139results about How to "Increase the heating surface" patented technology

The invention discloses a W flame boiler device for realizing a multi-ejection grading combustion and a method thereof, and relates to a W flame boiler device of a grading combustion and a method, which aims at the problems of high NOx exhaust, high fly ash combustible material content, late fire of the pulverized coal airflow and bad flame stability in the W type flame boiler referred in the background technology.The method comprises the following steps of: ejecting internal and external secondary air at the air speed of 35-65m / s step by step and downwards ejecting by carrying a concentrated coal dust airflow at the air speed of 10-20m / s to realize first and second stage grading combustion; and injecting arch lower secondary air at the air speed of 35-65m / s into the lower heath by an arch lower secondary air nozzle to realize third stage grading combustion. A concentrated coal dust airflow nozzle, an internal secondary air nozzle, a light coal dust airflow nozzle and an external secondary air nozzle are sequentially distributed from the center side of the hearth to the water-cooling wall of the front and rear wall of the lower hearth on a boiler arch; and the front and rear wall of the lower hearth is provided with the arch lower secondary air nozzle along the width direction of the hearth. The invention can greatly reduce NOx exhaust and fly ash combustible material content when used for the W flame boiler.

The invention discloses a forced water circulation high-capacity hot water boiler of a circulating fluidized bed, which relates to a hot water boiler of a fluidized bed, and aims to ensure water circulation safety and power failure protection of a high-capacity hot water boiler of a circulating fluidized bed. A water supply distribution header is connected with lower coal economizers; the lower coal economizers, middle coal economizers and upper coal economizers are sequentially connected with one another; the upper coal economizers are connected with a coal economizer upper header; the coal economizer upper header is connected with a collection water bag by a coal economizer coating pipe; the collection water bag is connected with water cooling wall lower headers by a descending pipe; the water cooling wall lower headers are connected with a hearth water cooling wall; the hearth water cooling wall is connected with water cooling wall upper headers; the water cooling wall upper headers are connected with a boiler cylinder by extraction pipes; the water supply distribution header is connected with a separator water cooling sleeve by a water cooling sleeve water intake pipe; the separator water cooling sleeve is connected with the boiler cylinder by a water cooling sleeve water outlet pipe; the boiler cylinder is connected with the water cooling wall lower headers by communicating pipes, and is connected with the water supply distribution header by a power failure water supply pipe. The forced water circulation high-capacity hot water boiler provided by the invention is applied to large concentrated heat supply and warming.

The invention relates to an intermittent vacuum pyrolysis reactor with a built-in heat conducting pipe, which comprises an upper end cover, a barrel, a pyrolysis product discharging pipe, a thermocouple sheath, an air inlet pipe, a lower end cover, an O-shaped sealing ring, a baffle and the built-in heat conducting pipe. The upper end cover and the lower end cover are respectively arranged on the upper and lower ends of the barrel; the thermocouple sheath, the air inlet pipe and the pyrolysis product discharging pipe are arranged on the upper end cover; the lower end of the pyrolysis product discharging pipe is connected with the baffle; the thermocouple sheath and the air inlet pipe are respectively positioned on two sides of the pyrolysis product discharging pipe and pass through the flared baffle; the upper end cover and the barrel are sealed by the O-shaped sealing ring; and the built-in heat conducting pipe is welded in the center of the lower end cover. Through the structure, the reactor of the invention not only strengthens the heat conducting effect of the device, effectively solves the problem of the incomplete pyrolysis reaction and much more by-products caused by uneven heating and has excellent sealing property, but also can effectively solve the problems that the end cover is difficult to open because the pyrolysis product solidifies and deposits at the joint between the end cover and the barrel and the like. The device is convenient to disassemble and operate.

