MLM-MU-76-67-0003

Cyclone Incinerator Development for July 1976

Issued: September 2 3 , 1976

MONSANTO RESEARCH CORPORATION A Subsidiary of Monsanto Company

Miamisburg, Ohio 45342 operated for

UNITED STATES ENERGY RESEARCH AND DEVELOPMENT ADMINISTRATION

US. Government Contract No. E-33-1-GEN-53

Program

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DISCLAIMER

Portions of this document may be illegible in electronic image products. Images are produced from the best available original document.

DISTRIBUTION

External

J. A. Chacon, ERDA/DAO (2) D. Davis, ERDA/ALO (2) R. A. Wolfe, ERDA/DNFCP (2)

Internal

A. G. Barnett R. K. Blauvelt J. D. Braun W. T. Cave B. D. Craft D. A. Edling R. K. Flitcraft S. S. Freeman K. V. Gilbert E. W. Johnson L. V. Jones D. P. Kelly B. R. Kokenge D. F. Luthy J. R. McClain D. L. Prosser J. E. Todd R. E. Vallbe H. L. Williams Library (15) Technical Publications (3)

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INTRODUCTION

Effort continues to determine the parameters for maximizing the operating efficiency of the off-gas system and the venturi scrubber. Results for the month show a decrease in particulate emissions from the system.

Engineering designs are being finalized for enclosures to permit the introduction of radioactive waste into the incinerator and the handling of the resultant ash. improvements, the cooling system capacity will be increased to handle more heat in the off-gas as a result of continuous operation. to protect the burning chamber enclosure.

Concurrent with these

Additional cooling capacity will also be required

MONTHLY PROGRESS REPORT July 1 through July 30, 1976

In July, a HEPA filter was installed on the final exhaust to demonstrate that premature loading of the filter would not be a problem when incinerating radioactive waste.

PARTICULATE EMISSIONS BELOW EPA STANDARD

During the month, particulate data were collected for twenty- nine runs. The data obtained are summarized in Table I.

Flue-gases were sampled to determine particle size and concentra- tion at the incinerator chamber outlet, deluge tank outlet and the venturi scrubber outlet. Particulate loading in the off-gas stream averaged 15.4 mg/cf at the incinerator outlet, 8.4 mg/cf at the deluge tank outlet and 1.0 mg/cf at the venturi scrubber outlet. The efficiency of the spray tank and venturi scrubber in removing particles generated by the three types of waste being burned are summarized in Table I1 and 111 respectively. The compositionsof the three types are shown in Table IV.

The Environmental Protection Agency standard for stack emission of particulates for industrial incinerators of up to 100 pounds per hour capacity, is 0.2 pound per 100 pounds feed (2 g/Kg feed). The addition of the venturi scrubber has reduced the total particulate emissions to 0.88 grams particulate per kilogram of feed at the venturi scrubber outlet.

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TABLE I SUMMARY OF RESULTS FROM INCINERATOR RUNS

FOR JULY 1936

Run #

314 315 316 317 318 319 320 32 1 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 34 2

-

- Feed w e - LII c LI E11 1 LI 111 I 11 I11 I I1 111 1 I1 111 I 11 111 I I1 I11 I I1 111 I I1 I11 1

lutlet

nefn. -

8.84 18.92 14.09

7.43 11.26 13.01 12.04

8.68 13.73 16.89 23.99 19.13 28.07 23.75 14.97 17.95 11.23 14.19 16.76 10.63 14.44 10.74 14.44 15.98

9.01 12.08 29.01 15.54 20.9

Mter Spray Tank

11.95 14.37 12.36

3.45 6.01

11.32 5.90 3.34

11.47 5.41 9.71 8.84 0.63 8.20 8.84 3.28 5.32

10.33 4.05 6.22

11.38 3.75

12.02 14.15 9.01 8.19

11.17 5.31

10.81

I_

f ter enturi

3.12 5.26 0.19 1.08 0.38 0.25 0.43 0.41 0.88 0.76 0.17 1.04 0.62 1.35 0.73 0.19 0.00 1.64 0.54 0.27 1.64 0.53 1.92 0.48 0.72 0.16 2.07 0.29 1.62

- Time f B u m inutes

13 19 14 20 18 16 22 40 18.5 16 16 13 13 14 1 3 14 16 14 15 15 19 18 19 17 15 17 15 14 15

Inlet A CPI Start

400 405 35 7 285 387 36 7 335 320 340 335 362 395 456 437 461 401 418 413 415 413 334 304 387 304 401 421 425 391 387

-. .--

?low

Avg . 300 313 267 191 334 237 279 304 2 79 24 3 314 264 322 296 282 316 276 304 297 262 241 273 288 249 297 267 304 284 267

'eed W t . .Grama d o Metal

5264 5264 5600 5264 5264 5600 5264 5264 5600 5264 5264 5600 5264 5264 5600 5264 5264 5600 5264 5264 5600 5264 5264 5600 5264 5264 5600 5264 5264

:rams Part. 'er Kilogram feed After

Venturi

2.31 5.94 0.13 0.78 0.43 0.17 0.50 0.95 0.81 0.56 0.16 0.64 0.49 1.06 0.48 0.16 0.00 1.25 0.46 0.20 1.34 0.49 2.00 0.36 0.61 0.14 1.69 0.22 1.23

