8results about How to "Increase wind temperature" patented technology

The invention relates to the technical field of energy conservation and carbon reduction in metallurgy, and provides a low-carbon sintering flue gas circulation system and purification process for multi-pollutant collaborative treatment, the low-carbon sintering flue gas circulation system and purification process are used for staged treatment of sintering flue gas, and the low-carbon sintering flue gas circulation system comprises a sintering chamber which is provided with a sintering cavity and a flue gas blowing port; the sintering cavity leads to the high-sulfur air duct or the low-sulfur air duct, and the low-sulfur air duct leads to the flue gas blowing port; and the high-sulfur air duct leads to the first flue gas treatment system. By means of the technical scheme, the problem that in the prior art, energy consumption for treating flue gas generated after sintering of sintering ore is high is solved.

This invention discloses a novel, low-load, high-efficiency thermoelectric decoupling heating system. The system is characterized by replacing the high-pressure bypass section with an extraction section. This extraction section extracts steam from the middle of the superheater and uses this steam to heat the secondary air or drive the induced draft fan. Compared to existing technologies, this invention, after heating the secondary air or driving the induced draft fan, returns the steam to the cold section, thus overcoming the problem of limited extraction capacity in conventional systems. It also allows for changes in the coal-to-water ratio within the boiler under low load conditions, increasing the outlet steam temperature of the superheater and reheater under low load conditions, and avoiding the widespread problem of underheating of main steam and hot reheat steam under low load conditions.

The utility model discloses a primary air reheating system for a pulverized coal boiler. The primary air reheating system comprises a boiler, a heat exchanger, a fan and a coal mill. The heat exchanger is connected with the boiler to receive flue gas generated by the boiler, the fan is connected with the heat exchanger to convey primary air to the heat exchanger, the primary air and the flue gas exchange heat in the heat exchanger, the coal mill is connected with the boiler and the heat exchanger, and the primary air after heat exchange is conveyed to the coal mill to be mixed with pulverized coal to be conveyed to the boiler. According to the technical scheme, the heat exchanger is arranged, and the high-temperature flue gas generated by the boiler is guided into the heat exchanger to exchange heat with the primary air, so that heat of the high-temperature flue gas is used for heating the primary air, the air temperature of the primary air is increased, the ignition height and ignition time of a hearth of the boiler are reduced, and the peak shaving capacity of the boiler is improved. The heat of the high-temperature flue gas is used for heating the primary air, and compared with the mode that a heater is arranged for heating the primary air in the prior art, power consumption is reduced, carbon emission is reduced, and the system is more environmentally friendly.

The utility model provides a combustion-supporting air constant-temperature and constant-pressure control device for a glass kiln. The combustion-supporting air constant-temperature and constant-pressure control device comprises a combustion-supporting air pipeline, a natural air pipeline, a temperature measuring device, a pressure measuring device and a DCS control system. The combustion-supporting air pipeline is arranged below the bottom of the glass kiln and comprises at least two hot air collecting pipe bodies, a hot air gathering pipe body and an air supply pipe body which are communicated with each other. The natural air pipeline is communicated with the hot air gathering pipe body, and a fluid control device is installed at an air inlet of the natural air pipeline. And the temperature measuring device is arranged in the air supply pipe body and is adjacent to the air inlet of the glass kiln. And the pressure measuring device is arranged in the air supply pipe body and is adjacent to the air inlet of the glass kiln. The DCS control system is in communication connection with the temperature measuring device, the pressure measuring device and the fluid control device. According to the invention, the temperature of combustion-supporting air is increased, the heat required for heating to the same flue gas temperature is reduced, the continuous and constant air temperature and air pressure are effectively ensured, the flame combustion stability is enhanced, the glass quality is improved, and the heat consumption of the melting furnace is reduced.

The double-chamber lime shaft kiln comprises a calcining chamber and a heat storage chamber, an inner cavity of the calcining chamber is divided into an air preheating zone, a calcining zone, a standing decomposition zone and a calcining chamber cooling zone, and an inner cavity of the heat storage chamber is divided into a limestone preheating zone, a heat storage zone, an extended cooling zone and a heat storage chamber cooling zone. A plurality of spray guns are mounted in the air preheating zone and the limestone preheating zone; nozzles of the spray guns are positioned at the tops of the calcining zone and the heat storage zone; the outer side of the top of the standing decomposition zone is provided with a calcining chamber flue gas annular channel communicated with the standing decomposition zone, the outer side of the top of the extended cooling zone is provided with a heat storage chamber flue gas annular channel communicated with the extended cooling zone, and the calcining chamber flue gas annular channel is communicated with the heat storage chamber flue gas annular channel. By additionally arranging the annular channel to divide the calcining zone and the heat storage zone into two sections, the airflow resistance of the calcining chamber can be reduced, and the temperature of air entering the heat storage zone is increased. Therefore, the fuel consumption is reduced, the limestone calcining cost is reduced, and the lime yield is increased.

The present application belongs to the field of coupling power generation, and provides a system and a control method for coupling a pulverized coal boiler low-load stable combustion and blending combustion. The system comprises two paths of cold air from a boiler primary air fan, one of which is directly transmitted to a cold air main pipe, and the other is transmitted to a hot air main pipe after being preheated by a preheater; a coal mill respectively takes cold air and hot air from the cold air main pipe and the hot air main pipe, mixes them to a set temperature, and then enters the coal mill for drying of the pulverized coal and sending the dried pulverized coal to the furnace of the pulverized coal boiler for combustion; a biomass gasifier respectively takes cold air and hot air from the cold air main pipe and the hot air main pipe, mixes them to a set temperature, and then enters the biomass gasifier; biomass material is gasified in the biomass gasifier to generate carbonized products of biomass charcoal and biogas; the carbonized product of biomass charcoal is transported to the coal mill to be ground together with raw coal, and then is blown to the pulverized coal boiler for combustion in the furnace; and the biogas is directly introduced into the pulverized coal boiler for combustion in the furnace.

The utility model discloses a coal-fired unit primary and secondary air system coupled with compressed air for energy storage, the coal-fired unit comprises a primary flue gas and air system and a secondary flue gas and air system, and the primary flue gas and air system and the secondary flue gas and air system are respectively provided with a primary fan and a secondary fan. A compressed air energy storage power station is coupled in the coal-fired unit, and waste heat generated after compressed air of the compressed air energy storage power station does work is introduced into an outlet bypass of a primary air fan of the coal-fired unit through an air pipe to serve as a bypass air source of primary air. Or a compressed air energy storage power station is coupled in the coal-fired unit, and waste heat generated after the compressed air of the compressed air energy storage power station acts is introduced into an outlet bypass of a secondary fan of the coal-fired unit through an air pipe. The air heater not only replaces the hot air heating function of the air heater, but also can be suitable for a unit with frequent peak regulation as long as a compressed air energy storage power station is put into operation, and air source consumption and coal consumption of the air heater are greatly saved.

This invention discloses a versatile wax powder spraying device, specifically relating to the field of wax powder production. It includes a centrifugal tower with a powder spraying mechanism connected to its top. Air supply pipes are distributed within the tower and connected to the air supply mechanism. An air outlet is located at the top of the tower, and an exhaust port is located at the bottom, connected to a separation mechanism. A discharge port is located at the bottom of the tower. The air supply mechanism connects to a heater and a fan. The fan and powder spraying mechanism are connected via a pneumatic transmission mechanism. This transmission mechanism allows for different types of wax powder to be produced, with varying pressures in the powder spraying mechanism. The fan speed is adjusted accordingly to change the air intake. This method is suitable for producing different types of wax powder while ensuring quality during the production of various wax powders.