30results about How to "Guaranteed production process" patented technology

The invention provides an ion chromatograph and a sample introduction method. The ion chromatograph includes a main body and a sample introduction needle connected to the main body. The sample introduction needle comprises a needle tube, an ultrasonic sheet arranged on the surface of the tube wall of the needle tube and a metal film arranged on the surface of the ultrasonic sheet. In a hydrogen peroxide sample introduction process, through metal film catalytic hydrogen peroxide decomposition, water and oxygen are produced. The ultrasonic sheet continuously provides ultrasonic vibration to thehydrogen peroxide to produce a solution degassing function, to remove oxygen produced by the decomposition of hydrogen peroxide and to reduce the oxygen concentration of the hydrogen peroxide to the absolute safety level and the stable test performance range of the ion chromatograph detection and thus the in the hydrogen peroxide sample introduction process, the system pipe in the ion chromatograph is not oxidized, the ion chromatograph blocking caused by oxygen in the chromatograph is prevented, the stability and sensitivity of detection are improved, and the quality of the raw materials andthe consistency of processes such as production and monitoring are guaranteed.

The invention relates to a high pure corundum castable material containing nanometer calcium carbonate and a preparation method thereof. Based on the present commonly used corundum castable material, by adding nanometer calcium carbonate powder as well as adopting efficient dispersant and suitable mixing technology, the invention prepares corundum castable material that contains nanometer calcium carbonate. The invention solves the disadvantage of low strength of the present high pure corundum castable material in low and middle temperature, more particularly, the strength in about 800 DEG C. Furthermore, the variation of the burnt cool strength of the corundum castable material containing nanometer calcium carbonate from 800 DEG C to 1600 DEG C is comparatively small, and the cool strength and hot strength are both higher than those of the corundum castable material containing cement with the same content of CaO. The corundum castable material that contains nanometer calcium carbonate and is prepared by the utility model can be widely applied to such industries fields as iron and steel, nonferrous metals, ceramics and petrochemical etc. The invention can also be applied to fireproof materials products cast, molded and burnt by a porous brick etc., which can greatly reduce the burnt temperature and save energy.

The invention discloses a production process of scorch-scented brown sugar, comprising the steps of (1) adding water to dissolve brown sugar, adding invert syrup, wherein the weight ratio of brown sugar, water and invert syrup is (20-30):(5-8):(2-3); heating for thorough dissolving for 2 hours and longer; (2) pumping blended syrup to a continuous sugar boiler for boiling, and setting temperature to 130-140 DEG C; according to the scorch-scented brown sugar produced by using the production process, the brown sugar contains suitable molasses, protein colloid, cellulose, inorganic and other substances, the substances are subjected to slow carbonyl-amine reaction with reducing sugar in the invert syrup to form strong natural soft scorch scent, the overly sweet taste is weakened, and the product has deeper color, brownish black, is free of essences and pigments and is green and healthy; the finished product has natural scorch scent, moderate sweetness, and mellow and thick taste, and the defect that brown sugar has single taste and overly sweetness is overcome; the seasonal supply problem of sugarcane is solved; the production process ensures whole year production, and equipment utilization rate is increased significantly.

The invention relates to a corundum-spinelle lithical concreting material containing nano magnesium carbonate and a preparation method. In the method, the corundum-spinelle lithical concreting material containing nano magnesium carbonate is prepared by taking the currently and commonly used corundum-spinelle lithical concreting material as the base, adding nano magnesium carbonate powder, and adopting high efficient dispersant and proper mixing technique. With the method adopted, not only the adverse impact of magnesium oxide hydration on the concreting material workability caused by adding magnesia to generate spinelle in situ is avoided, but also the dreg resistance and thermal shock resistance of the existing corundum-spinelle lithical concreting material are improved. The corundum-spinelle lithical concreting material containing nano magnesium carbonate prepared by the invention can be widely used in high temperature industries such as steel, nonferrous metal, ceramic, petrochemical and the like, and can also be used for refractory material products such as air bricks which are baked after concreting moulding.

The invention relates to calcium aluminate cement containing nanometer-sized calcium carbonate and a preparation method thereof. The preparation method of the calcium aluminate cement containing nanometer-sized calcium carbonate is based on calcium aluminate used in prior refractory material by adding nano calcium carbonate powder and alumina micropowder. The invention solves the shortcoming of low mid-temperature strength in prior calcium aluminate, and particularly greatly improves the strength around 800 DEG C. The monolithic refractory containing the combined nanometer-sized calcium carbonate has a small change in cold strength under 800 DEG C and 1600 DEG C burning, and the strength of the cold state and the hot state is greatly increased compared with that of prior ordinary monolithic refractory containing the same quantity of CaO made by combining calcium aluminate cement. The invented nanometer-sized calcium aluminate cement containing calcium carbonate can be broadly used in producing refractory material such as refractory casting material, spray material, etc., and can greatly improve mid-temperature strength of material.

