33results about How to "Increase waste heat power generation" patented technology

The invention discloses a system and a method for using sintering waste heat to generate electricity and belongs to the technical field of sintering waste heat electricity generation of the steel works. The system comprises a sintering machine, a hot gas outlet pipe, a gas waste heat boiler, a main exhaust fan, a ring cooling machine, a first and second stage heat waste gas collecting pipe, a waste gas heat boiler, a draught fan, a circulating fan, a chimney, a low pressure steam drum, a middle pressure steam drum, a feed pump, a pressure reducing valve, a collecting header, a steam turbine, a generator, a condenser and a condensate pump. The invention realizes utilizing the waste heat of the non-desulfurization flue header of the sintering machine without arranging an inducing fan by reasonably designing the hot gas connecting mode of the air box at the tail part of the sintering machine and the gas resistance of the waste gas heat boiler. First and second stage sealing covers of the ring cooling machine are uniformly provided with a plurality of waste gas branch pipes so as to realize uniform distribution of the waste gas pressure in the sealing covers and reduce air leakage. Part of waste gas is adopted to circulate to improve the temperature of the waste gas. Compared with the existing system for using sintering waste heat to generate electricity, the system of the invention sufficiently uses the waste heat of the sintering system, improves the waste heat generated energy and reduces the operation cost.

The invention discloses a system for regulating and optimizing smoke by power generation and recycle of residual heat of a sintering ring cold machine, which mainly comprises a ring cooling machine, a ring cooling machine wind box, a ring cooling machine wind chamber, a switching baffle door, a dual-pressure boiler without resisual heat and a steam filling and condensing type dual-pressure steam turbine, wherein the ring cooling machine wind chamber is divided into a high-temperature wind chamber and a low-temperature wind chamber which are respectively connected with the dual-pressure boilerwithout resisual heat through inlet flues, the steam outlet of the dual-pressure boiler without resisual heat is connected with the steam filling and condensing type dual-pressure steam turbine, and the outlet of a sediment chamber of the dual-pressure boiler without resisual heat is connected with a circulation fan through the flues and a wind complementing door. The invention has the highest efficiency in recovering residual heat, can use the resisual heat of sintering mineral materials at most, keeps stability, high efficiency and contineous operation for power generation by using the residual heat, and has important meaning for steal and iron plants.

The invention provides a biomass energy IGCC technology which is characterized in that the technology comprises the following steps that: (1) the biomass raw material is gasified to be converted into the combustible gas which is dedusted and decoked as well as purified and is sent to a gas internal-combustion engine to generate electricity; (2) the biomass raw material or the clinker generated in the gasification and power generation process in the step 1 or the mixture of the two is sent to a steam boiler to be burnt in order to generate the superheated steam; the exhaust heat of the gas internal-combustion engine of the step 1 is inlet to an exhaust-heat boiler to generate the superheated steam; (3) the superheated steam generated by the steam boiler and the exhaust-heat boiler of the step 2 is sent to a turbonator set. The biomass energy IGCC technology takes full advantage of the heat energy and the product generated by each processing step in the biomass energy gasification and power generation process and generates electricity circularly, thereby greatly raising the power generation efficiency, taking full advantage of waste materials and lowering the running cost. The invention also discloses a power generation system for realizing the biomass energy IGCC technology.

A CO2 circulation and gas complementary combustion type sintering waste heat power generation method belongs to the sintering waste heat utilization field. The method is characterized in that, CO2 is used for replacing air to be used as a cooling medium of sinter, the specific heat of the CO2 is greater than the air, the CO2 can more efficiently recover sensible heat of the sinter, thereby improving the parameters of steam which is used for power generation and increasing the power generation amount; cooling air carries out closed circulating cooling of the sinter and absorbs the sensible heat of the sinter during passing by a sinter layer, the heat is released at a waste heat boiler, the heat is circulated to a circulating cooling machine for cooling the sinter after temperature decrease, the closed circulation can reduce heat loss due to radiation, recover the heat to the maximum extent and simultaneously reduce the leakage amount of the CO2; a gas complementary combustion type high temperature superheater is arranged behind a low temperature superheater, thereby being capable of stabilizing the parameters of the steam when the temperature of the sinter is fluctuated, and flue gas can also be used for supplementing the CO2 amount in the closed circulating cooling. The method has the advantages of improving the parameters of the steam, greatly improving the sintering waste heat power generation capacity and having environmental protection benefits.

