257 results about "Granular matter" patented technology

A single use sterile slit impact sampling cassette with rotatable capture tray for recovering particulate matter from ambient air, having a lid with a slit shaped air inlet, dish with an air outlet, and capture tray. The dish and lid assemble to form a sealed sample chamber, which houses the capture tray. The assembled cassette is sterile packaged with its inlet and outlet covered before use. The cassette is placed on a base for operation, which supplies the required vacuum for sampling, and rotational means for the capture tray. Air drawn into the air inlet is accelerated to a velocity that ensures impingement, or entrainment of particulate matter from the sampled air volume onto, or within the capture media. The sampled air volume is evacuated from the sample chamber through an air outlet. The cassette is then removed from the operative base, and then may be analyzed for the target contaminants.

Methods of forming at least a portion of an earth-boring tool include providing at least one insert in a mold cavity, providing particulate matter in the mold cavity, melting a metal and the hard material to form a molten composition, and casting the molten composition. Other methods include coating at least one surface of a mold cavity with a coating material having a composition differing from a composition of the mold, melting a metal and a hard material to form a molten composition, and casting the molten composition. Articles comprising at least a portion of an earth-boring tool include at least one insert and a solidified eutectic or near-eutectic composition including a metal phase and a hard material phase. Other articles include a solidified eutectic or near-eutectic composition including a metal phase and a hard material phase and a coating material in contact with the solidified eutectic or near-eutectic composition.

A particulate matter detection device 100 includes a first electrode 1 whose one surface is covered with an inter-electrode dielectric material 4; a second electrode 2 disposed on the side of the one surface of the first electrode 1, to perform the discharge of electricity by a voltage applied between the first electrode 1 and the second electrode; and a pair of measurement electrodes 5, 15 disposed on the surface of the inter-electrode dielectric material 4 so as to face each other; characteristic measurement means 3 for measuring electric characteristics between the pair of measurement electrodes 5 and 15; and particulate matter amount calculation means 13 for obtaining the amount of the particulate matter 11 collected by the surface of the inter-electrode dielectric material 4, based on the change amount of the electric characteristics.

This invention discloses a waste-sludge dewatering agent. It contains (by the weight of the water content in waste-sludge being treated) of: iron salt 1-3%; ion-dispersing agent with surface-activity 1-5%; granular matter 3-6% and the rest water 60-70%. This inventive dewatering of waste-sludge method is also a waste-sludge temperament method, comprises procedures of: adding water into said sludge, agitating for 1-3 minutes; adding iron salt and reacting, during agitating, for 2-6 minutes; adding ion-dispering agent and reacting, during agitating, for 2-8 minutes; adding granular matter and reacting, during agitating, for 2-6 minutes. This inventive method for dewatering of waste-sludge has advantages of: fast dewatering, excellent results and no reducing of organic matters during this dewatering process.

A filter is made with heat-insulating ceramic fibers, and where the filter is increased in pressure loss due to particulate matter captured after filtration of exhaust gas, gas flow is blocked, a heating element is used to heat the surface of the filter, thereby burning and removing particulate matter. The filter is of heat insulating properties, by which a heat insulating material is arranged near the particulate matter capturing face of the filter, and the heating element is incorporated between the surface of the filter and the heat insulating material. The filter can be regenerated at a higher heating efficiency in a smaller quantity of thermal energy. The heat insulating material is also used as a filter, by which the apparatus can be made more compact. A charging element is arranged upstream of the filter material, by which the filter material is increased in particulate matter capturing performance, thereby suppressing the rate of increase in the pressure loss and improving heating efficiency of particulate matter.

The present invention is directed to a system and method for continuously or substantially continuously separating particulate matter based on particle size and/or density of the matter. The system includes a separation chamber having a bottom portion disposed within a cavity of a rotatable bowl having fluid therein, preferably water. The internal cavity of the separation chamber is maintained under negative pressure such that fluid is drawn through the separation chamber at a predetermined velocity to separate the solids. Larger, dewatered and/or denser solids are directed to the cavity of the rotatable bowl and can be removed by rotation of the bowl while the smaller and/or less dense solids and fluid travel up through the separation chamber.

An apparatus, system, and method are disclosed for determining the distribution of particulate matter on a particulate filter. The apparatus, in one embodiment, determines a first distribution of particulate matter by comparing the pressure change across the particulate filter with a change in engine operating conditions. The apparatus may include an input module for receiving input corresponding to engine operating conditions and input from a differential pressure sensor and a feedback module to determine a first distribution of particulate matter. The apparatus may further include a feed forward module for determining a particulate distribution trend and a selection control module to combine the first distribution of particulate matter with the particulate distribution trend to determine a second distribution of particulate matter. The distribution may be defined as a uniform distribution factor in certain embodiments.

