At both Works the Coal Gas and Car- All plant is now in course of erection and firetube induced-draught type designed for buretted Water Gas are treated indepen- Coal Gas production will commence on a working pressure of 120/sq. in. It is dently, the process being briefly as this Works during August. Certain items provided with a waste gas fan with alter- of plant will then be transferred from the native turbine or electric motor drive at
follows:
The hot gas from the plant first passes Jordan Road Works to Ma Tau Kok for the outlet and a superheater at the inlet through water cooled condensers where it re-erection in the C.W.G. section. On will raise the temperature of the steam is cooled to atmospheric temperature. completion of this work gasmaking will Exhausting machinery then pumps the cease from the Jordan Road Works. gas through a 'Livesey' Tar & Ammonia The Carbonizing Plant. Washer, FLO Electro static detarrer
an Ammonia Scrubber, and through Oxide Purifiers for the re- moval of hydrogen sulphide. The purified gas is then metered and passes to the
removal of tar.
holder for distribution.
The New Ma Tau Kok Works.
for
The
The new Works is located at Ma Tau Kok between the waterfront and To Kwa Wan Road and covers an area of approxi- conveyor. mately 130,500 sq. ft. The Company has also for an additional million cuft/day land on the opposite side of To Kwa Wan Road and a new 450.000 eft Holder is in course of erection on this site.
to
torts. Combustion Chambers and flues etc., is built of 5 different types of refrac- tory materials. There are approximately 300 different shapes used in the construc- tion and a total of 250,000 purpose made bricks were shipped from U.K. for this work. The complexity of the construction and the high degree of accuracy require.i (1/16" thickness of joint on retorts) neces- sitated the training of suitable bricklayers for the work.
to 400°F. The rated output of this boiler is 3,800 lbs/hr and it will supply all the steam required for the retorts, producers, boiler-fan turbine and feed water pumps new carbonizing plant, designed leaving a surplus of 2000 lbs/hr for other and installed by West's Gas Improvement
Works uses. Co. Ltd., is of a design which embodies many improved features over the West The retort setting comprising the Re- Point Plant. The plant consists of 16 Vertical Retorts arranged in 4 settings with 4 step grate producers common to all settings. Coal will be elevated overhead storage hoppers by a lip bucket From the storage hoppers the coal will feed through rotary valves into auxiliary supply hoppers from where it will gravitate into the retorts. The retorts are 25' high eliptical in plan and tapered to allow for continuous and regular des- cent of the coal. The crude gas evolved The erection and installation of the The initial gas making capacity of the by the distillation of the coal leaves the entire plant is under the supervision of an Ma Tau Kok station will be 1 million retort through an offtake pipe where it is engineer from West's Gas Improvement ruft/day, the production plant comprising washed with a continuous spray of liquor. Co. Ltd., and a foreman bricklayer from of a Glover-West Vertical Retort Plant The gas then eaters the collecting main this Company supervised the construction with a nominal capacity of 1 million cuft/ and passes to the foulmain where a of the settings. day and one Humphrey & Glasgow C.W.G. governor will regulate the pressure con- Plant of million cuft/day capacity. dition in the retorts to 1/10" w.g. From The C.W.G. Plant.
Provisions have been made for
the governor the gas is drawn away by extension to the Coal Gas Plant amount the exhauster to the ancillary plant, while ing to a further million cuft/day and the Coke is extracted at the base of the also for an additional million cuft/day retort by a large cast iron helical worm, This is slowly rotated by gearing actuated by a reciprocating arm and ratchet gear. The Coal gas ancillary plant comprises The speed of rotation is controlled by an two Vertical Water Tube Condensers com adjustable mask over the ratchet gear and plete with water circulating and cooling also by means of speed regulation on the plant, two Waller exhausters, a Livesey main drive. Washer, Whessoe Electrostatic detarrer, Holmes Multifilm Washer and four 25-foot square C.I. Purifier Boxes.
C.W.G. Plant.
an
The Carburetted Water Gas Plant was ordered from Humphrey & Glasgow Ltd. and is of the latest type with all controls fully automatic.
This gas,
Water Gas" is obtained by passing steam The process is briefly as follows:
through a bed of hot coke. which consists of a mixture of Carbon Monoxide and Hydrogen in approximate- ly equal proportions, is then enriched The residual heat in the Coke is utilised with gaseous hydrocarbons produced by for the formation of water gas within the the cracking of petroleum oil. The decom- retort, steam gas ancillary
being introduced through position of the steam and oil absorbs heat nozzles in the Waller exhausters,
extractor chamber. The from the Coke and the method of replac- electrostatic coke is finally quenched by a water spray ing it is characteristic of the process as detarrer. Each gas stream will be meter- in the chamber and is discharged at two it is supplied by periodically interrupting ed through a Holmes Connersville meter hourly intervals dry and cool.
The carburetted water plant includes
two
Livesey Washer and
an
the admission of steam and oil and blow- before mixing and passing to the holders. The retorts are heated by the Combus- The waste gases during this section of the ing air upwards through the fuel bed. The various items of ancillary plant tion of producer gas in combustion cham-
cycle pass to the atmosphere. have been located with thought to econo- bers built between the retorts. The waste my of ground space, simplicity of connec gases from the Chambers pass to a Waste The Ma Tau Kok boiler plant comprises tions and provisions for future extensions. Heat Boiler which is of the horizontal a Waste Heat Boiler, a Cochrane boiler
25
23
22
9
7
24
K. M. L 102
7
18
14
S E
|1. CABONIZING PLANT
2. COAL GAS CONDENSERS
3. EXHAUSTER HOUSE
4 COAL GAS LIVESEY WASHER
S. COAL GAS ELECTRO DETARRER
6. COAL GAS MUTIFILM WASHER
7. PURIFIERS
8. COAL GAS METER
9. C. W. G. PLANT
SAN
JO, C.W. G. RELIEF HOLDER
II.C.W.G. LIVESEY WASHER
12. C.W.G. ELECTRO DETARRERS
SHA N
R O
D
13. TEST ROOM, TRANSFORMER HOUSE 18.DEEP BORE HOLE
METER HOUSE
14. COAL STORE
IS. BOILER HOUSE
16, C.W. G. SEPARATORS
17. TAR & WATER TANK
19. WATER TANKS
20, PUMP HOUSE
21.METER HOUSE, CLINIC & MESS
ROOM
22 COMPRESSOR HOUSE
23. OFFICES. LABORATORY, WORKSHOPS,
ETC. 24. EXISTING SOGODO CU.FT. HOLDER 25, NEW 450,000 CU. FT. HOLDER 26. ENGINEERS QUARTERS
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