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861results about "Handling discharged material" patented technology

Sintering ore cooling device and waste heat recovery system thereof

The invention relates to the physical heat recovery field of solid high temperature materials. The system can be applied in the waste heat recovery of extra-large high-temperature particles such as high-temperature sintering ore and the like and the process is as follows: the high-temperature sintering ore from a sintering machine falls into a cold sinter furnace through a feeding system, gradually falls with ore discharge and enters a cooling section to radiate heat. The cooled sintering ore enters a vibrator feeder discharging system through a blanking hopper and a regulating gate. The process can be adopted to cool the sintering ore from about 700-800 DEG C to about 100 DEG C. Cold air provided by an air blower enters the cold sinter furnace through an air inlet and a blast cap, absorbs heat in the cooling section and then enters an annular channel, the high-temperature gas from the annular channel enters a waste heat boiler through a dust remover, the heat is transferred to a working medium and then pumped by the draft fan through the dust remover, and the gas is discharged in a chimney when reaching the dedusting standard. The heat-absorbing working medium (usually water) is converted to superheated steam with a certain parameter in the waste heat boiler to do work in a turbine and drive a generator to generate power. Dead steam after doing work enters a condenser and is sent back to the waste heat boiler through a circulating water pump, thus, a thermal cycle is completed.
Owner:刘柏谦

Improved blast circular cooling machine

The present invention discloses an improved rotary forced-air cooler, which comprises a double layer trolley, a supporting beam structure, a material blocking proof air duct sealing plate arranged at the connecting part of the double layer trolley and an air supplying system, a double layer trolley unit static seal device and an air duct device. The supplying system structure is based on a rectangular beam, a triangle beam is arranged on the rectangular beam, and a plurality of ventilation channels are arranged on the bevel edge steel plates at the both waists; an air duct pipe is arranged on the air vent of the material blocking proof air duct sealing plate, an inclined plate inclining upwards from the air vent at the bottom part of the air duct pipe has a transition to a horizontal plate, a stopping ventilation fence is added to the air duct pipe at the side of the trolley; two rubber sealing parts with extended bottom edges are arranged at the outer sides of the lower parts of inner and outer sealing plates of the double layer trolley unit static seal device, an ash baffle plate which can move up and down is hung at the inner side; an air water sealing wave subduing device adopting a damping plate is arranged on the air duct device. The present invention further improves the sealing performance of the equipment, and reduces energy consumption and pollution.
Owner:ZHONGYE-CHANGTIAN INT ENG CO LTD

Vertical cooling and waste heat recovery furnace for sinters

The invention discloses a vertical cooling and waste heat recovery furnace for sinters, which comprises a feeding hopper and a discharge hopper, wherein the feeding hopper and the discharge hopper are respectively communicated with the top and the bottom of a cooling chamber; first and second air ducts are sequentially sleeved in the cooling chamber; the walls of the first and second air ducts are respectively provided with a plurality of air outlet holes; the top of the first air duct is provided with a cone distributor; the bottom of the second air duct is communicated with a cold air inlet pipe; the cooling chamber is provided with an inner sleeve; a plurality of vent holes are distributed in the wall of the inner sleeve; a hot air collecting cavity is formed between the inner sleeve and a housing of the cooling chamber; the upper part of the hot air collecting cavity is communicated with a hot waste gas exhaust pipe; and the bottom of the hot air collecting cavity is communicated with the discharge hopper. The invention provides a cooling system integrating sinter cooling with closed hot flue gas recovery and waste heat utilization; the vertical cooling and waste heat recovery furnace for the sinters operates under a negative pressure in the cooling process; emission of pollutants can be greatly reduced; the field environment is improved; and the heat recovery rate is improved.
Owner:铜陵市富鑫钢铁有限公司

Waste heat recovery device and waste heat recovery method during condensation of molten calcium carbide

The invention relates to a waste heat recovery device and a waste heat recovery method during condensation of molten calcium carbide. The device comprises a heat collector, a heat pipe exchanger, a duster, a fan and a feed water pump, wherein the heat collector is a closed box arranged on calcium carbide pot transport trolley tracks; sealing doors are arranged at the two ends of the box; a heat insulating material is arranged outside the box; a membrane wall pipe is arranged at the top of the box and on the inner faces of two side walls; a water inlet and a water outlet of the membrane wall pipe are connected with the feed water pump and a water inlet of a heat exchange pipe of the heat pipe exchanger respectively; an air suction port and an air inlet are formed at the lower part of the box; an air outlet is formed at one end of the box; an air inlet of the heat pipe exchanger is connected with an air outlet of the heat collector; an air outlet of the heat pipe exchanger is connected with the duster; the duster is connected with the fan; the fan is connected with an air inlet of the heat collector; the heat pipe exchanger is provided with a steam port; and the steam port supplies gas to a user. The device and the method have the benefits that heat exchange effects of radiation and convection are made full use of, the efficiency is high, the gas is purified, the cooling time is shortened, and the production cost is lowered.
Owner:DALIAN HUARUI HEAVY IND GRP CO LTD

