Bleaching powder or Chlorinated Lime is is a yellowish-white powder easily soluble in water. Bleaching powder production in a profitable small manufacturing business and can be initiated with small startup capital investment. The chlorine content of bleaching powder varies from 35 – 40%.
Bleaching Powder Market Potential
Bleaching powder is mainly used as a bleaching agent and as a disinfectant. The major use is in the paper industry, textile industry, and oil industry. It is widely used in all chemical industry wherever bleaching is required. Sometimes it is also used as a source of chlorine in the preparation of chloroform. The product has good market potential and thus, it is considered as a lucrative investment proposition for entrepreneurs.
Business Registration & License For Bleaching Powder Production
To start bleaching powder production, you will need to obtain different registration and license from different Government Authority. These are as follows:
- Business registration with ROC (Register Of Companies)
- Trade License from local Municipal Authority
- Factory License
- NOC from Pollution Control Board
- Udyog Aadhaar MSME Registration
- BIS Registration, specification is IS 1065:1989
- Vat Registration
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Finance For Bleaching Powder Production
Plant and machinery are the major fixed capital required in this business. For this, you can go for term loan or for the mortgage loan. You can avail cash credit or overdraft facility for working capital purpose. Sometimes many financial institutions make entire project finance with fixed and working capital both. In any case, you will need to arrange collateral security as owner’s contribution towards the project.
Machinery For Bleaching Powder Production
The major equipment required by the unit for manufacturing bleaching powder are as follows:
- Chlorinator with separator, agitator
- Reduction gear box
- Slip ring motor
- Chain & pulley block
- Laboratory equipment
- Lime storage tank
- Water pump
- Vacuum pump with motor
Raw Material For Bleaching Powder Production
The two major raw materials required for the manufacture of bleaching powder are high-grade lime and chlorine. Chlorine is available as a by-product during the electrolysis of brine. When lime is processed with chlorine it has to be free from hydrogen to avoid explosions in the reaction chamber. The lime quality used is utmost importance. Generally, lime which has a CaO content of around 95 % which slakes readily to yield a large volume of slaked lime (over 3 times the volume
of CaO used) is employed. Also, you will need to arrange packaging consumables like container, labels, and outer cartoons.
Bleaching Powder Production Process
Hasen Clever Process is one of the most popular and financially feasible processes of bleaching powder manufacturing. In this process, there are cast iron cylinders operating in series with hydrated lime and chlorine being fed countercurrent to each other. The cylinders are provided with rotating blades and are arranged horizontally one above the other the rotating blades act both as mixed and conveyors of the inside mass. Hydrated lime is charged at one end of the topmost cylinder while chlorine is introduced at the other end of the bottom most cylinder with the rotation of the blades there is an intimate mixing of chlorine and lime with simultaneous movement of slaked lime counter current to chlorine gas. The chlorinated lime is discharged from the bottom cylinder and the un-reacted chlorine is recovered from the top cylinder and recycled along with the fresh chlorine. The bleaching powder discharged is stored in cast iron drums and wood barrels. To increase the storage life, it is mixed with quicklime to yield tropical bleach containing 25% of available chlorine.