154results about How to "Reduce regeneration frequency" patented technology

In a method and apparatus for determining information concerning the presence of ingredients with oxygen demand in a liquid sample, especially for determining the chemical oxygen demand of a liquid sample, especially a water, or wastewater, sample, by means of electrochemical oxidation of ingredients of the liquid sample, oxidation of ingredients of the liquid sample occurs on a boron doped, diamond electrode.

An integrating PM amount σ PM as an integrating value of a PM generating amount after DPF regeneration is read (S1). The integrating PM amount and a first threshold value SL1 set in advance are compared, and the regenerating period of DPF 13 is judged (S2). Further, a differential pressure ΔPdf before and after DPF 13 detected by a differential pressure sensor 16, and a second threshold value SL2 are compared, and the regenerating period of DPF 13 is judged (S5). Regeneration processing of DPF 13 is then performed when the integrating PM amount σ PM attains the first threshold value SL1 or tore, or the differential pressure ΔPdf attains a second threshold value SL2 or more (S7).

The invention relates to the technical field of processing of new resource food, and in particular relates to a method for preparing inulin by using Jerusalem artichoke or chicory as a raw material. The method for preparing the inulin is high in yield, low in water consumption and low in energy consumption. The method comprises the following steps of: sequentially peeling and dicing the artichoke or the chicory as the raw material, performing continuous countercurrent extraction, adding Ca(OH)2, CO2 and active carbon to carry out one-step impurity removal and decolorization, concentrating with a nano-filtration membrane, desalting the concentrate through a strong cation and weak anion resin exchange column, and thus obtaining the high-purity inulin. According to the method, impurity removal and decolorization are completed in one step, so that material waste caused by a double-carbon method is avoided, the process is simplified, and the production efficiency is improved.

The invention discloses a catalyst system for sulfur-hydrocarbon-containing desulfurization, a sulfur-hydrocarbon-containing desulfurization method using the catalyst system and a device for implementing the method. The catalyst system comprises a desulfurization auxiliary and a monolithic catalyst, wherein the active ingredient coating of the monolithic catalyst comprises 30-90wt% of active metal and 10-70wt% of substrate; the desulfurization auxiliary comprises 5-35wt% of alumina, 5-35wt% of a silicon oxide source and 30-90wt% of oxide of at least one metal of IIB, VB and VIB families; the desulfurization auxiliary is microspheres having average grain size of 20-200 microns; the weight ratio of the desulfurization auxiliary to the active ingredient coating of the monolithic catalyst is (1-9):1. The catalyst system provided by the invention has better desulfurization activity and desulfurization stability.

The invention relates to the field of desulfurization, and particularly discloses a catalyst system for desulfurization of sulfur-containing hydrocarbon. The catalyst system is applied to a method for desulfurization of sulfur-containing hydrocarbon. The catalyst system comprises a desulfurization assistant and a monolithic catalyst, wherein the monolithic catalyst comprises a monolithic carrier and an active component coating distributed on the inner surface and/or outer surface of the carrier; with the total weight of the active component coating as the standard, the active component coating contains 30-90% by weight of active metal and 10-70% by weight of matrix, and the active metal is VIIB group metals and/or VIII group metals; with the total weight of the desulfurization assistant as the standard, the desulfurization assistant contains 5-35% by weight of aluminum oxide, 0.5-10% by weight of rare earth oxide, 5-35% by weight of monox source and 30-89.5% by weight of oxide of at least one kind of metal in IIB group, VB group and VIB group, and the desulfurization assistant is microspheres with average grain size being 20-200 microns. The catalyst system has higher desulfurization activity and desulfurization stability.

An ion adsorption module comprises a container with at least an opening into which feed water flows, and an organic porous ion exchange material having a three-dimensional reticular structure filled into the container, which has a continuous pore structure comprising macropores and mesopores, the macropores being interconnected with each other forming mesopores with an average diameter of 1-1,000 μm in the interconnected parts, has a total pore volume of 1-50 ml/g, contains uniformly distributed ion exchange groups, and has an ion exchange capacity of 0.5 mg equivalent/g or more of the porous material on a dry basis. The ion adsorption module can be extremely easily filled with the ion exchange material, and the packed layer does not move even if the layer is placed in an upward flow. The ion adsorption module and the water processing method using the ion exchange material are extremely useful.

The invention provides a desulfurization and denitration device and technology used for purifying coke oven smoke. The device comprises a smoke waste heat recovery device, a desulfurization reactor and an SCR denitration reactor in a sequential connection mode. The desulfurization reactor is provided with a first smoke inlet, a first smoke outlet and a bearing device, the SCR denitration reactor is provided with a second smoke inlet, a second smoke outlet and a bearing device, the bearing devices can move downwards, the first smoke inlet and the first smoke outlet enable the coke oven smoke to make countercurrent contact with active coke and/active carbon in the desulfurization reactor, and the second smoke inlet and the second smoke outlet enable the smoke which is subjected to desulfurization treatment to make cross-current contact with active coke and/or active carbon in the SCR denitration reactor. By the utilization of the device, the denitration efficiency reaches 80% or more, the desulfurization efficiency reaches 96% or more, the temperature in the regeneration reaction of active coke can be obviously decreased to 50 DEG C-75 DEG C, and therefore energy consumption is lowered.