Methods and systems (2) are disclosed for making articles (114) by three-dimensional printing. The methods include selectively printing by jet deposition on successive layers (4) of a build material powder (10) at least one of a first binder fluid and a second binder fluid. At least one of the first and second binder fluids includes a particulate matter (16) having mean particle size diameter which is less than that of the build material powder (10). The first binder fluid is characteristically different from the second binder fluid. The particulate matter (16) selectively deposited with a binder fluid can be used to locally tailor the physical properties of the article (114), e.g. by alloying with the build material powder, increasing densification, acting as a local infiltrant or infiltrant stop during heat treatment, locally modulating the local stress fields (e.g. by a mismatch of thermal coefficients of expansion), etc. Among the possible locally tailored properties is the surface finish of an interior or exterior surface of the article (114).

In a steam cooker, for heating of a food which is a mass of granular matters or linear matters such as rice or chow mein, a steam superheater is not turned on or is turned on with a very weak electric power so that steam supplied from steam supply pipes (94A to 94C) is substantially not superheated. Steam of 80° C. to 90° C. derived from the steam supply pipe (94B) is jetted out right downward from an opening (111a) of a steam jet pipe (111). Then, steam located around an end portion of the steam jet pipe (111) in a tray-shaped case (51) is pulled in by steam jetted out from the opening (111a), so that a large amount of steam is jetted against a bowl of rice or a dish of chow mein. As a result, surfaces of, for example, rice grains are prevented from immediately going beyond 100° C., so that condensation at the surfaces of the rice grains is efficiently achieved, and supply of condensed latent heat and penetration of condensed water (hot water) to the rice grains is efficiently achieved.

A method and apparatus for measuring size distribution of bulk matter consisted of randomly orientated granules, such as wood chips, make use of scanning the exposed surface of the granular matter to generate three-dimensional profile image data defined with respect to a three-coordinate reference system, The image data is segmented to reveal regions associated with distinct granules, and values of the size-related parameter for the revealed regions are estimated. Then, a geometric correction to each ones of estimated size-related parameter values is applied, to compensate for the random orientation of corresponding distinct granules. Finally, the size distribution of bulk matter is statistically estimated from the corrected size-related parameter values.

In a method of separating unwanted fine matter from heavier granular matter a flow of the material is produced under vacuum firstly through alternating expansion and contraction passages and then against impact surfaces to cause multiple redirections of the material and separation of the heavier granular material from the material flow.

A particulate filtration system for removing particulates suspended in a fluid include, in an exemplary embodiment, a filter element and a pre-collector body component operably connected to the filter element. The pre-collector body component is capable of receiving an electrical charge to attract and remove particles suspended in the fluid.

The invention relates to an integrated air-lift loop dynamic membrane bioreactor, which is characterized in that the bioreactor is in a cylindrical platform shape, and the structure of the bioreactor is divided into an anaerobic regulating pool, an anoxia tank, an air-lift loop dynamic membrane bioreactor and other units; the anaerobic regulating pool has the functions of water quality and quantity regulation, anaerobic hydrolytic acidification of inlet water and sludge volume reduction, and the main body adopts a nitrogen and carbon removal operation mode by the A/O process; the air-lift loop dynamic membrane bioreactor is an air-lift loop aerobic bioreactor in which air at two sides lifts and air at the center reflows, and filter components are is arranged in a central region; and diatomaceous earth and other granular matters are added to form granular sludge so as to form the air-lift loop dynamic membrane bioreactor; and an air lifter is adopted to lift sewage and sludge, and has different functions of isolating oil and scum, exhausting and preventing a great deal of sludge at the bottom from being greatly lifted, and the like. The invention facilitates on-site installation and operation management, has good water inlet quality, stable operation and low cost, and can fully meet the actual requirements of decentralized wastewater treatment in rural areas.

The invention discloses a process for treating tar product wastewater, which can improve the ratio of BOD/COD of the wastewater, reduce the concentration of ammonia thereof and the concentration of volatile phenol, and further lead the wastewater to be recycled or discharged without pollution. The process for treating the tar product wastewater is characterized in that: a. the wastewater which is generated by cleaning is conducted into a primary settling tank to be settled so as to remove the settled impurities; b. the wastewater is conducted into a wastewater circulating pool so as to remove big granular matters, partial suspended matters and partial oil, and reduce the content of COD; c. the wastewater is conducted into a coagulating air floating machine so as to remove the oil, slag, ammonia and nitrogen; d. the wastewater is conducted into an intermediate settling tank to settle the impurities of the coagulating air floating tank and simultaneously regulate the water quality; e. the wastewater is conducted into a hydrolytic acidification tank and the function of an anaerobe is utilized so as to degrade the refractory organic matters with big particles and molecules into biodegradable organic matters with small molecules; f. the wastewater is conducted into a contact oxidation tank, and under the contact oxidation action of aerobic bacteria, through aeration, the organic matters in the wastewater are absorbed and degraded by the aerobic bacteria; and g. the wastewater is recycled or discharged after reaching the standards after being settled by the inclined settling tank and treated by the post-treatment process.