CHEMICALS & CHEMICAL PRODUCTS
GALLIC ACID
1. INTRODUCTIONGallic Acid is white or off-white crystalline powder. Chemically, gallic acid is known as 3,4,5 trihydroxy benzoic acid. It finds primary use as the basic intermediate for the very important anti-bacterial drug- Trim ethoprim. Gallic acid esters have been in use as anti-oxidants, photographic developer, in tanning, in testing free mineral acids, dihydroxy acetone and alkaloids. The tannins of the gallic acid type are used in the manufacture of ink. The tannins are esters of gallic acid, available in myrobalan fruit pulp, bark, etc. These tannins on saponification yield gallic acid.
Relevant Specification.
Product conforms to available USP specifications and will be provided by NRDC at the time of technology transfer.
2. RAW MATERIALS
Gall nuts, sodium hydroxide, sulphuric acid, ethyl acetate, activated carbon.
3. MANUFACTURING PROCESS
The process to manufacture gallic acid from gall nuts involves decortication of the gall nuts, cooking and hydro-lisation of tannins, extraction of gallic acid with ethyl acetate, separation of gallic acid and the solvent distillation and purification.
The gall nuts are decorticated to separate the seed and flesh material. It is then charged into a reactor where it is by passing steam through the coils provided. The mass is hydrolysed by sodium hydroxide. Small amount of sulphuric acid is also charged into the reactor for adjusting the pH to the requisite level. The hydrilysed tannins are then extracted with ethyl acetate in a counter current continuous extractor. The extracts containing ethyl acetate and gallic acid are subjected to distillation in a jacketed reactor provided with condenser and receiver assembly. The distilled ethyl acetate is used for the subsequent batches. The bottom residue, which is gallic acid, is charged into another vessel and activated carbon is added to it. The material is diluted by about 4 times and heated to 70ºC. It is then filtered hot through a nutch filter. The filtrate is taken into a crystalliser and it is cooled slowly by circulating water to the jacket. The material is then centrifuged to separate gallic acid and the mother liquors. It is then packed in drums for marketing.
Before setting up the unit clearance from State Pollution Control Board would be required.
4. MANPOWER REQUIREMENT : 20
5. PROJECT COST
A. Fixed Capital
|
|
(Rs
lakh)
|
|
Land & building
|
9.70
|
|
Plant & machinery
|
18.00
|
|
Miscellaneous fixed assets
|
0.70
|
|
Preliminary & pre-operative expenses
|
2.25
|
|
Know-how & engineering fee
|
2.80
|
|
Contingencies
|
2.40
|
|
|
35.85
|
|
Particulars
|
(weeks)
|
(Rs
lakh)
|
|
Raw material, consumables & packaging materials
|
4
|
2.49
|
|
Work-in-process
|
1
|
0.62
|
|
Finished goods
|
2
|
2.25
|
|
Receivables
|
4
|
4.50
|
|
Working expenses
|
4
|
0.52
|
|
|
|
10.38
|
Working capital may be financed as:
|
Bank finance
|
Rs
7.78 lakh
|
|
Margin for working capital
|
Rs
2.60 lakh
|
|
Promoter's contribution
|
Rs
12.82 lakh
|
|
Term loan
|
Rs
25.63 lakh
|
|
|
Rs
38.45 lakh
|
6. COST OF PRODUCTION
|
|
Rs
lakh
|
|
Raw material
|
30.64
|
|
Utilities
|
1.05
|
|
Salary & wages
|
4.32
|
|
Overhead expenses
|
4.60
|
|
Interest on term loan
|
4.23
|
|
Interest on working capital
|
1.28
|
|
Depreciation
|
2.65
|
|
|
47.77
|
|
Annual sales realisation
|
Rs
54.00 lakh
|
|
Annual operating expenses
|
Rs
48.77 lakh
|
|
Annual profit (pre-tax)
|
Rs
5.23 lakh
|
|
Return
on capital employed
|
29 %
|
|
Break-even point
|
55
%
|
Market potential :
|
Gallic acid finds usage in a number of industries like
pharmaceuticals, dyestuffs, chemicals, food processing, ink
manufacturing etc.
|
Production capacity :
|
Annual production capacity
|
15 tonnes
|
List of Plant, Machinery & equipment :
|
1
|
Decorticator
|
|
2
|
MS/Lead lined reaction vessel with suitable gearbox
|
|
3
|
Plate and frame type filter press made of wood
|
|
4
|
Continuous liquid/liquid extractor made of SS 316
|
|
5
|
Distillation assembly comprising SS 316 vessel
|
|
6
|
SS 306 reactor, jacketed with 3 HP motor and suitable gear
box
|
|
7
|
SS 316 crystalliser, jacketed, pen type with 3 HP motor
|
|
8
|
SS 304 nutch filter
|
|
9
|
SS 304 centrifuge
|
|
10
|
Coal fired boiler
|
|
11
|
Water ring vacuum pump with motor
|
|
12
|
Cooling tower
|
|
13
|
Laboratory equipment
|
|
14
|
Workshop equipment
|
|
15
|
Fire fighting equipment
|
|
16
|
Insulation
|
|
17
|
Process pumps
|
In modern society, more and more production may adopt the automatic operation or advanced technique. See: www.toption-china.com/reactors-and-instruments/chemical-synthesis-reactor-series. For example, the jacketed reactor is equipped with good applications due to including various characteristics. Moreover, its speed and converting-frequency is adjustable.
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