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

The invention relates to a cement kiln head waste heat power generation method and system. The waste heat power generation system comprises a grate cooler, a kiln head AQC furnace, a high temperature superheater boiler and a connecting air hose, wherein a high temperature extract opening and a medium temperature extract opening which are connected with a high temperature air hose and a medium temperature air hose are formed in the grate cooler, the kiln head AQC furnace is communicated with the medium temperature air hose through pipelines, a high temperature superheater boiler air inlet and a high temperature superheater boiler air outlet are formed in the high temperature superheater boiler, the high temperature superheater boiler air inlet is connected with the high temperature air hose through a pipeline, the high temperature superheater boiler air outlet is communicated with the kiln head AQC furnace through a pipeline, one end of the connecting air hose is communicated with the high temperature air hose, and the other end of the connecting air hose is communicated with the medium temperature air hose. According to the method and system, the connecting air hose is arranged between the high temperature air hose and the medium temperature air hose, the sufficient and surplus air temperature in the high temperature section is led to the medium temperature section for use, the design technology that the high temperature and the medium temperature are used separately is broken, utilization of a heat source is more reasonable, and the work efficiency of the kiln head AQC furnace is greatly improved.

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 thering 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 method used for improving cement raw material grindability and reducing TOC discharge with kitchen waste. According to the method, the kitchen waste collected from municipal solid waste is mixed with raw materials which are used for preparing cement raw material; and an obtained mixture is delivered into a flour mill for grinding, wherein the outlet of the flour mill is provided with a gamma-Metric analyzer used for real-time monitoring on chemical components of the discharged cement raw material. According to the method, kitchen waste is added into a raw material grinding system so as to improve grindability of the cement raw material, and reduce power consumption of the flour mill; ash obtained via combustion of the kitchen waste can be used for replacing clay raw material; TOC discharge of a cement production system is reduced at the same time; a large amount of organic substances with relatively heat value are obtained via drying of the kitchen waste, and are burnt in a preheater so as to generate heat energy, so that the temperature of waste gas is increased, and waste heat power generation is increased; the kitchen waste is subjected to low-temperature drying grinding, a large amount of residual heat energy obtained via cerement plant waste heat power generation is recycled, a kitchen waste dewatering problem is solved, and processing cost of the kitchen waste is reduced.

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 hightemperature 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 discloses a vertical roller mill bypass graded drying raw meal preparation system, the discharge port of the raw material hoist is connected to the feed port of the vertical roller mill, and the discharge port of the vertical roller mill is connected to the mill The feed port of the tail lifter, the discharge port of the grinding tail lifter is connected to the feed port of the drying equipment, the discharge port of the drying equipment is connected to the feed port of the dry material lifter, and the discharge port of the dry material lifter Connect the inlet of the V-type powder separator of the primary classification equipment, the air outlet of the V-type powder separator is connected to the air inlet of the vortex powder separator of the final classification equipment, and the air outlet of the vortex powder separator is connected to the air inlet of the cyclone collector. The air outlet of the cyclone collector is connected to the air inlet of the circulating centrifugal fan, the air outlet of the circulating centrifugal fan is connected to the air inlet of the vertical dryer, and the air outlet of the vertical dryer is connected to a V-shaped selection The air inlet of the powder machine; the invention makes full use of the system to facilitate reasonable adjustment and control of the process parameters of the system, so as to achieve the purpose of increasing production and reducing consumption of the system.

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 discloses a fuel coal combustion-supporting sulfur fixing agent which is prepared from the following components in parts by weight: 2 to 6 parts of nitrate, 10 to 15 parts of ferrocenium tetrafluoroborate, 0 to 3 parts of industrial edible salt, 2 to 6 parts of calcium glycinate, 2 to 4 parts of a sulfur fixing agent, 0.5 to 2 parts of carboxylate, 6 to 8 parts of a surfactant and 100 parts of water.