35results about How to "Reduce incomplete combustion heat loss" patented technology

A smokeless combustion device with fire stack in furnace consists of destructive distillation gasification combustion chamber, the second combustion chamber, top fire grate, bottom fire grate, fire stack in furnace, firepot, heated surface and fender. The extensive fuel materials such as raw coal, bulk coal, section coal, wood, straw and agricultural wastes can be used as fuel material of said device.

The invention relates to a regenerative heating furnace and a flue gas circulating combustion method thereof. On the basis of a conventional regenerative heating furnace, two regenerative heating furnaces are respectively installed between each heating section. Flue gas auxiliary burner. The entrance direction of the flue gas auxiliary burner is at a certain angle to the furnace width direction, and is biased towards the adjacent gas or combustion air burner; the outlet of the regenerator of the auxiliary burner is connected to the flue gas pipeline. During the operation of the heating furnace, part of the flue gas in the flue is drawn back, and sent to the furnace for secondary combustion through the auxiliary flue gas burner, and its flow direction is opposite to that of the combustion-supporting air and gas. The invention achieves the purpose of improving the energy utilization rate and reducing the oxidation burning loss rate through the recycling of flue gas.

The invention relates to a fuel additive, in particular to a coke-removing and soot-cleaning combustion improver for a boiler, suitable for various boilers, kilns, and other fuel furnaces using coal, oil, gas and natural gas as fuel, such as industrial boilers, civil boilers, ship boilers, drinking water boilers, steam locomotives, and the like. The coke-removing and soot-cleaning combustion improver is prepared from the following raw materials in percentage by weight: 12.5-30 percent of sodium nitrate, 17.50-25 percent of potassium nitrate, 5.50-11 percent of calcium nitrate, 15-19 percent of salt and 15-49.50 percent of borax. The coke-removing and soot-cleaning combustion improver can prevent the forming of new coke, is beneficial to the full combustion of the fuel, ensures that deposited chimney soot is fully combusted, reduces sticky carbon and carbide, plays a certain corrosion inhibition role to the boiler and prolongs the service life of the boiler.

The invention discloses a combustion heat load distribution control method of a CSP sheet billet roller bottom type tunnel heating furnace. The heating furnace comprises a heating section, a soak section, a swing section and a public holding section. According to the method, heat loads of combustion nozzles of the heating section, the soak section, the swing section and the public holding section are controlled. According to the combustion heat load distribution control method, the mixed combustion time of air and gas injected by the combustion nozzles is prolonged; the combustion efficiency and high-temperature combustion gas heat efficiency are improved; incomplete combustion heat losses and heat losses of discharge smoke are reduced; damage of secondary combustion to a heat exchanger is reduced; and finally the aims of reducing secondary combustion in a flue, reducing energy consumption of the heating furnace, improving the sheet billet heating quality, prolonging the service life of the heat exchanger and the like are achieved.

The invention discloses an industrial boiler for burning bio-briquettes. A front arch and a rear arch of which the front part is in an interdigitated shape are arranged in a body of the boiler; upper edges of two adjacent interdigitated parts of the rear arch are provided with corresponding grooves; a check block is arranged between two adjacent interdigitated parts; and two sides of the check block are fixedly connected with rotating shafts which are respectively arranged in the corresponding grooves. Furthermore, a figure-7 partition laminate is arranged above the rear arch; a movable division door is arranged between the rear end of the partition laminate and the rear arch; a circulating air pipe is connected with an air inlet of a draught fan outside the body through an air pipe; the air outlet of the draught fan is connected with a last-stage air bin of a chain grate; and a secondary air pipe at the air inlet on the side wall of a third combustion chamber is deflected toward the lower rear part, and is communicated with a main secondary air pipe outside the body. The industrial boiler has the advantages that: the bio-briquettes are efficiently and stably combusted; the boileris started at a high speed and has high heat efficiency; black smoke is not generated when the boiler is started; and the integral delivery of the boiler can also be realized.

The invention relates to a vertical environment-friendly boiler for triple dedusting burning wood and biological particle fuel in a boiler, belonging to heating technology. The invention is used for burning wood and biological particles to obtain hot water or steam, and overcomes the defects of black smoke emission, low thermal efficiency, and the like of the similar traditional boilers. The boiler comprises a wind chamber, a fire grate, a carbon powder and gas burning hearth, a first wind inlet, a secondary wind inlet, and a heat exchanger above the hearth. The boiler is characterized in that the hearth is provided with a porous boiler crown of an inclined air vent; the upper end of an inner liner is provided with a smoke blocking wall; a downward screwed smoke tube is arranged between the wall of the inner liner and a lower end socket; an upward screwed smoke tube penetrates through an upper closing plate and a lower closing plate; and a heat exchanger seat of a smoke diversion dedusting chamber in the shape of a ring cavity is arranged on the circumference of the lower end of the heat exchanger. The invention has the advantages of sufficient burning of carbon powders, sufficient gasification and high thermal efficiency. Smoke is dedusted three times in the boiler, and the exhausted smoke has low dust capacity. The invention can be manufactured in a split mode, and is convenient to transport. The tonnage can be greatly increased.

A device for increasing the combustion value of a boiler in a power plant, which relates to a boiler device in a power plant. The device adopts impingement flow, four nozzles, primary air opposing impact, double secondary air, four-corner tangential arrangement, reverse double tangential circle and air staged combustion, The four-nozzle primary air carries pulverized coal to form opposing impacts in the center of the furnace; the secondary air is divided into upper and lower winds, which are strong tuyere (10) and weak tuyere (9), both of which adopt the four-corner tangential combustion method at the center of the outlet jet. The line forms two different angles with the center line of the water wall, so that two imaginary tangential circles with the same direction but different diameters are formed in the center of the furnace. The device is equipped with four nozzles of the primary wind of the impingement flow, which collide against each other. In the impingement area, a high-concentration area where pulverized coal accumulates and a highly turbulent and oscillating area of ​​flow state will be formed. And because of the highly turbulent and oscillating nature of the impact zone, the contact between air and pulverized coal is increased, the mutual combustion effect of airflow is enhanced, and the stability and economy of combustion are improved.

The invention discloses a novel coal mill outlet temperature control system and its control method, wherein the control system includes a controller, a coal mill outlet temperature detector, a coal mill hot air regulating door, and the coal mill outlet temperature detector is located at the The controllers are connected to each other, and the controllers are connected to the hot air regulating door of the coal mill. Compared with the current control method, the control method involved in the present invention can solve the problem that the upper limit of the coal pulverizer outlet temperature in the current coal pulverizer outlet temperature control method is only set for a specific coal type and cannot be adapted to coal pulverizers. The quality of coal fed to the mill frequently changes and the operating value of the outlet temperature of the coal mill is low. It can improve the automation level of the operation of the coal mill, effectively increase the outlet temperature of the coal mill, reduce the coal grinding power consumption of the coal mill, and reduce the carbon content in the pulverized coal combustion product.