251results about How to "Reduce water consumption" patented technology

Method for extracting multi-metallic element from high chromium vanadium titanium octahedral iron ore

InactiveCN101294242AReduce cokingReduce water consumptionChromiumSulfuric acid
The invention discloses a method for extracting various metal elements from high chromium-vanadium titanomagnetite. The method is characterized in that high chromium-vanadium titanomagnetite concentrate is put in a rotary hearth furnace for direct reduction after feeding, briquetting and drying; during the reduction process, metallized pellets are obtained through the adjustment and the control of technological parameters such as reduction temperature, reducing atmosphere, etc., wherein, the metallization rate of the metallized pellets is more than 90 percent, and the carbon residue content thereof is 0.5 to 4.5 percent. The obtained metallized pellets are put in an electric stove, and then carbon-containing reducing agent that is pellets for smelting, wherein, the weight of the carbon-containing reducing agent is 8 to 35 percent of the metallized pellets; therefore, titanium slag and vanadium-chromium hot metal are obtained; the vanadium-chromium hot metal is performed through converting by the control of time and temperature under certain oxygen tension to obtain vanadium-chromium slag and semisteel. The titanium slag is processed through the existing technology of a sulfuric acid method or a chlorination method, the vanadium-chromium slag is processed according to certain working procedures, and then TiO2, V2O5 and Cr2O3 are finally extracted and obtained.

Underground areal alternate infiltrating irrigation system for large-land fruit trees and infiltrating irrigation method thereof

InactiveCN101904291AReduce water consumptionIncrease the proportion of short and medium branchesWatering devicesCultivating equipmentsRoot systemIrrigation
The invention relates to an underground areal alternate infiltrating irrigation system for large-land fruit trees, which comprises a water source, a filter, a main pipe, at least one group of branch pipe system and at least two groups of infiltrating irrigation components, wherein the infiltrating irrigation components consist of capillaries and a plurality of infiltrating irrigators communicated with the capillaries; branch pipes are communicated with the main pipe; valves are arranged on the branch pipes; and the at least two groups of infiltrating irrigation components are arranged soil around the roots of the fruit trees. The implementation method of the system comprises: firstly, opening one valve in a valve well; secondly, opening a water source and leading filtered water first to the main pipe, then to the branch pipes with the valves, later to the capillaries and the infiltrating irrigators and finally to root area on one side of each fruit tree; and finally, repeating the previous steps to complete the infiltrating irrigation of the root area on the other side of each fruit tree. The system and the method can realize the areal alternate infiltrating irrigation of the roots of the fruit trees, so that the roots of the fruit trees can grow in a half-dry and half-wet state and the conflict between the nutrition increase and the growth of the fruit trees is eliminated.
Owner:北京润郁丰林业灌溉技术有限公司 +1

Clean production process of sodium dichloroisoyanurate

The invention disclosed a process for cleanly producing sodium dichloro isocyanurate. The process comprises the following steps: putting cyanuric acid, calcium carbonate and water which are mixed and put into a batching kettle to be stirred into slurry according to the proportion, pouring the slurry into a pre-chlorination reactor to perform pre-chlorination reaction; putting the slurry after the pre-chlorinated into a differential circulator to perform chlorination reaction, and sending the residual chlorine generated in the chlorination reaction back to the pre-chlorination reactor for reutilization; using a centrifugal machine to perform liquid-solid separation on the materials after the chlorination; performing settlement dechlorination on the separated liquid, adding hydrochloric acid to the liquid to generate cyanuric acid and chlorine after decomposition, and sending the chlorine back to the pre-chlorination reactor; washing a filter cake obtained after centrifuging with water, and sending the washing water after the washing back to the batching kettle; and using sodium carbonate to perform solid phase neutralization on the filter cake after the washing, and using airflow to dry the filter cake after the neutralization so as to obtain the sodium dichloro isocyanurate product. The process adopts continuous reaction to produce the sodium dichloro isocyanurate, so that the production efficiency is greatly improved; besides, the production process does not discharge wastewater, thus the environment is not polluted at all.

