BY GN Nodig 1 August 2016 waste management
BY GN Nodig 24 July 2016 decanter centrifuge, waste management
Firstly THE WASTE
Well like everything you want to manage, you should know it. So basically where is it from, what is it consist of, the charactor densitiy, viscosity, solids content, size distribution.
If you do not know, do not worry, there must be a lot of labs ready to help you.
Then what kind of result you want?
Any standard you need to comply?
Or based on the waste analysis you have, and find what you do not need, or what you need, then decide what to be separated out. And how?
The Waste Management Equipment
There are a lot of equipment based on different material, different purpose, different application. While lots of them have same / similar principle. For drilling related waste and environmental projects, below equipment is the basic ones
Drying shaker, like the other shale shakers, but have higher G force, so can separate higher viscosy parts, or the fluids wanted to stay with solids.
Cuttings dryer, it is working like a centrifuge, vertical, with screens. so the liquids can be able to sepated in the solids looks like dry parts.
Well at the same time, some people may also consider solids control equipment as part of the waste management equipment, so we also count on shaker, mud cleaner, centrifuge etc.
Decanter centrifuge, the centrifuge is almost everywhere, even decanter, most of them seems like same but acturally different, with different specifications.
Dewatering unit, chemicals is helpful on all these progress.
BY GN Nodig 18 July 2016 solids control, waste management
As a professional waste management equipment supplier, GN is now ivesting a TDU, hopefully it will be tested soon.
Material will be fed to a feed hopper mounted on a pugmill. From the pugmill, material is transferred to the feed auger via a transfer auger. The feed auger conveys material into the PTU and maintains a seal/airlock for the system. From outside, that is how the TDU works.
Thermal desorption first regarded as an environmental remedy era in 1985 whilst it turned into particular inside the report of selection (ROD) for the McKin website in Maine. it’s miles regularly known as “low temp” thermal desorption to differentiate it from excessive temperature incineration. An early direct fired thermal desorption mission turned into the remedy of 8000 heaps of toxaphene (a chlorinated pesticide) infected sandy soil at the S&S Flying offerings web page in Marianna Florida in 1990, with later initiatives exceeding one hundred seventy,000 tons on the Cape worry coal tar website online in 1999. a standing report from the united states Environmental safety company (USEPA) shows that thermal desorption has been used at sixty nine Superfund sites through FY2000. further, hundreds of remediation initiatives were completed the usage of thermal desorption at non-Superfund sites.
severa desorber sorts are to be had these days. a number of the greater not unusual kinds are listed below.
indirect Fired Rotary
Direct Fired Rotary
Heated Screw (hot Oil, Molten Salt, electric powered)
maximum indirect fired rotary systems use an inclined rotating steel cylinder to warmth the feed fabric. the warmth transfer mechanism is commonly conduction via the cylinder wall. on this form of machine neither the flame nor the products of combustion can contact the feed solids or the offgas. think about it as a rotating pipe inner a furnace with both ends sticking outside of the furnace. The cylinder for complete scale portable systems is typically five to eight ft in diameter with heated lengths starting from twenty to fifty ft. With a carbon steel shell, the most solids temperature is round 1,000 °F, whilst temperatures of one,800 °F with unique alloy cylinders are attainable. overall residence time on this type of desorber commonly stages from 30 to a hundred and twenty minutes. treatment capacities can range from 2 to 30 tons in line with hour for transportable gadgets.