Q:Cement production technology

Firing equipment of cement shaft kiln, wet rotary kiln, rotary kiln and ordinary insulating dry kiln, vertical Bohr kiln and preheater kiln (SP) and the current widespread use of the new dry rotary kiln, rotary kiln. Rotary kiln, rotary kiln is a cylinder has a certain slope, slope is 3 ~ 3.5%, with the help of a kiln rotation to promote material stirring in rotary kiln, rotary kiln, the material mixing, contact each other for reaction. Kiln head pulverized coal combustion produces a large amount of heat, heat with the flame radiation, heat convection, brick kiln, kiln conduction to the material. Material depend on kiln shell Angle rotation in the kiln and kiln movement forward..

Q:Use finned tube condenser and evaporator, its fin spacing of how to choose

Finned Tube, also called fins pipe or Finned Tube, English name is "Fin Tube" or "Finned Tube", also sometimes called the "Extended Surface Tube", namely the Extended Surface Tube. As the name implies, finned tube is on the original surface of the pipe (whether outer surface or inner surface) treatment on a lot of fin, the original surface extension, and form a unique heat transfer element.

Q:Now I want to in big drying equipment in stainless steel heating tube or quartz heating tube to see what kind of heat transfer is fast

Heating up fast, of course, quartz heating tube, but the product is fragile, brittle, scrap rate is high

Q:What is heat transfer, heat transfer is wha

Rely on material molecules, atoms, or the movement of electrons (including mobile and vibration), the heat from the process of high temperature to low temperature part of the object, is one of the three basic methods of heat transfer. All objects, regardless of its internal presence of relative motion between the particle, as long as there is a temperature difference, there is heat conduction. Industry, there are many is given priority to with heat conduction heat transfer process, such as rubber products heat vulcanization, and the heat treatment of steel forgings, etc. In the kiln, heat transfer equipment and the design calculation of heat insulation and the temperature of the catalyst particle distribution analysis, the heat transfer law occupies an important position. In high temperature and high pressure equipment (such as ammonia synthesis tower and the waste heat boiler, etc.) of large-scale ethylene plant design, also need heat transfer law to calculate the equipment temperature distribution of each heat transfer within the partition for thermal stress analysis.

Q:Should be prepared to what kind of equipment and materials and tools and equipment?

The type of tube plate heat exchanger and work Plate heat exchanger can be divided, according to the corrugated heat exchanger plate can be divided into according to washer and management unit, wave can be divided into one word, direct wave, spherical wave, in the form of bond type. The combination of various forms, in order to meet the needs of different working conditions, the use of more targeted. The herringbone corrugated plate as the same piece is sealed with adhesive type or management unit may be different, the use of management unit gasket glue may contain chlorine ion, can effectively prevent the corrosion of plates, and more convenient disassembly of the equipment. Another example is the temperature and pressure welding plate heat exchanger is significantly better than the removable plate heat exchanger, can reach 250 ℃, 2. Mpa. The same plate heat exchanger, the diversity of the form, can be applied to a wide range of areas, and can be used in most of the heat exchange process.

Q:Rather than directly from the elevated tank set line?

It would be done oil oxidation, don't do that!

Q:What is the difference between diversion in heat exchanger heat exchanger and diversion?

In diversion tube heat exchanger is inside the shell side of heat exchanger tube set up within the guide tube make the before or after the end of the heat exchanger without diverting tube before use hard to make full use of the heat transfer of heat exchange tube, thereby increasing the effective heat transfer area of heat exchanger. The diversion tube used In the floating head or fixed tube plate heat exchanger, and less common in the u-tube heat exchanger.

Q:Heat exchanger is what to do, have what use?

Heat exchanger is used widely, in the daily life of heating heating radiator, condenser in the turbine unit and the oil cooler on the space rocket, etc., are all heat exchanger. It is widely used in chemical, oil, power and atomic energy industries. Its main function is to ensure that required by the specific process of medium temperature, and is also one of the main equipment of energy efficiency. Heat exchanger is but a single device, such as heater, cooler and steam condenser, etc.; But also a part of the process equipment, such as ammonia synthetic tower's heat exchanger.

Q:Why heater before operation will be into the air in the device?

General way of heater is a heating medium for the required material heating, heat conduction oil heater, for example: air does not do, unstable pump pressure, the air blocking in the pipe, heat conduction oil can't circulation, quantity of heat cannot be passed on to the material.

Q:What methods

There are two kinds of commonly used equipment evaluation method: 1, investment payback method