55results about How to "Reduce pollution emissions" patented technology

The invention discloses a recycling process for an alkali refining by-product, namely soapstock in refining vegetable oil and a reactor. The recycling process comprises the following steps: (1) acidizing the soapstock; (2), preparing a biodiesel through the acid oil; (3) neutralizing wastewater. According to the invention, a renewable energy source, namely the biodiesel is produced by directly acidizing the by-product, namely the soapstock produced in the vegetable oil refining process. Compared with the method of directly selling the soapstock, the recycling process has the advantages as follow: the problem that light diesel is needed to be purchased from the outside to be used as a fuel for the burning of a high-pressure steam generator in the deodorization working section of the same process is solved; secondary pollution after waste soapstock is sold is prevented; meanwhile, duo to acidified water after the soapstock is acidized, the discharge of high-alkalinity final washing water in the alkali refining working section is avoided; raw materials and water treatment cost are reduced. Therefore, the recycling process is an environment-friendly technology, and can bring more social and economic benefits.

The invention relates to dyeing equipment and method allowing dye liquor to flow inwards and outwards at the same time. In the dyeing equipment, an end socket is welded to the lower end of a cylinder body to form an airtight container, and the air container is supported and fixed through a supporting frame; a cheese creel is placed in the cylinder body and comprises a disc body and yarn rods, the disc body is hollow inside, and a plurality of yarn rods are evenly installed on the disc body; the yarn rods are hollow inside, an opening in the lower end of each yarn rod is communicated with an inner cavity of the disc body, and a plurality of small holes are formed in the wall of each yarn rod. The dyeing equipment is characterized in that the inner cavity of the disc body is divided into at least three mutually independent creel chambers through partition boards, a water access port is formed in the bottom of each creel chamber, the water access port of at least one creel chamber is connected with a water drainage port of a water pump through a periodical water flow reversing mechanism, and the water access ports of other creel chambers are connected with a water return port of the water pump through periodical water flow reversing mechanisms. According to the dyeing equipment, dye liquor conversion frequency is improved, effective circulation time is prolonged, and cost is saved.

The invention relates to a pollution discharge prediction method based on industrial user electricity consumption data. The method has the following steps: 1), obtaining industrial user electricity consumption sample data; 2), performing preprocessing on the sample data; 3), establishing a complex network representing relations between industrial users in industries according to the pre-processed data; 4), predicating the electricity quantities of the industrial users according to the complex network; 5), according to the industrial user electricity consumption sample data, establishing a quantity relation between the electricity quantities of industrial enterprises and direct pollutant discharge amounts; and 6), according to the prediction result in the step 4) and the quantity relation in the step 5), predicting the direct pollutant discharge amounts of the industrial users. Compared to the prior art, the method provided by the invention has the advantages of high accuracy, high reliability and the like.

The invention discloses a dynamic optimization control method for temperature of a heating furnace based on combustion-supporting air flow calculation and belongs to a heating furnace control technology. The opening degree and the air flow of an air regulating valve are accurately controlled according to a set air-fuel ratio and the combustion-supporting air flow calculation of the heating furnace, so that the air flow is matched with the gas flow to obtain an optimal combustion effect; and according to O2 and CO components in detected smoke gas, a combustion-supporting fan speed adjusting method is adopted to dynamically control the excessive air coefficient, and the excessive air coefficient of the heating furnace is effectively controlled. The good combustion effect and the effective excessive air coefficient control achieve the multiple effects of improving the combustion efficiency of the heating furnace, reducing the total amount of generated smoke gas, improving the energy saving amount of a fan, reducing the pollution discharge amount, reducing the oxidation burning loss of a casting blank, realizing the full-automatic control of the heating furnace, reducing the labor intensity of an operator and improving the production operation rate, and the method can be used for new, expanded or renovated steel rolling furnaces and refining-chemical heating furnaces and heating furnace systems in other industries.

The invention discloses a preparation method of a moss-proof baking-free brick. The preparation method comprises the following operation steps: (1) uniformly mixing stainless steel slag, alunite and sal ammoniac, adding the mixture into a crusher for crushing, adding treating fluid into the mixture, and uniformly mixing and stirring the mixture to obtain a base material for later use; (2) uniformly mixing the base material, cement and fly ash, adding the mixture into a cement mortar mixer, carrying out stirring, adding water, a water reducing agent and an early strength agent into the mixer, continuing stirring the materials to obtain a mixture, adding the mixture into a mold, and carrying out compression molding to obtain bricks; and (3) taking out the bricks, and curing the bricks at room temperature for 15-20 days to obtain baking-free bricks. The moss-proof baking-free brick provided by the invention has excellent mechanical properties and high strength, is not easy to break duringcarrying and transportation, especially has excellent moss-proof properties, and can effectively prevent mosses and other bryophytes from growing and propagating on the surface of the brick.