The invention provides a siphon air-cooling tower-type solar thermal power generation device with an exhaust valve. The siphon air-cooling tower-type solar thermal power generation device is composed of a reflecting mirror array, a vertical tower, a tower-top heat collector, a steam turbine and a cylindrical condenser, wherein the bottom and the upper end of the cylindrical condenser respectively comprise an air inlet channel and an air outlet channel; an exhaust-steam condenser is arranged in the cylindrical condenser; and the air inlet channel, the interior of the cylindrical condenser and the air outlet channel constitute an air channel. The siphon air-cooling tower-type solar thermal power generation device is characterized by comprising an automatic valve at the top end of the exhaust-steam condenser. The siphon air-cooling tower-type solar thermal power generation device has the beneficial effects that the air inlet channel, the interior of the cylindrical condenser and the air outlet channel constitute the air channel and a siphon effect is used to realize forced air cooling. Compared with water cooling, the forced air cooling has the advantages of no need of power and cooling water, greatly reduced investment and site selection conditions, capabilities of saving operation cost and high reliability. The automatic valve is arranged at the top end of the exhaust-steam condenser, and the outer end of the automatic valve is communicated with a negative pressure source so as to remove noncondensable gas in the steam turbine. Four embodiments are presented with combination of attached drawings.

The invention relates to a two-stage flash evaporator of a waste heat power generation system of a cement kiln The waste gas utilization efficiency of the cement kiln can be particularly improved during waste heat power generation by the aid of the two-stage flash evaporator. The two-stage flash evaporator is characterized in that two flash evaporators are serially connected with each other, a coal economizer is connected with a water inlet of the primary flash evaporator by a pipeline, a water outlet of the primary flash evaporator is connected with a water inlet of the secondary flash economizer, a water outlet of the secondary flash evaporator is connected to a boiler feed water pump, and a steam outlet of the primary flash evaporator and a steam outlet of the secondary flash evaporator are respectively communicated with a rear stage of a steam turbine to do work. The two-stage flash evaporator has the advantages that a system is simple and is low in cost, convenient to operate and adaptive to the characteristic of sharp fluctuation of waste gas parameters of the cement kiln, maximum generated power can be acquired from low-grade heat sources, the exhaust temperature of a boiler can be about 90 DEG C under the control, the heat utilization rate of low-temperature flue gas can be increased, and accordingly the purpose of utilizing energy to the greatest extent can be achieved.

The invention discloses a siphon air cooling method for a tower-type solar heat power generation device. A cylindrical condenser is used in the method, and the bottom and the upper end of the cylindrical condenser are respectively provided with an air inlet passage and an air outlet passage; the air inlet passage, the inner part of the cylindrical condenser and the air outlet passage form an air flue; and an exhaust steam condenser in the air flue is cooled by using the heat siphon effect. The tower-type solar heat power generation device manufactured by the method consists of a reflector array, a vertical tower, a tower top heat collector, a steam turbine and the cylindrical condenser. The device is characterized in that: the bottom of the cylindrical condenser is provided with the air inlet passage, and the upper end of the cylindrical condenser is provided with the air outlet passage; and the exhaust steam condenser of the solar heat power generation device is arranged in the cylindrical condenser. The air inlet passage, the inner part of the cylindrical condenser and the air outlet passage form the air flue with low air resistance. The invention has the advantages that: power is not required in heat siphon air cooling, cooling water is not required, the construction land can be reduced, the investment is reduced, the operating cost and the internal power utilization are reduced, and the reliability is improved. Four embodiments are shown in attached figures.

The invention discloses a method for improving cement production waste heat power generation capacity and belongs to the technical field of cement production waste heat power generation. The method comprises the following steps that (a) a certain amount of gangue is added to cement raw materials, and the heating capacity of the cement raw materials is improved; (b) the diameter of an impeller of a clinker cooling draught fan is increased by 5% to 10% under the condition that the width is not changed, and a motor of the cooling draught fan is not changed; (c) a water preheating pipeline is additionally arranged at a waste gas outlet of a preheater, and the water preheating pipeline is communicated with a water feeding channel of a power generating boiler. By the adoption of the method, the cement production waste heat power generation capacity can be increased by 8% to 10%, and the comprehensive benefits of cement production can be effectively increased.

