61results about How to "Good mercury removal effect" patented technology

The invention provides a preparation method of a copper sulphide mercury removal agent. the preparation method comprises the following steps: mixing copper sulphide powder, a powdery carrier and an inorganic binder to form a mixture; spraying an organic binder aqueous solution into the mixture and rolling to form a ball; and drying the ball. By using copper sulphide with specific grain size and granularity as a raw material, on one hand, use of a vulcanizing agent is avoided so as to thoroughly solve problems of high toxicity, unbearable smell and residual vulcanizing agent existing in the preparation process of the copper sulphide mercury removal agent; and on the other hand, it is beneficial to increase active sites so as to make the mercury removal agent show excellent mercury removal activity. By the rolling mode, the active component is uniformly dispersed onto the surface of the carrier, and it is ensured that the mercury removal agent has a proper porous structure and as large specific surface area as possible. Thus, it helps raise mercury removal precision and mercury volume of the mercury removal agent and reduce bulk density of the mercury removal agent, and service life of the mercury removal agent is prolonged. Mercury removal cost is then reduced greatly.

The invention provides a method for preparing a mercury removing agent from a waste methanol catalyst. The method comprises the following steps: (1) crushing the waste methanol catalyst and mixing the crushed catalyst with a binder, extruding the mixture into strips, drying and calcining at 350-500 DEG C for 1-8 hours to obtain a mercury removing agent precursor; and (2) putting the mercury removing agent precursor into contact with sulfur-containing waste gas for sulfidizing treatment, and drying to obtain the mercury removing agent. According to the method for preparing the mercury removing agent from the waste methanol catalyst, as the waste methanol catalyst is taken as the raw material, resources can be saved, the cost can be reduced, and aluminum in the waste methanol catalyst also can be kept functioning in binding and enhancing adsorption in the final product mercury removing agent; the existing aluminum also serves as a carrier and has an excellent dispersion effect on the CuS active component; as a result, the mercury removal performance can be improved and the mercury removing agent is enabled to have relatively high mercury capacity.

A new method and device for flue gas desulfurization and mercury removal, in which lime and fly ash are activated by low-pressure steam in a boiler to enhance the effect of desulfurization and mercury removal. Firstly, the lime or Ca(OH)2 used as the desulfurization and mercury removal absorbent is activated and mixed with the flue gas by medium and low pressure water vapor, and at the same time, part of the fly ash is circulated to the top of the reaction tower to be mixed with the flue gas by medium and low pressure water vapor; Spray water mist into the reaction tower at the lower part of the flue gas distributor, the lower flue gas temperature is conducive to improving the reactivity of SO2 and Ca(OH)2, the humidity of the flue gas is conducive to improving the utilization rate of the absorbent, and improving the desulfurization and demercuration agent. Absorption properties of mercury vapor. The flue gas enters the bag type or electric bag composite dust collector after desulfurization and mercury removal in the reaction tower, and part of the collected fly ash is transported to the reaction tower for recycling to further improve the utilization rate of the absorbent; the purified flue gas is sent into the dust collector through the induced draft fan Chimney exhaust. The operating cost of the device is low, and it can achieve high desulfurization and mercury removal effects when used in conjunction with bag filter or electric bag composite dust removal equipment.

The aim of the invention is to provide a device and a method for joint evaluation of denitration and demercuration performances of a catalyst. The device comprises pipelines I, II, III, IV, V and VII, a pressure reducing valve, a filter, a mass flowmeter, a one-way valve, a preheating mixer, an electric heating furnace, three-way ball valves I, II and III, a flue gas analyzer, a mercury analyzer, and a catalytic reactor with two gas inlet and a gas outlet. Actual conditions of a factory are simulated by production of flue gases with different ratios. The catalyst with good effects both on denitration and demercuration specific to a specific flue gas can be selected by replacing of different types of catalysts.

The invention discloses a catalyst for removing harmful gas and a preparation method and application thereof. The catalyst uses activated carbon as a carrier and metal oxides are carried by the activated carbon. The metal oxides comprise copper oxide and manganese oxide according to a molar ratio of copper oxide to manganese oxide of 3: 1 to 1: 5. The catalyst has stable activity, does not easilycause catalyst poisoning, has good formaldehyde removal and mercury removal performances and can be industrially applied on a large scale. The catalyst is prepared from easily available raw materials.The preparation method is simple and a preparation cost of the catalyst is low.