38results about How to "Realize countercurrent heat exchange" patented technology

The invention discloses a shell and tube sewage heat exchanger. The heat exchanger comprises an external shell and internal heat exchange tubes, wherein the shell is provided with a sewage inlet pipe and a sewage outlet pipe. The heat exchanger is characterized in that: a plurality of parallelly arranged heat exchange tube rows are arranged in the shell; each heat exchange tube row is formed by arranging N heat exchange tubes and is supported and fixed through a supporting and fixing plate connected to the shell; and seal heads are arranged at the two ends of the shell and are connected with the shell through fixed flanges. Compared with the prior art, the invention has the advantages that: sewage can directly enter the heat exchanger without blocking the heat exchanger and can be directly subjected to heat exchange with intermediary water, a secondary refrigerant or a refrigerant without being subjected to any treatment, so that a filtering system is eliminated, higher efficiency andsimplicity are achieved, and manufacturing cost is lower; and the heat exchanger has a detachable structure, can be conveniently maintained, and can meet various engineering requirements.

A solar heat storage and high-temperature gas generation system, comprising a sun-tracking concentrating device (1), a heat storage tank (2) and a heat exchange device (3), the working medium of which is quicksand (5). The quicksand (5) is heated by the sun tracking concentrating device (1), and the heated quicksand (5) is transported to the heat storage tank (2). The quicksand (5) is stably output from the heat storage tank (2), and transfers heat to the high-pressure gas or liquid (6) to be heated in the heat exchange device (3) to generate high-temperature and high-pressure gas. The system has the advantages of good heat storage effect, large heat storage, high heat exchange efficiency and low operating cost.

The invention provides a vertical cement clinker cooling machine, and belongs to a solid material cooler. The vertical cement clinker cooling machine comprises a cylinder body, wherein the cylinder body consists of an upper vertical cylinder and a lower vertical cylinder which are in tight coupling, a material inlet is connected with the upper part of the upper vertical cylinder, a crushing machine is arranged in the upper vertical cylinder, a discharging machine is arranged in the lower vertical cylinder and is driven by a transmission mechanism, a discharging tube is arranged at the bottom of the lower vertical cylinder, a fixed shaft of the transmission mechanism is a hollow air inlet tube, and the air inlet tube is communicated with the interior of the lower vertical cylinder. The vertical cement clinker cooling machine has high heat exchange efficiency and heat utilization efficiency so that materials and gas exchange heat in a countercurrent flow manner, and the hot solid materials are quickly cooled down. Therefore, the characteristics that the energy consumption and the cost are low are achieved.

The invention discloses an efficient shell tube type heat exchanger and a manufacturing method of the heat exchanger. Gaseous refrigerants of an upper layer heat exchange tube surface of the heat exchanger are cooled to liquid, and the liquid is dropped and poured to a lower layer heat exchange tube surface level by level from the upper layer heat exchange tube surface, and then dropped and poured to a dropping and pouring prevention partition plate, it is ensured that a lower layer heat exchange tube cannot be dropped and poured by liquid-state refrigerants of an upper layer heat exchange tube, the contact area of the lower layer heat exchange tube and the gaseous refrigerants is increased, heat resistance is reduced, and the heat exchange effect is improved; the refrigerants are located outside a heat exchange tube to flow, cooling water is located in the heat exchange tube to flow, but, the flowing direction of the cooling water is reverse, backward flowing of two strands of fluid of the refrigerants and the cooling water can be achieved, the surface heat exchange coefficient of the heat exchange tube is improved, the heat exchange effect is improved, and the heat exchange performance of the reverse flow shell type heat exchanger is greatly improved. Compared with a traditional shell tube type heat exchanger, the phenomenon that the liquid-state refrigerants of the surface of the heat exchange tube are dropped and poured to the position between tube layers, and heat exchange is affected is avoided, the reverse flow heat exchange of two kinds of heat exchange fluid of a shell side and a tube side is achieved, the heat exchange coefficient is higher, the heat exchange temperature difference is more uniform, materials are saved, and meanwhile, the energy efficiency ratio is improved.

The invention relates to a double-loop solar heating and heat exchanging combined device. A plurality of double-flow-channel heat transferring units are arranged in parallel. Each double-flow-channel heat transferring unit is internally provided with two flow channels. Every two flow channels are partitioned through thin metal walls. The upper end and the lower end of one flow channel are connected with an upper collecting pipe and a lower collecting pipe of an auxiliary heat source loop, and the upper end and the lower end of the other flow channel are connected with an upper collecting pipe and a lower collecting pipe of a solar loop. Two working modes are adopted for the device, one mode is a heating mode, and the other mode is a heat exchanging mode. The heating mode is further divided into three operating modes, the operating modes can be selected according to the weather situation, heat dissipation cladding is adopted for the heating season, and the heat provided by the solar energy or an auxiliary heat source is released into a room through the heat dissipation cladding. According to the heat exchanging mode, in the non-heating season, the heat dissipation clapping is changed to be heat preservation cladding, and in the double-flow-channel heat transferring units, the heat in the solar loop is transferred to the auxiliary heat source loop. The double-loop solar heating and heat exchanging combined device can be combined with a conventional concentrated heating system, solar energy is fully utilized, the system is simplified, energy efficiency is improved, and integration of the solar energy and a building is achieved.

The invention relates to a system capable of conducting power recovering and cooling by using waste heat of blast furnace slag flushing water, and belongs to the technical field of energy and environment. The system comprises a slag flushing water heat recovery and heat exchange system, an organic Rankine cycle, a steam injection type cooling system and a cooling water circulation system. An internal-thread stainless steel spiral tube shell-and-tube heat exchanger is used as a pre-heater, an external-thread stainless steel tube shell-and-tube heat exchanger is used as a steam generator, and the steam generator is also used as a gas-liquid separator. The system has the advantages of being simple in structure, easy to machine and manufacture, low in manufacturing cost, capable of preventing blockage, capable of realizing countercurrent flow heat exchange, high in heat exchange efficiency, capable of effectively utilizing waste heat of the slag flushing water and the like; the system can be independently used for generating electricity or providing prime power, can also be independently used for cooling and can further provide electric power and chilled water required by a cooling air conditioner at the same time.

This patent discloses a method for preparing high-strength anhydrous gypsum from sulfur-calcium slag. Add sulfur-calcium slag, calcium source, activator, and silicon-aluminum source to a drying and dispersing machine to obtain dry material, and then add the dry material to a countercurrent dryer for dehydration. Enter the fluidized bed to cool to obtain anhydrous gypsum, add surfactant, organic matter, reinforcing agent, and micropowder to the anhydrite and mix evenly to obtain high-strength anhydrous gypsum. The method has low production cost and high efficiency, and realizes high-quality recycling of resources.