(1) Leakage of intake and exhaust valves. There are two reasons for this type of air leakage: First, the valve clearance is too small to close the valve and it is necessary to readjust the valve clearance. The other is that there may be spots on the valve sealing cone surface, such as rust, carbon deposits and other debris, but also make the valve closed lax. The crankshaft can be cranked during the inspection. If there is a “buzzing, squeaking†sound in the air cleaner and the exhaust pipe, the inlet and exhaust valves will leak. The valve needs to be ground. (2) The cylinder head nut is not tightened or the cylinder head gasket is damaged. When turning the crankshaft, if there is a leakage sound at the joint surface between the cylinder head and the machine body, the cylinder head nut may not be tightened, or the cylinder head gasket may be damaged. If it is the former, it should be tightened as required. If the latter is the case, when the cylinder pad is not badly damaged, the asbestos thread can be used to make up for the damage, and in case of serious damage, replace the new pad. (3) excessive wear of the piston ring. When turning the crankshaft, the inside of the body (such as low oil shell) leaks sound, most of them are on the piston ring. Some clean oil can be added into the cylinder. If the compression force is increased after the addition, the piston ring should be replaced. (4) The piston ring opening moves to a straight line (commonly known as the counterpart), or the piston ring is stuck in the ring groove due to coke deposition, and the cylinder cannot be popped up. The phenomenon is that when the crankshaft is turned, there is a sound of air leakage in the crankcase. The piston ring should be removed to remove coke. If the ring moves to a straight line, the positions of the openings should be evenly distributed, but the direction of the piston pin must be avoided. (5) The injector fixing bolt is loose. The cylinder head is leaking at the injector and it should be tightened. Other reasons: If the bearing bush or bushing is bitten to death, the crankshaft cannot be turned; the piston is reversed or the air filter is blocked so that the diesel engine cannot start. Although this type of situation is relatively rare, it is also worthy of attention.
In Ethanol & Alcohol production process, the starches from agricultural products are converted in fermentable sugars with the help of enzymes. Lignocellulosic materials can be used to produce alcohol which is a kind of alternative energy that can replace the limited oil resources. Biomass based ethanol production is mainly composed of 2 steps: cellulose from lignocellulosic biomass is hydrolyzed to produce reduced sugar and reducing sugar is fermented to produce alcohol. Enzymatic hydrolysis of biomass will become the main means of future development because of its low energy consumption, product specificity and conforming to the government's environmental protection policy. Sunson Group supplys Xylanase, Pullulanase, Protease and Amylase for the ethanol & alcohol industry.
Ethanol
is made from various agricultural products including corn, cereal and tapioca
etc. During ethanol production process, the starches in these agricultural
products are converted into fermentable sugars with the help of enzymes. These
fermentable sugars are then fermented into ethanol by yeasts. Specifically, the
ethanol production process includes four stages: starch liquefaction, starch
saccharification, protein and non-starchy polysaccharides hydrolysis, and
fermentation.
Benefits:
Promote the growth and reproduction of yeast
Improve the efficiency of fermentation
Promote the utilization of raw materials
Increase the starch conversion rate
This product should be stored in a cool and dry place in sealed container, avoiding insolation, high temperature and damp. The product has been formulated for optimal stability. Extended storage or adverse conditions such as higher temperature or higher humidity may lead to a higher dosage requirement.
Enzyme preparations are proteins, which may induce sensitization and cause allergic type reactions in sensitized individuals. Prolonged contact may cause minor irritation for skin, eyes or nasal mucosa, so any direct contiguity with human body should be avoided. If irritation or allergic response for skin or eyes develops, consult a doctor.
Alcohol And Ethanol Enzymes
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Sunson Industry Group Co., Ltd , http://www.sunsonchinaenzymes.com