68results about How to "Complete chemical reaction" patented technology

The invention relates to an isothermal self-compensating type liquid level adjusting water bath kettle which comprises a water bath kettle body, a first temperature controller for controlling the temperature of a water bath area of the water bath kettle, and a water supplementing tank, a first liquid level controller (1), a second liquid level controller (2) and a second temperature controller, wherein the water bath kettle body is arranged in the water supplementing tank, a liquid level water supplementing area (7) is arranged between the inner wall of the water supplementing tank and the outer wall of the water bath kettle body, the first liquid level controller (1) is arranged at a lower part of the water bath kettle body and is used for control water input when the liquid level of a water bath kettle water bath area (6) is too low, the second liquid level controller (2) is arranged at an upper part of the water supplementing tank and is used for control water input when the liquid level of the liquid level water supplementing area (7) is too low, and the second temperature controller is used for controlling the temperature of the liquid level water supplementing area (7) to keep consistent with the temperature of the water bath kettle water bath area (6). The isothermal self-compensating type liquid level adjusting water bath kettle can realize the function of unmanned water self-compensation (water at the same temperature).

The invention discloses a method for preparing manganese sulfate by absorbing sulfur dioxide in flue gas with manganese dioxide ore pulp, comprising the following steps: performing wet ball milling on manganese dioxide ore and grading to obtain initial ore pulp, and the particle size of the ore material in the initial ore pulp is less than 149 μm, the initial pulp is crushed by a vertical stirring mill to obtain a reaction pulp, and 90% of the particle size of the mineral material in the reaction pulp is below 50 μm; add a manganese sulfate solution containing Fe3+ and / or Fe2+ to the obtained reaction pulp, and then make the reaction pulp Absorption reaction with high-temperature flue gas containing sulfur dioxide, the reaction temperature is controlled at 90 ° C ~ 95 ° C; after the completion of the absorption reaction, the reaction product is subjected to solid-liquid separation, iron and heavy metal removal, and then concentrated and crystallized under normal pressure to obtain monohydrate Manganese sulfate. The method of the invention has the advantages of energy saving and environmental protection, high resource utilization rate, high product added value, good flue gas desulfurization effect, continuous and thorough reaction, low cost and the like.

The invention discloses a production method for barium stearate. The production method comprises the following steps: 1) adding water into a reactor and starting stirring and heating; 2) with water as a reaction dispersion medium and under the conditions of stirring and heating, adding powdery barium hydroxide at normal pressure so as to form a barium hydroxide suspension, then adding subparticle stearic acid while stirring when temperature reaches 50 to 60 DEG C, stopping heating when temperature reaches 65 to 66 DEG C and carrying out a reaction for 20 to 30 min when temperature rises to 69 to 70 DEG C caused by reaction exotherm; and 3) subjecting a reaction product to filtering separation, drying and crushing so as to obtain a barium stearate product. The production method provided by the invention realizes a complete chemical reaction of stearic acid with barium hydroxide under the reaction condition that a catalyst is not added and has low requirements on equipment; process flow is simple; the reaction medium water can be cyclically used, so no waste water is discharged, causing no pollution to the environment; reaction temperature is low, and little energy is consumed; no catalyst is needed, and production cost is reduced.