30results about How to "Small load change" patented technology

A mobile crusher (2) is provided that can be displaced on four caterpillars and that includes a supporting frame (20), a large hopper (31), an apron conveyor (32), a sizer (34) and an intermediate conveyor (36) for use in strip-mining. The material is received by the shovel (1) of a shovel excavator or a wheel loader, is fed to the crusher (2), crushed and is then transferred onto a conveyor plant via a discharge conveyor system. The crusher (2) has to follow at the same cycle in which the shovel excavator moves forward during an advance in mining. In order to obtain a good maneuverability of the crusher (2), the two front caterpillars (22) are driven and can be steered like a two-caterpillar chassis. As the crusher (2) is subject to high loads, all components have to have a robust design. For this purpose, the individual functional groups are accommodated in a stable supporting frame (20). The crushed material is transferred onto a subsequent bench conveyor via an evolving conveyor directly connected to the mobile crusher (2), a transfer conveyor or a mobile bridge. The plant can be displaced while under full useful load.

The cloud computing resource allocation method supporting emergencies of the present invention includes: a). Obtaining user resource application information including user priority, resource demand urgency, resource application quantity and configuration; b). Calculating user resources Assign priority; c). Obtain the resource information of the available physical server; d). Calculate the resource utilization rate of the physical server; e). Establish a virtual machine with the best performance matching, the shortest provisioning time of the virtual machine, and the smallest change in the overall load of the platform Objective function and constraints; f). Establish a mapping relationship between virtual machine requests and physical servers; g). Perform resource allocation. The cloud computing resource allocation method of the present invention uses a multi-objective optimization algorithm to obtain a set of solutions through the established multi-objective functions and constraints, and selects a solution as a mapping scheme to realize the optimal deployment of virtual machines. At the same time, the allocation method has the function of supporting emergencies, and emergency users can be allocated first.

The invention relates to a method for producing an olefin. In the method, a reaction feedstock stream is formed that contains at least one paraffin, oxygen and water, and a part of the paraffin and ofthe oxygen is converted into the olefin in the reaction feedstock stream, wherein a process gas is obtained through oxidative dehydrogenation using a catalyst, the process gas contains at least the non-converted part of the paraffin and of the oxygen, the olefin and the water from the reaction feedstock stream. According to the invention, at least one characteristic value is determined that displays an activity of the catalyst, and an amount of water in the reaction feedstock stream is set based on the at least one determined characteristic value. The invention also relates to a correspondingplant (100).

The invention discloses a method and system for hydrogenation treatment of residual oil in a fixed bed which can be rotated. In this method, the first hydrogenation pretreatment reactor is connected in series with the second hydrogenation pretreatment reactor as an online hydrogenation pretreatment reactor, when the pressure drop in the first hydrogenation pretreatment reactor rises to the pressure drop design upper limit Or when the catalyst activity is lower than the requirement, cut out the first hydrogenation pretreatment reactor and as off-line hydrogenation pretreatment reactor, then press the second hydrogenation pretreatment reactor and the third hydrogenation pretreatment reactor in parallel, The third hydrogenation pretreatment reactor is connected in parallel with the first hydrogenation pretreatment reactor, and the sequence of the first hydrogenation pretreatment reactor and the second hydrogenation pretreatment reactor being connected in series is switched, thereby realizing that there are two hydrogenation pretreatment reactors The treatment reactors are online at the same time, and through multiple cycle rotations, uninterrupted hydrogenation pretreatment reactions can be realized. The method can improve the utilization efficiency of the main catalyst and the stability of the device operation, and greatly prolong the operation time of the hydrogenation reactor.

The invention belongs to the technical field of mechanical production and manufacturing, and particularly relates to a novel four-freedom degree parallel machine tool, and solves the problems that theswinging angles of a conventional numerically-controlled machine tool and an existing parallel / series parallel machine tool cutter are limited, and during processing long and thin integral structuralmembers or processing curved surface type workpieces of which the removing capacity is high, the flexibility is poor, and the rigidity and the precision are low. The novel four-freedom degree parallel machine tool comprises a long and straight guide rail of a machine tool and a parallel processing module, wherein the parallel processing module forms a space parallel closed loop mechanism; and through four input driving, two-dimensional moving of a moving platform in the YZ plane of a machine tool coordinate system and two-dimensional rotating of a rotating shaft in an upper plane of the moving platform of the machine tool are realized by the parallel processing module, so that four-freedom degree movement of the moving platform of the parallel processing module is realized. The novel four-freedom degree parallel machine tool disclosed by the invention has the advantages of being simple in structure, large in working space, high in rigidity precision, good in dynamic performance, highin reconfigurability and the like; and the moving platform is good in flexibility, and driving load in Y-axis direction is small in changes.

The invention discloses a method and system for hydrogenation treatment of residual oil in a fixed bed which can be rotated. In the method, a hydroprocessing reaction zone, a hydroprocessing reaction zone and a catalytic cracking reaction zone are included; the hydroprocessing reaction zone includes first, second and third hydroprocessing reactors; the first, The second hydrogenation pretreatment reactor is connected in series as an online hydrogenation pretreatment reactor. When the pressure drop in the first hydrogenation pretreatment reactor rises to the design upper limit of the pressure drop or the catalyst activity is lower than the requirement, the first hydrogenation pretreatment reactor is cut off. Hydrogen pretreatment reactors, and then switch in the order of the second and third hydrogenation pretreatment reactors in parallel; the third and first hydrogenation pretreatment reactors in parallel; the first and second hydrogenation pretreatment reactors in series . The method can realize long running time without stoppage, and ensure reasonable and limited number of rotations, improve the utilization efficiency of the hydrotreating main catalyst and the stability of device operation, and greatly prolong the running time and work efficiency of the hydrotreating reactor.