The invention discloses a cement clinker shock cooling process adopting a material layer self-protection technology. An original third-generation grate cooler shell is dismounted and overall replaced with a LANE type tail-mounted rolling fourth-generation grate cooler; all fans are newly purchased, a waste heat power generation air pipe and a coal mill air pipe are installed between a settling chamber above the grate cooler and a mill air inlet, and an auxiliary air pipe is additionally arranged on a waste air pipeline. The cement clinker shock cooling process has the advantages that a large-area fixed grate bed, a thick material layer and an air volume adjusting valve are arranged, clinker shock cooling is truly achieved, and the clinker quality is improved while the cooling effect is guaranteed; the heat efficiency is improved by 2%, and the corresponding coal consumption is greatly reduced; the heat recovery effect is improved, and the middle air temperature is greatly increased.

The invention discloses an electricity generating method for increasing cement production waste heat and relates to the technical field of cement production. The method comprises the following steps that 1, a heat conduction fin is installed on the inner wall of a cement cellar, and the heat conduction fin is connected with a steam water tank; 2, carbonaceous mudstone particles are added to a cement raw material, and heat generated by the carbonaceous mudstone particles in the material compounding process and heat of the cement raw material are transmitted to the steam water tank through the heat conduction fin; 3, a steam superheater is installed on an air hose of the cement cellar, heat is collected by the steam superheater in the process that the air hose of the cement cellar conducts heat dissipation, and the heat is transmitted to a steam turbine generator unit through a heat high pressure machine. By means of the electricity generating method, the waste heat can be utilized reasonably for generating electricity, the waste heat utilization rate is high, energy is saved, heat generated in the production process can be increased, and waste heat electricity generating capacity is effectively raised.

The invention discloses a production equipment and preparation method of a nano environment-friendly fire coal combustion-supporting sulfur-fixing agent. The production equipment comprises a reaction kettle body, a top groove is formed in the top of the reaction kettle body, a mounting groove is formed in the top of the top groove, connecting frames are arranged on the two sides of the top of the mounting groove, a powder flow guide assembly is arranged in the middle of the interior of the mounting groove, and fixing seats are arranged at the bottoms of the two sides of the reaction kettle body. The combustion-supporting sulfur-fixing agent for the fire coal can improve the combustion condition of a furnace body, enhance the air permeability of a coal seam, enable the coal to be fully combusted, improve the heat efficiency of the fire coal, reduce the emission of smoke dust, improve the heat conduction efficiency, fix sulfur, reduce smoke, reduce the emission of CO and SO2 and reduce environmental pollution, so that the purposes of supporting combustion, fixing sulfur, saving energy and desulfurizing are achieved; and the coal saving rate of a cement kiln or a boiler can reach 10% or above, the yield of the cement kiln is increased by 5% or above, the firepower is increased by 10% or above, NOx, dust and the like in waste gas can be effectively reduced, and the waste heat generating capacity of the cement kiln can be increased by 2 kWh/t or above.

The invention belongs to the technical field of heat recovery coke ovens in the metallurgical industry, and particularly relates to a tertiary air inlet for a heat recovery coke oven, wherein the tertiary air inlet is characterized in that the tertiary air inlet is arranged on the pipe wall of an ascending pipe and comprises an air inlet pipe and a valve component, an included angle of 45-60 degrees is formed between the axis direction of the air inlet pipe and the pipe wall, and the inner end of the air inlet pipe is flush with the inner side of the pipe wall of the ascending pipe or continues to stretch into the ascending pipe by 10-50 mm; and the ratio of the diameter of the air inlet pipe to the diameter of the ascending pipe mounting section is 1:(3-8). Compared with the prior art, the tertiary air inlet has the beneficial effects that the problems that the generation amount of coal gas is greatly changed along with volatile components, coking time and the like of mixed coal in the heat recovery coke oven production in the current metallurgical industry, the air introduction amount of the primary and secondary air inlets of the coke oven cannot be accurately matched with raw coke oven gas, so that combustible components still escape along with a gas collection system, and the environment is polluted are solved.