Production process and system of ultralow NOx emission of pellet flue gas

The invention provides a production process and a system of ultralow NOx emission of pellet flue gas. A set of flue gas circulation system is additionally arranged, the flue gas discharged from an airdraft drying section is taken as cooling air to be further conveyed to an air inlet of an annual cooling two-section, meanwhile, a reducing agent is sprayed at the top located at the annular coolingtwo-section, the reducing agent reacts with NOx in the flue gas subjected to the annular cooling two-section, and SNCR denitration is realized; and or the gas discharged from an air outlet of the annular colling two-section is conveyed to a preheating one-section of a chain grate machine after passing through a SNCR treatment system; the high-temperature characteristic of discharging the flue gasfrom the air draft drying section is utilized, meanwhile, the condition of high-temperature sintering ore in the annual colling two-section is utilized, and the part of the flue gas is treated by adopting the SNCR. By the adoption of the technical means, an enterprise atmospheric pollutant emission limit value on the production pressure of pellet roasting equipment requirements can be reduced to acertain extent, and the process and the system have the characteristics of being decreasd in investment, low in operation cost and remarkable in NOx emission reduction effect.
Owner:ZHONGYE-CHANGTIAN INT ENG CO LTD

Material temperature detection and control device for sintering pellet annular cooler

The invention relates to a temperature detection and control device, in particular to a material temperature detection and control device for a sintering pellet annular cooler. The material temperature detection and control device comprises the annular cooler and an annular cooler discharge hopper communicated with the tail of the annular cooler, and is characterized by further comprising more than one infrared thermometer arranged above an annular cooler discharge opening by a heat insulation bracket, wherein the infrared thermometers are connected with a control device, and spray pipes are arranged above the tail of the annular cooler and above the annular cooler discharge hopper respectively. The material temperature detection and control device has the benefits that in a sintering pellet cooling process, a cooled material temperature field at the tail of the annular cooler is indirectly monitored by the infrared thermometers, and after a temperature is within a set range, corresponding movement protection is conducted by contrast judgment of a temperature control device. In addition, a discharge temperature of the annular cooler can be effectively controlled within a safe range, so that damage or ignition of an adhesive tape machine due to the excess temperature is avoided, and equipment damage, economic losses and casualties due to the excess temperature are avoided.
Owner:中冶北方(大连)工程技术有限公司

High-temperature material vertical cooler and waste heat using system

The invention relates to a high-temperature material vertical cooler and a waste heat using system. The high-temperature material vertical cooler comprises a cylindrical machine body supported by a support, the lower portion of the machine body is a cold air input section, the middle portion of the machine body is a cooling section, and the upper portion of the machine body is a material input section. In the cooling section, materials are cooled by means of combination of air draft and air blowing, heat of the high-temperature materials is obtained by cooling air and a cooling pipe by means of heat conduction and conversion, and preheating is conducted on circulating water through a water cooling wall; the high-temperature cooling air is used for overheating steam generated by the vertical cooler and after the temperature of the cooling air is decreased, the cooling air is led to preheat sintering raw materials in a sintering machine; after air heated by a condenser is mixed with the cold air and the air is led to a central funnel cap; steam generated by the vertical cooler is led to a turbine to drive an electric generator to generate power after passing through a steam super-heater; water output by the condenser and a steam pocket is led to a deoxidizing machine for deoxidization and then is led to a water cooling wall so that circulation can be achieved. The high-temperature material vertical cooler is compact in structure, capable of greatly reducing air leakage of a system, guaranteeing the quality of the materials and effectively recycling the waste heat of the high-temperature materials in a stepped mode.
Owner:XI AN JIAOTONG UNIV

Liquid molten slag dry-type centrifugal granulation and afterheat recycle system having molten slag buffer-storage and flow control functions

The invention discloses a liquid molten slag dry-type centrifugal granulation and afterheat recycle system having molten slag buffer-storage and flow control functions. The system comprises a molten slag buffer-storage and flow control unit, a granulation unit, a mobile bed unit and an afterheat utilization unit; the molten slag buffer-storage and flow control unit is arranged at the upper part ofthe granulation unit and is used for buffer-storage of the liquid molten slag and controlling the flow rate and speed of the liquid molten slag falling to the granulation unit; the granulation unit is used for granulating the falling liquid molten slag; the mobile bed unit is arranged at the lower part of the granulation unit and is used for cooling and temporarily storing the granulated molten slag; hot air inside the granulation unit and the mobile bed unit communicates with the afterheat utilization unit; and the afterheat utilization unit comprises a hot air flue, a primary dust collector, an afterheat boiler, a secondary dust collector, an exhaust fan and a chimney which are arranged in sequence. The system disclosed by the invention does not use water resources, is free of environmental pollution, can effectively recycle high-quality afterheat resources contained in the high-temperature liquid molten slag, and can meet the urgent requirements of energy conservation and emissionreduction of the present steel and iron industry.
Owner:XI AN JIAOTONG UNIV
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