The invention discloses a gas and solid separator of a recirculating fluidized bed boiler, which comprises a downstream flue and an upstream flue which are partitioned by a guiding flue gas up-down replicating film type screen, wherein the downstream flue and the upstream flue are communicated with storage bins hermetically installed below the downstream flue and the upstream flue through a turning channel, the front upper part of the gas and solid separator is provided with a flue gas inlet, the back upper part of the gas and solid separator is provided with a flue gas outlet, and four walls of the gas and solid separator are all heated water-cooling walls integrated with the boiler; and the gas and solid separator also comprises a uniform flow separating pipe bundle positioned on the turning channel, the upper end of the uniform flow separating pipe bundle on the turning channel is communicated with the guiding flue gas up-down replicating film type screen, and the lower end of the uniform flow separating pipe bundle on the turning channel is communicated with a lower transverse container. The invention also discloses a recirculating fluidized bed boiler containing two sets of gas and solid separators. The recirculating fluidized bed boiler has the advantages of wide application range, advanced process, simple manufacturing and installation, energy saving, consumption reduction and obvious emission reduction.

The invention discloses a circular pipe communicated, spliced, edge-pinched, and welded pressure-bearing heat exchanger, and a manufacturing process thereof. The heat exchanger comprises two headers, wherein a tap water communication pipe is fixedly connected between the two headers; a hot air heat supply pipe passes through the tap water communication pipe; each header is formed by welding two arc plates; the plate edges of the arc plates are flanged outwards; the plate edges of the two arc plates are aligned with each other and are subjected to edge-pinching and self-fluxing welding to form a circular tubular header cylinder body; head blocking plates of the headers are flanged outwards and are embedded at two ports of the circular tubular headers; and the two edges are aligned with a pipe wall surface, are spliced and are subjected to the edge-pinching and the self-fluxing welding to form the headers. An installation hole is punched on each arc plate; the installation hole is stretched inward an arc to form an edge; the aperture and the height of are stretched according to the arc plates; and the end surfaces of the two ends of the tap water communication pipe are subjected to R-angle cutting according to the stretching hole diameter and the stretching height of the arc plates, and then the tap water communication pipe is inserted into the installation holes stretched from the arc plates, are matched with each other, are spliced and are subjected to edge-pinching and self-fluxing welding connection. In the heat exchanger, welding seams are spliced, the edge-pinching welding is easy to realize, and water leakage is avoided; and the heat exchanger is good in pressure-bearing performance, and low in maintenance cost.

Techniques for designing and creating energy efficient cookware are provided. In accordance with the techniques cookware can include a cookware base having a cooking surface and heating surface. The heating surface can have a pattern of fins forming heat exchange channels. The channel fins can improve energy transfer while providing even distribution throughout the cooking surface. Methods of making the energy efficient cookware are provided. Methods of direct forming channel fins by impact bonding and forging are disclosed.

Disclosed is a blade server oriented box-sleeving type heat preservation / heat dissipation device. An inner-outer box sleeving structure is adopted, an inner box is an electrical appliance bearing box body, and an outer box is a heat preservation / heat dissipation box body. An upper and a lower flat surface of the outer box of the device are air duct heat preservation / heat transfer surfaces, the rest surfaces are heat insulation surfaces, heat dissipation and heat preservation of a case are controlled by controlling on and off of air flow in upper and lower heat transfer air ducts, and finished product heat dissipators are arranged on an upper air duct plate by surface mounting to enlarge a heating surface of the outer box so as to improve heat dissipation efficiency. Heating chips in the inner box adopt an upward convection and downward conduction dual-path heat transfer mode to lower heat flux and improve heat transfer efficiency. The inner box and the outer box are separated and fastened by means of separation and reunion of taper pin holes. The device takes economical and safe natural air as a heat transfer medium, and has a safe, energy-saving and compact heat preservation / heat dissipation function without depending on cooling facilities but by structural design.

The invention discloses a method for purifying 1, 4-dihydroxy anthraquinone by sublimation under high vacuum. The method comprises the following preparation steps: feeding; dehydrating and fusing; purifying by sublimation; cooling and condensing; opening a tank, collecting and weighing after cooling is finished; and producing a next batch of 1, 4-dihydroxy anthraquinone. By the method provided by the invention, other chemical raw materials are not added, chemical reaction does not exist, waste water does not exist either, a small amount of waste gas can be adsorbed and removed by activated carbon, waste residues are incinerated by qualified units, and therefore, emission of the waste gas, the waste water and the waste residues is avoided basically. Compared with purification by a chemical method and a solvent method, the method has the advantages that the purity of the product is high (greater than or equal to 99%, the yield is high (greater than or equal to 97%), and is environmentally friendly; and secondary pollution is avoided. In addition, the invention further discloses a honeycomb sublimator which is designed according to the principle of infinitesimal. Compared with a reaction kettle type sublimator, the honeycomb sublimator has the features that sublimation time is shortened by more than 5 times, and energy is saved by 70%.

