GAS PROCESSING SYSTEM THAT ELIMINATES UNREACTED AMMONIA FROM THE EXHAUST GASES OF METAL ORGANIC CHEMICAL VAPOUR DEPOSITION SYSTEMS USED IN THE GROWTH OF GROUP 111 NITRIDE BASED MATERIALS. THE UNIT INCORPORATES THREE SEPARATE ZONES THROUGH WHICH THE EXHAUST GASES PASS IN A SERIES. IN ZONE 1, A PYROLYSING FURNACE DECOMPOSES THE ORGANO METALLIC COMPUNDS PRIOR TO THE CATALYST. IN ZONE 2, THE CATALYTIC CONVERSION OF AMMONIA TO HYDROGEN AND NITROGEN TAKES PLACE AND IN ZONE 3 CERAMIC ABSORBER COLUMNS REMOVE ANY RESIDUAL AMMONIA FROM THE GAS STREAM. THE SYSTEM HAS THE CAPACITY TO HANDLE AT A 99.9% CONVERSION RATE, UP TO 30 l/MIN OF PURE NH3 GAS, UP TO 80l/ MIN TOTAL GAS FLOW INCLUDING NH3. THE SYSTEM HAS A SERIES OF SAFETY FEATURES. 1900 MM H X 1400 MM W X 560 MM D.

Nomenclature code:

SECTION XVI MACHINERY AND MECHANICAL APPLIANCES; ELECTRICAL EQUIPMENT; PARTS THEREOF; SOUND RECORDERS AND REPRODUCERS, TELEVISION IMAGE AND SOUND RECORDERS AND REPRODUCERS, AND PARTS AND ACCESSORIES OF SUCH ARTICLES.

8400000000 80 NUCLEAR REACTORS, BOILERS, MACHINERY AND MECHANICAL APPLIANCES; PARTS THEREOF.

8421000000 80 Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases.

8421390000 80 Other.
8421396000 80 By a catalytic process.
8421396090 80 Other.

 

Classification justification:
GIR 1 TERMS OF HEADING INCLUDES, FILTERING OR PURIFYING MACHINERY AND APPARATUS, FOR LIQUIDS OR GASES. GIR 6 TERMS OF ONE-DASH SUB/HDING, FILTERING OR PURIFYING MACHINERY/ APPARATUS FOR GASES. TWO-DASH SUBHDING 8421.39, OTHER THAN INTAKE AIR FIL/TERS FOR ENGINES. CN: 84213960, BY A CATALYTIC PROCESS. TARIC: OTHER THAN FOR USE IN CIVIL AIRCRAFT.
BTI Reference:
GB115023623.
Issuing country:
United Kingdom.
Start date of validity:
.
End date of validity:
2012-01-09.
Language:
English.
Place of issue:
Southend.
Name and adress:
HM Customs & Excise International Trader Operations Alexander House 21 Victoria Avenue Southend-on-sea Essex SS99 1AA.

National keywords:

 

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MACHINERY AND MECHANICAL APPLIANCES; ELECTRICAL EQUIPMENT; PARTS THEREOF; SOUND RECORDERS AND REPRODUCERS, TELEVISION IMAGE AND SOUND