47results about How to "Achieve uninterrupted production" patented technology

The invention discloses a method for preparing large-grain magnesium hydroxide by taking highly acid ammonium salt as a crystal control agent. In the method, magnesium chloride is used as a raw material to prepare the magnesium hydroxide, 1 to 4 mol / L solution of magnesium chloride is prepared and added with a small amount of highly acid ammonium salt serving as the crystal control agent and ammonia water at a certain concentration serving as a precipitator to prepare the large-grain magnesium hydroxide. The reaction process can be performed continuously or discontinuously. The magnesium hydroxide with granularity of 10 to 40 microns and purity of 98 to 99.5 percent can be obtained. The product ammonium salt is used for preparing the ammonia water by a lime milk ammonia evaporation process and is recycled. The method has the advantages of large granularity and high purity of products, multiple specifications, low cost, no environmental pollution and easy industrialization.

The invention provides a method for directly synthesizing phenyl carbamate with aniline and urea. The method includes: 1), mixing a product generated from reaction of the urea and the aniline with methyl alcohol to form a reaction mixture; 2), mixing the reaction mixture with an organic solvent to form a reaction system; 3), under protection of inert gases, controlling pressure to be MPa, heating the reaction system to be 120-210DEG C and sustaining for 10-300 minutes to obtain a crude product of the phenyl carbamate; 4), performing separation on the crude product of the phenyl carbamate to obtain the phenyl carbamate. With the method, synthesizing process can be performed continuously, uninterrupted production is realized, and industrialized promotion is facilitated.

The invention discloses a single-bucket serial-bucket charging method applied to bell-free blast furnaces. The method comprises: taking a material-receiving hopper and one failure-free charging bucket as an upper charging bucket and a lower charging bucket connected in series; adding a car of material to the upper charging bucket first in a charging process and discharging the material through the lower charging bucket; putting the material in the upper charging bucket into the lower charging bucket and putting a car of material into the lower charging bucket at a normal charging speed through a hoist skip car at the same time; putting two cars of material in the lower charging bucket into a blast furnace under the control of a blast furnace control computer so as to finish the process ofcharging the blast furnace; and repeating the steps. Therefore, when a certain charging-bucket equipment system breaks down, a single normal charging bucket can still be utilized to continue production so as to prevent the blast furnace from damping down, ensure that the blast furnace can continue to produce and meet requirements for charging capacity and charging speed.

The invention relates to a non-stop paper feeding device. The non-stop paper feeding device comprises a machine frame and discharge shafts, wherein the machine frame is also provided a feed guiding device; the feed guiding device comprises a frame and feed rolls; a driving roll is arranged on the frame; a driving motor is connected to the driving roll; a fixed plate is arranged in the frame; adhesive layers for sticking paper are arranged on the fixed plate; and a cutting assembly is arranged on the frame. The non-stop paper feeding device has the advantages that the driving roll is controlled by the driving motor to rotate; the feed rolls are driven by the driving roll to rotate; the discharge shafts are driven by the feed rolls to rotate to realize paper feeding operation; the two discharge shafts are controlled to rotate through the switch of rotating directions of the driving motor; and compared with a conventional paper feeding device, the non-stop paper feeding device has the advantage that non-stop production can be realized, so that the production efficiency is improved. The paper is fixed on the fixed plate through the adhesive layers, and then the paper is cut by the cutting assembly, so that extra or irregular regions on the paper can be rapidly removed; and through the arrangement of the adhesive layers, the cutting efficiency can be improved, and the cutting assembly can be prevented from being damaged.