The invention relates to a fast molten salt furnace, which is characterized by comprising a vacuum mechanism, a melting mechanism, a stirring mechanism and a control mechanism, wherein the melting mechanism, a salt core mold 3 and a sealing sleeve 6 are arranged in a vacuum furnace casing 1, the stirring mechanism is arranged in the melting mechanism, the control mechanism is arranged under the vacuum furnace casing 1, the melting mechanism is provided with a sensing heating coil 5, a heat insulation sleeve 13 is arranged in the sensing heating ring 5, and a crucible core 14 is arranged in an alloy crucible 4; a stirring blade 9 is arranged on a stirring sleeve 10, and a stirring shaft 15 is arranged in the stirring sleeve 10, a core connecting shaft 8 is arranged under a clutch 7, and a stirring motor 12 is arranged under a telescopic sleeve 11. The crucible core arranged in the alloy crucible, the stirring sleeve and the stirring blade are adopted, the area of a sensing heating body is effectively increased, and the salt melting speed is accelerated; the telescopic sleeve clutch arranged under the core connecting shaft is adopted, the distance between clutch contact blocks is increased, the reverse turning of induction furnace can be conveniently realized, and the productivity of the molten vacuum salt furnace is improved.

The invention discloses a turbine blade molding line which includes a roughcast warehouse, a conveyer, a heating furnace, a blank forging machine, a blade forming machine, ingot stripper and edge-trimming machine; a conveying swash plate is installed between the said heating furnace and blank forging machine to convey by conveyor; the ingot stripper stripes the mould; blade after the de-molding is transported to edge-trimming machine for end trimming; the said heating furnace includes shell, heater element and sigmoid curve conveying mechanism; and both ends of the sigmoid curve conveying mechanism come out from the shell, and heater element is arranged inside of the shell, and sigmoid curve conveying mechanism is located between heater elements. The invention can realize a continuous molding of turbine blades, which improves molding efficiency, and the blank is heated evenly.

The invention discloses a combustion heat recovery device for combustible exhaust gas of a carbonized oven. The device comprises a waste heat recovery cavity and a waste heat recovery pipe which passes through the waste heat recovery cavity. A combustion port and a combustion product exhaust port are formed in the waste heat recovery cavity. A heat-conducting medium flows in the waste heat recovery pipe. The combustion heat recovery device for combustible exhaust gas of the carbonized oven of the structure has the advantages of being simple to operate, convenient to use and good in heat recovery effect, and the comprehensive energy consumption in a production process is greatly reduced.

The invention discloses a clothes drier. The drier comprises a drier housing, an inner cavity and a clothes hanging frame, a drier machine cover is arranged on the top of the drier housing, and an operation panel is arranged on the surface of the drier machine cover; an air-heater is arranged between the drier housing and the inner cavity, and an air inlet is formed in the upper portion of the inner cavity; an infrared heating module is arranged at the bottom of the inner cavity; the clothes hanging frame comprises a central rotary shaft, a plurality of clothes hanging rods and a clothes placing round plate, and the central rotary shaft is connected with a rotating driving motor; a single-chip computer is arranged between the drier housing and the inner cavity, a timer module is arranged in the single-chip computer, and power switches of the air-heater and the infrared heating module are connected with the single-chip computer. According to the clothes drier, hot wind and infrared lamps are used for heating from different angles, so that clothes are uniformly heated to improve the drying efficiency; the clothes hanging frame is provided with the clothes hanging rods and the clothesplacing round plate, and the clothes are hung on the clothes hanging rods or placed smoothly on the clothes placing round plate to increase heated surfaces of the clothes and accelerate the drying speed.