have passed fire processing, i.e. in this case, there is also no uniform distribution; f3i3Knx waste by reaction} in the 1st zone.

The angle of the liquid jet also exerts a substantial influence on the distribution of the droplets of liquid waste. At an opening angle of less than 40 °, an overload of the head of the zone with liquid waste is observed, and at an angle of opening of the liquid jet of more than 70 tons of droplets, such a large amount of liquid waste enters the reaction zone from the furnace.

five

The implementation of the proposed method makes it possible to reduce the specific consumption of natural gas by 30–40% (experiment no. 7) and, as a result, to reduce the temperature of the flue gases, which leads to a decrease in pulverization from fire neutralization reactors,

thirty

0.428 I, 05 3

60

26 O 1090 24 O 1080 32.5 0.6 P60

5. 3,5

35 and 1.75 1200 more

6

thirty

20

1.05

45

50

75

16 18.5

28 and more

Complete disposal of waste water in the chamber volume

The upper part of the chamber (1/3) does not participate in the process of disposal of sewage

The upper part of the chamber (1/2) does not participate in the process of neutralization, the process is drawn into the gas duct

Complete disposal of waste water in the chamber volume

960

985

1000

The lower part of the chamber is overcooled, streams of waste water flow down the chamber walls.

§

Fuel

-P

c

mn

ft udKuu waste

Compiled by T. Lepahina

Editor A.Shandor Tehred V.Kadar

Order 4612Л1 Circulation 514 Subscription Le

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Design,

Proofreader, L.Pilipenko

Claims (2)

(57) 1. FIRE WATER TREATMENT METHOD FOR LIQUID WASTE WITH HIGH CONCENTRATION OF FLUID IMPURITIES, including burning in the head zone of a cyclone furnace liquid or gaseous fuel in the primary air stream, supplying secondary air, sawing off waste along the furnace axis and cutting off gaseous products and cutting off the gas stream characterized in that, in order to increase the efficiency of the process, the secondary air is swirled and fed towards the flow of gaseous products of neutralization with the criterion of intensity The twist will be 0.5-3. 2. The method according to claim 1, characterized in that the opening angle _{from the} torch sawing liquid waste S is maintained in the range of 40-70 °.