Chemical machinery and equipment is the general name of the machinery and equipment used in the chemical industry production. Chemical production to the processing of raw materials into a certain specifications of the finished product, often need to after pre-processing of raw materials processing, chemical reaction and separation of the reaction products and refining a series of chemical process to achieve the process of mechanical, are often classified as chemical machinery.
Main classification:
Chemical machinery. Refers to the main parts for mechanical movement, such as all kinds of filters, crushing machine, centrifugal separator, rotary kiln, mixer, rotary dryer and fluid transportation machinery.
Chemical equipment. Refers to the main components are stationary or only with little movement of the machinery, such as various vessels (tanks, tank, vessel, etc.), ordinary kiln, tower, reactor, change heat exchanger, ordinary dryer, evaporator, reactor, electrolysis, crystallization equipment, mass transfer equipment, adsorption equipment, fluidization equipment, ordinary separation equipment and ion exchange equipment. Chemical machinery division is not strict, some fluid conveying machinery (such as pumps, blowers and compressors, etc.) in the chemical sector is often referred to as the chemical machinery, but they are also all kinds of industrial production of general machinery. Modern chemical machinery design and manufacturing, in addition to rely on the development of mechanical engineering and materials engineering, but also with the development of chemical technology and chemical engineering is closely related. Chemical machinery mainly study the corrosion resistance of machinery, etc., as well as the scope of electrochemical.
Chemical machinery is essential in the chemical plant production equipment, chemical machinery is different from other machinery is a significant feature of:
(1) there are many kinds of energy forms, and the transformation process is more complex, the most common form of energy is thermal energy, mechanical energy, chemical energy, electromagnetic energy and so on;
(2) the refrigerant properties varied, as composition, composition and phase changing etc.;
(3) the operating conditions are very broad, and the operating parameters are special, such as high and low pressure, low speed, high and low temperature, high and low viscosity, etc.;
(4) the characteristics of the requirements of different chemical properties. Thus constitute the chemical machinery and equipment special structure of the ever-changing. Generally can be divided into two types of chemical equipment and chemical machinery. Chemical equipment, including a variety of containers such as heat exchangers, towers, reactors, etc.. The main components are generally static. Or only a little exercise. Chemical machinery including centrifuges, filter, crusher, rotary kiln and rotary dryer. The main components are regular motion, such as the special pump, compressor, transport, etc.. Has the characteristics of chemical machinery.