The invention relates to a nano-sized composite silica brick and a production method thereof. The invention is characterized in that: raw materials and binder of the silica brick are as follows: silica granules and fine powders, waste silica brick granules, calcium carbonate nanoparticles, iron oxide nanoparticles, silicon dioxide nanoparticles, fluorite powders, lime and sulfite pulp wastes. Theproduction method is based on the existing production process of the silica brick, and introduces compound nanopowders in optimal proportions in the production process of the silica brick after high-efficiency dispersion, to produce nano-sized composite silica bricks. With the addition of nanopowders, the performance of silica brick is significantly improved, and manifested as follows: 1) the particle size fraction is more reasonable, the accumulation is compact and the texture is uniform; 2) the slurry has good plasticity and moldability and the production efficiency is improved; 3) the burning temperature is decreased to 20 DEG C, thus realizing energy conservation and discharge reduction; 4) the tridymite is superior in crystallization conversion and has low content of quartz residues;5) the number of closed pores is increased, the number of opened pores are reduced, the porosity is reduced, and the strength and refractoriness under load are increased; and 6) the final product hasgood appearance, smooth end surface and good bonding property, and the rate of qualified products is increased.

A tension drainage overlap joint ladder relates to the power transmission line maintenance tool technology field. The ladder comprises a pole and tower fixing lock regulator (6), an elevating side ladder (7), an X-type safety stay wire (8) and a manned transverse ladder (12). The ladder has advantages that the structure is simple; installation and maintenance are convenient; work efficiency is high; work intensity is small; a drainage wire is in a natural pendulous circular arc shape after being installed, is not distorted and has no hard bending portions and other defects; a pressing plate of a drainage end is connected to a bolt in a tightening-moderate mode; and a technology is good and maintenance cost is reduced.

The invention provides a system and a method for utilizing waste heat of a low-concentration combustible material in tail gas of a Slapple furnace. A Slapple activating furnace (1) is connected with a regenerative chamber (2); a flue is arranged at the tail part of the regenerative chamber (2), and a flue damper (3) is mounted in the flue; a settling chamber (5) is connected with the flue, and air distribution chambers (7) and a heat accumulator (6) for afterburning are mounted in the settling chamber (5), air distribution ports are distributed in the air distribution chamber in an array manner, and a long flue combustion chamber (8) is mounted at the rear parts of the air distribution chambers (7); the tail part of the long flue combustion chamber (8) is connected with a flue gas emission passageway, a heat exchanger (10) and a coal economizer (12) are arranged in the flue gas emission passageway sequentially; and the tail end of the flue gas emission passageway is connected with a desulfurization and dust removing device (15). According to the system and the method, low-grade waste heat is fully utilized, simultaneously, pollutant discharge is reduced, the system reliability is high, and the operation and the maintenance are simple and convenient.

The invention discloses an automatic power regulation device for a polysilicon reducing furnace, comprising a silicon chip pre-heating device, a silicon chip constant-temperature heating device and controllers thereof, wherein, the silicon chip pre-heating device is provided with a power switch, a saturation resistor, a boosting transformer and a inverted pole switch which are connected in sequence, and the silicon chip pre-heating device is connected with a silicon chip by the inverted pole switch thereof; the silicon chip constant-temperature heating device is provided with a power switch, an isolation transformer, a silicon controlled rectifier and an isolating switch which are connected in sequence, and the silicon chip constant-temperature heating device is connected with the siliconchip by the isolating switch thereof; each controller is provided with a saturation resistor control module used for controlling the primary side voltage of the boosting transformer; a switch automatic switching control module is used for controlling the switching of the pre-heating device and the constant-temperature heating device, for controlling the breakdown sequence of the silicon chip, andfor controlling the tapping position of the inverted pole switch on the secondary side of the boosting transformer, thereby controlling preheating current of the silicon chip; a control module of thesilicon controlled rectifier is used for controlling the conduction angle of the controlled silicon, thereby controlling the constant-temperature heating current of the silicon chip; and the voltage regulator adopts wave splicing for voltage regulation.