The invention discloses an asymmetric characteristic dynamic control method of a blast furnace hot blast stove and a waste gas pipe network of the blast furnace hot blast stove, and belongs to the blast furnace hot blast stove control technology. According to the operating conditions and physical characteristics of the blast furnace hot blast stove and the waste gas pipe network of the blast furnace hot blast stove, an asymmetric system theory of the blast furnace hot blast stove and the waste gas pipe network of the blast furnace hot blast stove is established, the dynamic control method based on the asymmetric system theory of the blast furnace hot blast stove and the waste gas pipe network of the blast furnace hot blast stove is developed, the argon content, the oxygen content and the CO content in flue waste gas are detected through flue gas analysis, a mathematical model is calculated according to the external air inlet amount, the external air inlet amount of the hot blast stoveis calculated, the opening degree of an inlet valve of an induced draft fan is adjusted, and the external air inlet amount is controlled within a set value range; an excess air coefficient is calculated according to an excess air coefficient calculation mathematical model, the opening degree of an air adjusting valve is adjusted by using a difference value between the calculated value and a set value, so that the excess air coefficient is kept in a set value range; and the multiple energy-saving and emission-reducing effects of improving the combustion efficiency, reducing the NOx pollution emission and achieving full-automatic control are achieved.

The invention discloses a coal-containing wastewater treatment reconstruction device for coal transportation, and belongs to the technical field of wastewater treatment. The device comprises a primarysedimentation tank for introducing raw coal mud water, the primary sedimentation tank is connected with a dosing system, a labyrinth parry is arranged in the primary sedimentation tank, overflowing sewage of the primary sedimentation tank enters a secondary sedimentation tank, effluent water of the secondary sedimentation tank enters a fiber ball filter through an elevator pump, the water outletof the fiber ball filter is connected with the water inlet of a clear water tank through a non-return valve, and effluent water of the clear water tank goes through a clear water pump and then is reused; and the clear water tank is also connected with a backwashing pump, the water outlet of the backwashing pup is connected with the backwashing water inlet of the fiber ball filter, and the backwashing water outlet of the fiber ball filter is connected with the primary sedimentation tank. The coal-containing wastewater treatment reconstruction device has the advantages of simplification of an existing treatment device, reduction of the investment cost, and stability and high efficiency in running.

The invention discloses a steel rolling heating furnace and a dynamic control method for asymmetric characteristics of a flue gas pipe network thereof, and belongs to a steel rolling heating furnace control technology. An asymmetric system theory of the steel rolling heating furnace is determined according to the operating condition characteristics of the steel rolling heating furnace and the physical characteristics of the flue gas pipe network; an external air inlet amount calculation mathematical model and an air excess coefficient calculation mathematical model of the steel rolling heatingfurnace are researched and developed; the external air inlet amount of the steel rolling heating furnace is calculated through the argon content detected by flue gas analysis; then the opening of aninlet valve of an induced draft fan is adjusted according to the difference between a set value and a calculated value of the external air inlet amount of the steel rolling heating furnace, so that the external air inlet amount is always controlled within a set value range; the air flow and the gas flow are adjusted according to the oxygen content and the carbon monoxide content detected by the flue gas analysis, so that the air excess coefficient is always controlled within the set value range; and multiple energy-saving and emission-reducing effects of improving the combustion efficiency ofthe heating furnace, reducing the NOx pollution emission and realizing full-automatic control are achieved.

The invention relates to low-nitrogen combustion fresh air and flue gas proportion regulation equipment. The equipment comprises a control unit used for a regulating the proportion of air and nitrogen, a flue gas fan used for extracting flue gas, a fresh air fan used for extracting air, a mixing pipeline connected with the flue gas fan and the fresh air fan and used for mixing the flue gas and theair, a boiler arranged at and connected with an outlet of the mixing pipeline and used for combusting fuel, and a stack connected with a boiler exhaust outlet and used for exhausting post-combustionflue gas. According to the equipment provided by the invention, by arranging the control unit in the equipment and arranging the fans for extracting the flue gas and air correspondingly, the power ofthe fans is set through the control unit so as to regulate the proportion of the glue gas and the air, meanwhile, the total amounts of oxynitrides produced under various proportion conditions can be detected and compared, accordingly, the proportion with the minimum produced oxynitride is selected, and low-nitrogen combustion efficiency can reach the maximum while the oxynitride output is lowered.

