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3342results about "Lump/pulverulent fuel feeder/distribution" patented technology

Low-temperature furnace smoke sucking exhaust gas and hot air drying composite powder feeding bituminous coal and meagre coal universal type powder preparing system

The invention relates to a low-temperature furnace smoke sucking exhaust gas and hot air drying composite powder feeding bituminous coal and meagre coal universal type powder preparing system. A middle bin storage type steel ball coal mill hot air power feeding and meagre coal power preparation system is adopted as a prototype, and part of low-temperature furnace smoke is sucked from an outlet of a suction fan by a furnace smoke fan as an inert medium and part of drying mediums to be mixed with hot air taken from an outlet of an air preheater to enter a coal mill for drying and delivering coal powder; the oxygen content of the powder preparation system is reduced, and the explosion preventing requirement on grinding bituminous coal can be met. In addition, part of exhaust gas at an outlet of a power exhauster is led to an inlet of a heat primary fan by an exhaust gas transfer pipeline to be mixed with hot air to enter a primary bellows for delivering the coal powder; the temperature of a primary air and powder mixture and the oxygen concentration of the system are effectively reduced, and the combustion and explosion preventing requirement of bituminous coal delivery is met. Isolating doors are both installed on a furnace smoke system and an exhaust gas transfer system; by the switch control of the isolating doors, the switching of a typical hot air power feeding meagre coal system and a low-temperature furnace smoke exhaust gas and hot air drying composite powder feeding bituminous coal system is realized, and the invention is not only suitable for the meagre coal, but also suitable for the bituminous coal.
Owner:XIAN THERMAL POWER RES INST CO LTD

Combined coal powder storage and supply system

The invention relates to a combined coal powder storage and supply system which comprises a coal powder storage tank, a weighing coal powder supply silo, a pulse-free coal powder supply device and a support; the coal powder storage tank is vertically arranged at the top of the support, the weighing coal powder supply silo is vertically arranged on the support below the coal powder storage tank, the pulse-free coal powder supply device is arranged below a discharging opening of the weighing coal powder supply silo, and a flexible connector in the center at the top of a sealing head of the weighing coal powder supply silo is connected with a discharging opening of the coal powder storage tank through a rotary valve; and a fluidization component is arranged on the outer wall of a conical hopper of the coal powder storage tank, and a coal powder anti-arching stirring device is arranged on a hopper of the weighing coal powder supply silo. The invention has compact structure, reasonable layout, automatic feeding and stable supply and can solve the problems frequently existing in the ordinary coal storage silo and the supply silo of birdnesting, bridging, rat hole, channeling, wall build-up, breakage, self combustion, and the like; and the invention can be widely used in any situation where the small and medium-sized industrial coal powder boilers are required.
Owner:CHINA COAL RES INST CCRI ENERGY SAVING TECH CO LTD

Oxygen-enriched combustion boiler system and operation method thereof

The invention discloses an oxygen-enriched combustion boiler system and an operation method thereof. The oxygen-enriched combustion boiler system is capable of meeting the emission standard and retarding device corrosion. A denitration device is arranged between a tail part flue of the oxygen-enriched combustion boiler system and a preheater; a heat radiation smoke outlet of the preheater is connected with a heat radiation smoke inlet of a smoke heat exchanger through a dust remover; a heat radiation smoke outlet of the smoke heat exchanger is connected with a desulfurization device and a smoke cooler in sequence and is then returned to a heat absorption smoke inlet of the smoke heat exchanger; a part of the primary air of a combustor is fed into the combustor through a primary air oxygen injector after passing through the preheater and the rest part of the primary air of the combustor is used for pulverizing; the secondary air of the combustor enters the preheater through a secondary air oxygen injector and then is fed into the combustor. The operation method of the oxygen-enriched combustion boiler system emphatically controls the content of water vapor in recycling smoke and the circulation ratio of the recycling smoke and independently adjusts the oxygen injection ratios and amounts of the primary air and the secondary air. The oxygen-enriched combustion boiler system is environment-friendly and easy to implement, and has both oxygen injection safety and economy performances.
Owner:DONGFANG BOILER GROUP OF DONGFANG ELECTRIC CORP

System and method for intelligently controlling electronic weighing type coal feeder

The invention provides a system for intelligently controlling an electronic weighing type coal feeder. The system comprises an ultrasonic wave coal stream monitoring sensor, a weighing carrier roller, a weighing sensor, a speed measuring device, a coal stream detecting signal processor, a control cabinet, a remote monitoring display and a drive motor. The working method comprises the following steps: 1) when the system detects no failure, an indicating lamp of 'normal operation' is lighted; 2) when the system has no failure and coal is on a belt, an indicating lamp of 'material to feed' is lighted in coal feeding; 3) under a condition that the sensor has an overlarge detection difference value or is damaged, when the system is converted into volume type operation, an indicating lamp of 'volume mode' is lighted; 4) the system controls the gross amount of accumulated fed coal of the coal feeder, and the gross amount of coal is sum of weight mode gross amount and volume mode gross weight; and 5) when the system detects the failure, an indicating lamp of 'failure warning' is lighted, and a 'failure search' key is pressed to enter a 'failure search' interface to check failure records.
Owner:SHANGHAI ORIENTAL MARITIME ENG TECH CO LTD

Combustion furnace with full-automatic feed and heath fuel feed device

The invention belongs to the fuel supply of fuel equipment and in particular relates to a combustion furnace with full-automatic feed and a hearth fuel feed device, and a fuel can be combusted from top to bottom in the combustion furnace. The hearth fuel feed device provided by the invention comprises a rectilinear translation bedplate, a feed barrel, a translation device, a feed device and a control device, wherein the translation device comprises a translation motor, a translation variator, a translation position switch, a connecting device and a rectilinear and rotary translation device; the feed device comprises a fuel pallet hoisting mechanism, a feed motor, a feed variator, a feed position switch. a connecting device and a rectilinear and rotary translation feed device; and the control device comprises a translation position switch and a feed position switch control circuit. The combustion furnace provided by the invention comprises a burner part, a furnace body part and the hearth fuel feed device. According to the invention, a moving supply and propulsion feed mode is adopted and continuous and uninterrupted addition of the fuel is realized through circulated supply and continuous propulsion, thereby meeting continuous and long-time requirements for applying fire.
Owner:FUZHOU SUNSHI XIONGDI IND
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