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Post Requirements
Post Requirements
Product information
Large plate and shell heat exchangers are currently the most advanced, efficient and energy-saving heat exchange equipment in the world. It is especially suitable for heat exchange situations with large processing capacity, large heat load, small pressure difference, small heat transfer temperature difference, and high hazardous media. As a new, efficient and energy-saving heat exchange equipment, plate and shell heat exchanger can be widely used in heating, cooling, condensation, evaporation and other occasions without phase change or phase change medium in industrial devices. In the reforming and aromatics units, the feed heat exchanger plays the role of recovering the reaction discharge heat, increasing the mixed feed temperature, effectively reducing the heating furnace load, and reducing the pressure drop of the reaction system. It is one of the key process equipment of the unit. The performance of the feed heat exchanger directly affects the energy saving and consumption reduction indicators of the entire device.
1. Core components
Since the cross-sectional shape of the flow channel of the heat transfer plate continues to change along the direction of fluid flow, the disturbance of the flow is greatly enhanced, and turbulence can be formed at a very low Reynolds number (Re), thereby increasing the heat transfer performance of the fluid. The corrugated plate is used as the enhanced heat transfer element, and the corrugated plate has the functions of "self-distribution" and "static stirring". In applications where there are two phases of gas and liquid (two-phase flow), the "static stirring" effect overcomes the separation of the gas and liquid phases caused by the "turning" of the medium baffle in the shell-and-tube heat exchanger, and improves heat transfer. efficiency.
(1) The plate bundle is composed of plate tubes, tube sheets, baffles, headers, expansion joints and other components;
(2) Plate material: 300 series stainless steel, Ti, 2205, 254, etc.;
(3) The corrugated plate is formed by continuous molding of the entire plate in batches;
(4) The plates are stacked and loaded into the square shell of the plate bundle (composed of compression plates, side plates and other components), and form a plate bundle with tube sheets, support plates, headers and expansion joints.
2. Product advantages
As a main type of fully welded plate heat exchanger, plate and shell heat exchanger has the following advantages: strong ability to withstand high pressure, high temperature resistance, and reliable sealing performance; using corrugated plates as heat transfer elements, it has high heat transfer efficiency , small pressure drop, compact structure, small footprint, low metal consumption, etc.; suitable for long-term and high-reliability operation of the device, especially to solve the problem of large-scale or expansion of some industrial devices due to large equipment that is difficult to manufacture or limited by space. Inadequate contradiction.
(1) High temperature, high pressure, corrosion resistance;
(2) High heat exchange efficiency, fully welded and no rubber gasket;
(3) Detachable, on-site inspection, repair, and replacement of board bundles;
3.Application fields
Reforming, aromatics unit feed and feed heat exchanger, atmospheric and vacuum unit initial top, constant top oil and gas condenser, sulfur recovery rich and lean liquid heat exchanger, tower bottom reboiler, tower top aftercooler, compressor outlet water cooler , ammonia refrigerator condenser and other condensation, cooling, reboiling, reaction discharge heat recovery occasions.
4. Warranty and after-sales
Arrange instructors with experience in working with similar equipment to be responsible for on-site guidance on installation, start-up and transportation, and technical training. During equipment trial operation, professional technicians are sent to the site to provide technical support and on-site services. After the completion of the project, the buyer will be provided with permanent technical support, free technical consulting services and corresponding technical solutions. Provide solution support and on-site services for technical problems encountered during use and maintenance.
| Set tempreture（℃） | ≤ 900 ℃ |
| Design pressure difference（MPa）（Pressure difference between plate and shell） | ≤ 5.0 MPa |
| Design pressure（MPa） | ≤ 20.0 MPa |
| Plate width（mm） | ≤ 2000 mm |
| Heat exchange area（㎡） | ≤ 13000 ㎡/Uni |