The invention provides a heating furnace hearth pressure dynamic optimization control method based on the furnace gas amount and belongs to heating furnace control technologies. According to the furnace gas amount of a heating furnace, the opening degree of an inlet valve of an induced draft fan is adjusted to be matched with the furnace gas amount, so that the excess air coefficient of the heating furnace is controlled, on this basis, the speed of the induced draft fan is detected and adjusted according to the hearth pressure, and then the hearth pressure is stably kept within a set range; bythe adoption of the control strategy, a good hearth pressure control effect and an appropriate excess air coefficient are obtained; namely, the multiple effects of improving combustion efficiency ofthe heating furnace, reducing the total amount of smoke, improving the energy saving amount of the induced draft fan, reducing the emission of pollutants, lowering iron scale loss of casting blanks, achieving full automatic control over the heating furnace, lightening the labor intensity of an operator and improving the production operation efficiency are achieved, and the multiple benefits of saving energy, reducing emission, increasing yield and guaranteeing quality are achieved. The heating furnace hearth pressure dynamic optimization control method based on the furnace gas amount can be applied to newly-constructed or expanded or transformed various steel rolling heating furnace systems and refining-chemical heating furnaces and heating furnace systems under similar working conditionsin other industries.

The invention discloses a glass melting furnace and an asymmetric characteristic dynamic control method for a flue gas pipe network of the glass melting furnace, belongs to a glass melting furnace control technology, and develops an external air inlet amount calculation mathematical model and an air excess coefficient calculation mathematical model to dynamically control the external air inlet amount and an air excess coefficient. The inlet amount of external air is calculated according to the argon content detected through flue gas analysis, and then the opening degree of an inlet valve of an induced draft fan is adjusted according to the difference between a set value and a calculated value, so that the inlet amount of the external air is always controlled within a set value range. The air flow and the fuel gas flow are adjusted according to the oxygen content and the carbon monoxide content of flue gas analyzing and detection to control the air excess coefficient, so that the air excess coefficient is always controlled within a set value range. According to the invention, multiple energy-saving and emission-reducing effects of improving the combustion efficiency, reducing the total amount of generated flue gas, improving the energy-saving amount of the induced draft fan, reducing the NOx pollution emission and realizing full-automatic control are achieved, and the method can be widely applied to newly-built, expanded and transformed glass melting furnace systems.

The invention discloses a waste incineration power generation boiler and a flue gas pipe network asymmetric characteristic dynamic control method thereof, belongs to a waste incineration power generation boiler control technology, and relates to a dynamic control method of an external air inlet amount calculation mathematical model, an air excess coefficient calculation mathematical model, an external air inlet amount and an air excess coefficient of the waste incineration power generation boiler. The external air inlet amount of the waste incineration power generation boiler is calculated through the argon content detected through flue gas analysis, and then the opening degree of an inlet valve of an induced draft fan is adjusted according to the difference between a set value and a calculated value of the external air inlet amount, so that the external air inlet amount is always controlled within a set value range. The secondary fan air volume and the primary fan air volume are adjusted according to the oxygen content and the carbon monoxide content which are analyzed and detected through the flue gas, so that the air excess coefficient is always controlled within a set value range. The multiple energy-saving and emission-reducing effects of improving the heat efficiency of the boiler, reducing NOx and VOC pollution emission and achieving full-automatic control are achieved.

The invention discloses a rotary kiln and a flue gas pipe network asymmetric characteristic dynamic control method thereof, belongs to a rotary kiln control technology, and develops a rotary kiln external air inlet amount calculation mathematical model and an air excess coefficient calculation mathematical model. The inlet amount of rotary kiln external air is calculated through the argon contentdetected by flue gas analysis. The opening degree of an inlet valve of a kiln tail exhaust fan is adjusted according to the difference between an external air inlet amount set value and an external air inlet amount calculated value, so that the external air inlet amount of the rotary kiln is always controlled within a set value range; the air volume of a secondary fan, the air volume of a tertiaryfan and the air volume of a primary fan are adjusted according to the oxygen content and the carbon monoxide content which are analyzed and detected by the flue gas to control the air excess coefficient of the rotary kiln, so that the air excess coefficient of the rotary kiln is always controlled within a set value range; the energy conservation and emission reduction effects of improving the combustion efficiency, increasing the energy-saving amount of the exhaust fan, reducing the NOx pollution discharge amount and improving the production operation rate are achieved.