The invention discloses a pressure-stabilizing and air-controlling device for an inflatable beam of a grate cooler. The pressure-stabilizing and air-controlling device comprises a first mute diffuserpipe, a flow stabilizing pipe, a second mute diffuser pipe, a rectifying and pressure-stabilizing pipe and pressure dividing pipes; the first mute diffuser pipe and the second mute diffuser pipe are both of a V-shaped body structure; the large end of the first mute diffuser pipe is connected with the small end of the second mute diffuser pipe through the flow stabilizing pipe; the large end of thesecond mute diffuser pipe is connected with the at least two pressure dividing pipes; a rectifying and pressure-stabilizing impeller is arranged in the rectifying and pressure-stabilizing pipe; a main shaft is fixedly installed in the middle of the rectifying and pressure-stabilizing impeller and rotationally installed in the rectifying and pressure-stabilizing pipe; a driving motor and a speed reducer are fixedly installed at the outer side of the rectifying and pressure-stabilizing pipe; an output shaft of the driving motor is connected with an input shaft of the speed reducer; and an output shaft of the speed reducer is fixedly connected with the main shaft. The pressure-stabilizing and air-controlling device is simple in structure and easy to machine and manufacture, and the air pressure of air blown out of the pressure dividing pipes is uniform and stable.

The invention discloses a method for controlling ultralow emission of sintering flue gas. The method is characterized by comprising steps as follows: low-temperature sintering flue gas in a large coldair flue is introduced into a sintering ore cooling system, the temperature of the sintering flue gas is increased through sintering ore sensible heat, then the heated flue gas is introduced into a waste heat power generation system, and the flue gas obtained after power generation is subjected to desulfurization and denitrification and then is discharged out of a chimney through a main exhaust fan. According to the method for controlling ultralow emission of the sintering flue gas, the cost of a sintering flue gas emission reduction system can be reduced, the waste heat power generation capacity of the sintering machine is increased, and good application prospects are achieved.

The invention discloses an alarm type sintering afterheat power generation system based on a current limiting power supply circuit. The system comprises a sintering machine hot smoke system, a hot waste gas afterheat utilization system and a sintering afterheat power generation thermodynamic system, wherein a current limiting power supply output system connected to an output end of a turbogenerator is arranged in the sintering afterheat power generation thermodynamic system, and comprises a temperature alarm circuit, the current limiting power supply circuit and an accumulator or electric equipment connected with the current limiting power supply circuit; and the current limiting power supply circuit consists of a current limiting circuit and a power supply circuit. The system improves the product stability, prolongs the product life, and improves the internal operation circuit of the product to prevent the damage of the accumulator or the electric equipment caused by overhigh voltage fluctuation.

The main energy acquisition method required for supercritical carbon dioxide power generation in cement plants, the process and equipment characteristics of high-temperature thermochemical reaction kiln systems using clinker in cement plants, and CO ₂ The energy storage device directly stores part of the heat energy of strong radiation/conduction of high-temperature equipment and/or high-temperature materials, and solves the specific adverse effects caused by the high-temperature heat energy radiated/conducted by high-temperature equipment and/or high-temperature materials. The high temperature heat energy converts CO ₂ Fluid conversion to high-pressure hot supercritical CO with high energy density ₂ fluid, as supercritical CO ₂ The main energy source for generator sets to generate electricity. The present invention solves the adverse effects of various types of high-temperature heat energy in various links in the cement clinker production process on the kiln system operating conditions, clinker cooling quality, equipment safety and staff safety, etc., and develops a supercritical CO ₂ A series of high-quality high-temperature energy sources for high-efficiency power generation by the power generation system, the method is simple and has industrial practicability.

The invention discloses an alarming type sintering waste heat power generation system based on a voltage-stabilizing power circuit. The alarming type sintering waste heat power generation system based on the voltage-stabilizing power circuit comprises a sintering machine hot flue gas system, a hot exhaust gas waste heat utilizing system, and a sintering waste heat power generation thermodynamic system. A voltage-stabilizing power output system connected to the output end of a turbogenerator is further arranged in the sintering waste heat power generation thermodynamic system, and the voltage-stabilizing power output system comprises a temperature alarming circuit, the voltage-stabilizing power circuit and a storage battery or electric equipment connected with the voltage-stabilizing power circuit. The voltage-stabilizing power circuit is composed of a voltage-stabilizing circuit and a power circuit. By means of the sintering waste heat power generation system, the stability of the product is improved, the service life of the product is prolonged, the circuits running in the product are added and modified, and the situation that because voltage fluctuation is too high, the storage battery or the electric equipment is damaged is avoided.