:omb . late :G/HR

24.3 16.6 24.0 15.8 17.6 21.0 14.4

9.4 18.2 19.7 19.7 25.8 24.3 22.6 25.8 22.6 19.7 24.0 21.0 21.0 17.7 17.6 16.6 19.8 21.1 18.6 22.4 22.6 21.1

- Ash

Grams

337 202 166 307 197 217 450 341 282

633

145 339 296 180 678 361 540 711 107 130

480

434

2 11 174

' 609

:w/o Metal] sh of eed

i.4 1.8 i.0 i .8 3-1 3.9 3.5 5.5 5.0

5.0 2.6 5.4 5.6 3.2 2.9 6.9 9.6 3.5 2.0 2.3

4.6

4.0

4.0 3.1

5.0

-

pray Tz

otal art. emoved

0 24 12 54 47 13 51 61 16 68 60 54 69 65 41 82 53 27 76 42 21 65 17 11 0

32 61 66 48

-

Effic:

emoval f Part

>1u

73 60 65 86 88 63 75 94 65 96 91 80 93

82 100

99 78 91 97 64 92 61 31 87 82 60 87 79

a9

scy x,

hemoval 3f Part

< 1u

0 10 1

19 1 6 1

25 19

0 11 17 38 32 39 15 23

0 0

30 0 0 5 0 6 0 0

62 46 22

'enturi

'otal 'art Lemoved

74 63 98 69 94 98 93 88 92 86 98 88 93 84 92 94

100 84 87 96 86 86 84 97 92 98 81 95 a5

If icien

lemoval )f Part '111

78 45 09 25 88 82 80

100 70 17 100

64 100

53 80

100 63 92 100

54 100

56 100

67 82 79 90 74

-

-

x emoval f Part.

< 111

74 66 99 77 94 99 97 87 96 93 98 93 92 90 93 97

100 88 84 96 92 83 89 96 94 100

83 96 88

0

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TABLE I1 EFFICIENCY OF SPRAY TANK I N REMOVING PARTICULATES

Type I Feed Type I1 Feed Type 111 Feed

All Par t icu la tes >1 Micron <1 Micron (XI 12 .3

2 8 . 4 53.1

6 5 . 3 88 .0

13 .7 1 9 . 1

Type I Feed Type I1 Feed Type I11 Feed

79 .8 75 .7 7 2 . 1

<1 Micron (XI 90.8 93 .2 88 .7

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TABLE IV

Paper Plastics PVC Polyethylene Polypropylene

Rubber Cloth Leather Wood Metal

COMPOSITION OF INCINERATOR FEEDS

32

9 29 8 13

3

2

23 9 2 3

6 1

Type 111'''

48

1 6 -

26 6 - 7 6 .

(1) Weight %

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USE OF A HEPA FILTER TO DETERMINE PARTICULATE LOADING I A HEPA filter was installed in the discharge line beyond the venturi scrubber to ascertain the effectiveness of the scrubber in protecting the filter bank from excessive particulates. Twenty-one runs were made with the filter in the system during July. The measured pressure drop increase was 1.38 inches water gauge at 300 cfm, over this period. Extrapolation of these data indicated that approximately 146 kilograms of feed could be incinerated before a pressure drop of 2 inches water gauge is iscurred or 640 kilograms before a pressure drop of 8 inches is incurred.

These figures are pessimistic because vse of the filter was initiated at the same time that the venturi scrubber was installed. After the installation was completed, some time was needed to establish parameters to minimize the quantity of particulates leaving the scrubber. Continued use of the filter would not reflect the improvement incorporated into the operation of the scrubber. Therefore, the filter was replaced with a new one to obtain more realistic data. that the new filter will have a much longer life than that which had been projected for the original one. with the new filter indicate that the particulate loading has decreased compared to that obtained with the original one.

It is anticipated

Data obtained to date

MODIFICATIONS OF INCINERATOR SYSTEM IN SUPPORT OF FUTURE OPERATION

Design work was started this month to improve the following aspects of the incinerator system:

1. Radioactive feed handling. 2 . Heat dissipation from the burning chamber enclosure. 3 . Increased capacity for off-gas cooling.

These changes will permit the handling of <lo0 nCi/g combustible waste and the resultant ash. They include an enclosure for the burning chamber, control of contamination during the loading of the burning chamber and a contained ash handling facility. The burning chamber enclosure will require cooling due to its proximity to the burning chamber. Liquid cooling furnished by the incinera- tor cooling system was chosen as the most effective method because additional liquid cooling capacity will be necessary to maintain the off-gas temperature at current levels during planned continuous feed operations. Therefore, the two changes can be made as one modification of the present cooling system.

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PLANNED MILESTONES FOR FY-1976A

Efforts in FY-1976A will primarily consist of preparations for incinerating contaminated waste. (See Milestone Chart attache

Milestone A will provide information and, possibly, modifications to the existing incinerator required to enable burning in 30, 55 or 83-gallon drums. Presently, combustibles are stored in all three sizes of drums at various ERDA sites; therefore, it would be advantageous to burn in-situ from any of these drums.

Milestone B will result in written procedures for safely handling drums of contaminated trash before and during inciner- ation and for handling the ash following incineration.

Milestone C will result in enclosures around the burning and ash handling areas to contain radioactive particulates.

CYCLONE INCINERATOR PROJECT

MILESTONE CHART

FY-1976A

AUG. JULY - A . TEST DIFFERENT DRUM S I Z E S

FOR BURNING CHAMBERS

B. OPERATING PROCEDURES

C . MODIFICATIONS TO ENCLOSURES

SEPT.

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