3results about How to "Less water" patented technology

The utility model relates to the technical field of desulfurization and impurity removal, in particular to a slurry impurity removal device of a belt conveyor. The slurry impurity removing device of the belt conveyor comprises a driving wheel, a filtering conveying belt is arranged on the driving wheel, a discharging port is formed in the filtering conveying belt, a discharging outlet is formed in one side of the driving wheel, and a first-stage rotary washing wheel and a second-stage rotary washing wheel are arranged between the discharging port and the discharging outlet. A loosening rake is arranged between the first-stage rotary washing wheel and the second-stage rotary washing wheel, a first-stage supporting frame is arranged below the first-stage rotary washing wheel, a first-stage scraping plate is arranged on the first-stage supporting frame, a first-stage impurity removing canvas is arranged on the first-stage scraping plate, and the first-stage impurity removing canvas is in contact with the filtering conveying belt. According to the device, through the arrangement of the loosening rake, black substances attached to the interior or the bottom of gypsum are also exposed, and the impurity removal efficiency is greatly improved; and through the arrangement of a scraping plate, the working efficiency of the impurity removal canvas is improved.

The present application provides a kind of new method for identifying oil well measure effect based on production index straight line analysis, which includes: step 1, screening the bottom hole flowing pressure and oil production rate monitored in single well oil well production;Step 2, the data screened in step 1 is analyzed and processed to obtain the production index of quantitative measure effect;Step 3, the production index obtained in step 2 and the corresponding time are plotted in double logarithmic coordinate system;Step 4, the graph plotted in step 3 is linearly fitted, and the physical meaning of the inflection point of the straight line is identified in combination with oilfield site information;Step 5, the critical production index is obtained by using the straight line fitted in step 4 to identify the measure effect and the measure effective time.The new method for identifying oil well measure effect based on production index straight line analysis can effectively identify the oil well measure effect, and has the advantages of simple and fast identification, high identification rate, and is easy to popularize and use.

The invention belongs to the technical field of red mud-based materials, and particularly relates to a red mud-based water-absorbing polyvinyl chloride granular material and a preparation method thereof. The granular material is composed of the following components in parts by mass: 100 parts of polyvinyl chloride resin; 65-150 parts of red mud powder which is dealkalized, dried and crushed until the average particle size is 5-10 microns; 3-8 parts of a composite modifier containing at least one of a silane coupling agent and a titanate coupling agent; 3-8 parts of a calcium-zinc composite stabilizer; 1-4 parts of a lubricant; the composite modifier is used for modifying the surface of the red mud powder, so that the red mud powder and the polyvinyl chloride resin form an interface bonding layer. The tensile strength of the obtained granular material is greater than or equal to 25MPa, the water absorption rate is 0.94-1.83%, and the granular material has mechanical stability and adjustable water absorption, so that polyvinyl chloride is highly filled with the low-cost solid waste red mud, the performance is kept, and the bottlenecks of high calcium carbonate cost and difficult red mud utilization in the prior art are solved.