Comprehensive utilization process of glutamic acid crystal mother liquid

A comprehensive utilization process of a glutamic acid crystal mother liquid comprises the following steps: one, leading the glutamic acid crystal mother liquid into a membrane separation system, allowing solid particles, thalli, proteins, polysaccharides and a colloid in the mother liquid to be intercepted by a membrane, and making glutamic acid left in a membrane filtrate; and allowing the membrane filtrate to go to a next step for treatment; two, leading the membrane filtrate into an ion exchange system, adsorbing glutamic acid by an ion exchange resin, when the content of glutamic acid in an ion exchange tail liquid is not more than 0.2%, stopping column-loading, adding an eluting agent, eluting, allowing glutamic acid to go into the eluate, collecting the eluate, and recycling glutamic acid from the eluate. The membrane separation technology and the ion exchange technology are combined, recycling of glutamic acid from the crystal mother liquid is realized, at the same time, a protein feed is prepared from the thalli and the proteins intercepted by the membrane, an organic fertilizer is prepared from the ion exchange tail liquid through slurry-spraying granulation, the whole process allows useful substances in the crystal mother liquid to be totally recycled, comprehensive utilization of the resources is thoroughly achieved, waste is turned into treasure, and significant economic benefits are achieved.

Roasting-free evaporation-free method for producing cupric sulfate from zinc hydrometallurgy acid-wash copper dross

The invention provides a roasting-free evaporation-free method for producing cupric sulfate from zinc hydrometallurgy acid-wash copper dross, which comprises the following steps: stacking acid-wash copper dross for autoxidation; leaching the oxidated acid-wash copper dross at 75-100 DEG C according to a solid-to-liquid ratio of 1:(3-6) for 0.5-2.5 hours by using a 50-250g/L sulfuric acid solution as a leaching agent, thereby obtaining a slurry; filtering the leached slurry at 75-100 DEG C to respectively obtain a leach solution and a leached mud; and conventionally cooling to crystallize the leach solution, and carrying out centrifugal separation to obtain cupric sulfate and crystallization mother liquor. The oxidation of the acid-wash copper dross does not need roasting or addition of any oxidant, does not introduce any impurity, and is simple to operate. The invention does not have the process of concentration by evaporation, has the advantages of high production rate, obvious water-saving effect and obviously lower energy consumption (only about 10% of the traditional technique of concentration by evaporation). The invention also has the advantages of high resource comprehensive utilization ratio, no waste discharge and low environmental protection pressure.

Anticorrosive, anti-explosion and environment-friendly type liquid ring vacuum unit

The invention relates to an anticorrosive, anti-explosion and environment-friendly type liquid ring vacuum unit. The main structure of the unit is composed of a liquid ring vacuum pump, a heat exchanger, a gas-liquid separator, a pipeline type filter, a point contact anti-explosion vacuum meter, an anti-explosion motor, a valve and a pipeline. Unit flow passage components are made of anticorrosive materials or are subjected to anticorrosive treatment. Anticorrosive electrical elements authenticated nationally are adopted, gas or gas-water mixtures which are flammable and combustible and have certain corrosivity can be pumped, and the unit is particularly suitable for industries of biological pharmacy, medical intermediates, fine chemicals, pesticides, alkali chemical engineering, fluorine chemical engineering and the like needing acquisition of vacuum environments. The anticorrosive, anti-explosion and environment-friendly type liquid ring vacuum unit can solve the problems that traditional equipment is large in water resource consumption, large in sewage discharge capacity and high in equipment failure rate; meanwhile, the unit can be used for pumping flammable and combustible and corrosive media, the environment is better protected, water resource consumption is reduced, the equipment failure rate is reduced, the safety accident risk is lowered, and extremely-large social and economic benefits are achieved.

Energy-saving water heater

The invention relates to an energy-saving water heater, which relates to the technical field of water heater and which solves the technical problem of saving energy. The device comprises a water heater, an electrically controlled three-way valve and a temperature controller, wherein a water inlet of the water heater is connected with a municipal water supply pipeline sequentially via a one-way valve and a water intake stop valve, and a water outlet of the water heater is connected with a water inlet of the electrically controlled three-way valve via a water discharge stop valve; one of two water outlets of the electrically controlled three-way valve is connected with the water inlet of the water heater via an electrical pump and the other one is connected with a water discharge terminal component; a temperature sensing tip of the temperature controller is arranged inside a pipeline through which the water discharge stop valve is connected with the electrically controlled three-way valve, and a control signal output end of the temperature controller is electrically connected with control switches of the electrical pump and the electrically controlled three-way valve respectively. The device according to the invention can save the water consumption amount of water heater and brought heat energy generated by water heater into full utilization.
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