Dichloromethane (DCM) is a multifunctional and powerful chloride solvent known for its high solubility. As a solvent, it is often used for coating removal, metal cleaning and polishing; It can also be used as a processing solvent in the production of drugs, polycarbonate, cellulose ester and photographic film, and as an extraction medium for aerosol propellant and food processing. Other uses include adhesives, cosmetics, plastic processing and foaming. Dichloromethane has many characteristics such as super solubility, low flammability, high cost efficiency, recyclability and rapid evaporation. Therefore, it has long been the preferred solvent for a variety of applications, mainly in polyurethane foam blowing, metal cleaner, adhesive, paint stripper and pharmaceuticals. Methylene Chloride, Dichloromethane,Methylene Chloride Dichloromethane DCM HENAN JINHE INDUSTRY CO.,LTD , https://www.hncarbonblack.com
"The ship module production is placed on the mainland, and the assembled ship modules are assembled into the bridge, the bow, the bow, the hatch cover, etc., and then the above parts are pulled to the sea and assembled into a whole ship on the floating dock." It is the original production mode of the Tsuneishi Group's ship repair base in Japan (the core assembly is in Japan). Due to the adjustment of the export tax rebate policy, the final assembly will also be carried out on the Xiushan land, but it still creates a domestic production record of Panamanian ship type production for two months.
Zhoushan is located in the Yangtze River Delta Economic Zone and has a long and high-quality deep-water coastline. The development of shipbuilding industry is unique. However, the land area and population of Zhoushan are small, and the development of the shipbuilding industry is insufficient in its industrial support, human resources and capital allocation. However, if the development of large-scale shipbuilding industry, with its unique port advantages, it is expected to achieve development advantages in the professional division of labor.
If we have a floating dock, we can carry out large-scale ship assembly at sea with the modular production technology in the case of the Liandao Bridge passing through the mainland. Offshore assembly has technical advantages over land assembly. Large sections like the bridge weigh several thousand tons, which are difficult to assemble on land, and it is relatively easy to assemble on a floating dock using buoyancy at sea. The offshore assembly is maneuverable. If you need to get help from a special operation team or special equipment of a certain factory, you can move the “factory†without moving the operation team, which makes it more convenient for technical exchange. The offshore assembly does not occupy land, and it can be combined with the built deepwater terminal to build a ship to improve port utilization. The production of floating docks can also solve the problem of tight supply of shipbuilding land.
With the development of the shipbuilding industry, ship production standardization will form a trend. At present, the domestic enterprises that produce large-scale ship power equipment are mainly the former military industrial enterprises, which are concentrated in Chongqing and Xi'an. For the production of hull modules, although there are few professional production enterprises on the mainland, they are produced in the mainland by the Liandao Bridge and transported over the island. The cost is relatively low. The assembly company can organize production in the Mainland, and even the process design is completed in the Mainland. Its advantages are self-evident. It is recommended that relevant departments or enterprises conduct feasibility study and demonstration on the construction of “mobile shipyard†in the floating dock of our city.
Dichloromethane is a widely used organic solvent, which is slightly soluble in water, easily soluble in ether and ethanol, and volatile at room temperature. It can cause poisoning if used carelessly. Many commonly used reagents contain dichloromethane, such as various paints, coatings, furniture polish and cleaner, hair styling agent, household air cleaner, deodorant, leather shoe polish and cleaner, etc.
Building a floating shipyard to build a "mobile shipyard"