The invention discloses a control method of a dish-washing machine. The single dish washing process of the dish washing machine comprises at least one working stage, each working stage comprises a water inlet stage and a washing stage, and the control method of the dish washing machine comprises the steps that the hardness value of water generated by a water softening device operating the softening function at the tail section of the water inlet stage of the current working stage is obtained; if the hardness value is smaller than a preset first hardness threshold value, it is determined that the water softening device is sufficient to generate water meeting the hardness requirement of the next working stage needing soft water washing; and the water softening device is controlled to operatethe softening function again until the next working stage needing soft water washing is finished after the water inlet stage of the current working stage is finished. In the implementation mode, thesoftening capacity of the water softening device can be effectively utilized, the regeneration frequency of the water softening device is reduced, and waste of water resources is reduced.

The invention discloses an alkylation reaction method. The alkylation reaction method is characterized in that a reaction material flow containing isoparaffin and alkene is sent to an alkylation reactor, under alkylation reaction condition, the material flow is contacted with an alkylation catalyst, the alkylation catalyst is the solid acid catalyst which is placed in the alkylation reactor as a fixed bed form, and a mode of a reaction material flow passes in and out of the alkylation reactor is periodically switched between two in and out reactor modes of up-out and down-in as well as up-in and down-out. According to the alkylation reaction method, the period life of the catalyst is effectively prolonged, regeneration frequency of the catalyst is reduced, on one hand, the alkylation reaction method is in favor of prolonging the entire life of the catalyst, and on the other hand, the energy consumption of the catalyst during a regeneration process is reduced. The method has simple operation, has no especial requirement on equipment, is suitable for the new devices, and makes simple reconstruction for the pipelines of the used device, and a control valve is added for performing the method.

A method is provided for determining fuel blend in a dual fuel mixture including a first and a second fuel in an internal combustion engine. The method includes the steps of measuring multiple engine parameters using sensors during transient cycle operation for a predetermined range of engine loads and fuel blends; using system identification of transient time series of the measurements to determine one or more relevant engine parameters; determining a model for estimation of the fuel blend based on said one or more engine parameters; using the model fur determining a current fuel blend during transient operation using current measured values of the one or more engine parameters, and using the calculated current fuel blend for controlling the amount of dual fuel mixture injected into each cylinder of the internal combustion engine. A vehicle and a computer program product using the method are also provided.

The present disclosure relates to a composition, wherein the composition is a catalyst comprising support matrix, active metal, promoter metal and halide, wherein the support matrix is additionally subjected to a modifier to obtain a modified support matrix. The catalyst in the reaction reduces the percentage coke formation and provides for an enhanced reformate yield having an increase total aromatic yield and C8 aromatic yield when compared to the known/commercially available catalyst for naphtha reforming process, and also improves the quality of reformate obtained at end of the reaction. The disclosure further relates to process of preparation of the catalyst, the catalyst of the present disclosure derived from the process described, displays lower deactivation during the reaction demonstrating increased stability and reduction in the regeneration frequency and thereby making the catalyst economically feasible.

The invention aims to provide a coagulation filtering method which can obtain coagulation filtering water in good quality with low cost. The coagulation filtering method comprises the steps of conducting coagulating by adding cation type coagulant into processed water; conducting filtering by means of a filter whose filtering materials are partially arranged as cation exchange resin which uses faintly acid cation exchange resin. When quality of filtering water from the filter exceeds the regulated value, regeneration is conducted on the faintly acid cation exchange resin.

The invention relates to a condensate polishing mixed bed cation-anion resin separation filter. The filter comprises a resin pot, a main water inlet tube, and a resin inlet tube, a first resin outlet tube, a second resin outlet tube and a third resin outlet tube which are sequentially connected with the vertical side of the resin pot from top to bottom, the main water inlet tube is branched into a top water inlet tube and a bottom water inlet tube, the top water inlet tube is connected with a backwashing water outlet tube, the top water inlet tube is connected with the vertical top of the resin pot, and the bottom water inlet tube is connected with the vertical bottom of the resin pot. The invention also relates to a control method of the filter. The method sequentially comprises the following steps: 1, introducing resins into the resin pot; 2, backwashing the introduced resins; 3, leading out anion resins; 4, leading out middle-layer resins; and 5, regenerating to lead out cation resins. In the invention, the cation resin separation rate is increased, the mixed bed running time is prolonged, the acid and alkali consumption amounts are reduced, and the wastewater discharge is reduced.

The invention provides a printing and dyeing wastewater deep treatment method and equipment. The method comprises the following steps: regulating the pH value in an adjustment tank before a Fenton reaction, and adding a catalyst at the tail end of the adjustment tank; adding hydrogen peroxide in the early stage of a Fenton reaction tank, and adding PFS in the middle-late stage of the Fenton reaction tank according to the water quality condition, and adding an alkaline liquor at the tail end of the Fenton reaction tank to adjust the pH value of effluent; adding PAC at the coagulation section ofa sedimentation tank, and adding PAM accordingly, performing a coagulation reaction, and separating mud and water at the sedimentation section of the sedimentation tank; and performing biodegradationand adsorptive filtration on the effluent of the sedimentation tank in a bio-activated carbon filter tank. The printing and dyeing wastewater deep treatment method and equipment have low cost and efficient treatment.