48results about "Working-up peat" patented technology

A control system for controlling the utilization of heated waste streams for fluidizing particulate matter such as coal in a fluidizing bed dryer. The control system includes a number of graphic user interfaces that allow an operator to more easily monitor and/or control the various regulator devices. The control system controls coal handling or transportation, fluid handling or flow, and the discharge of discarded or separated coal from the dryer.

The invention discloses a microwave drying and upgrading method of lignite or coal slime. The method is characterized in that coal is preheated and performs thermal dehydration treatment before drying and the waste heat generated by coal in the drying process is utilized to perform the hot press moulding of coal. By adopting the method of the invention to perform the drying and upgrading of lignite or coal slime, the effects of reducing the energy consumption and increasing the quality and the cost of microwave drying can be further reduced; and the method is a brand-new drying and upgrading method of lignite or coal slime.

The invention discloses a coal slime forming machine and relates to the technical field of coal treatment technology. The forming machine comprises a power mechanism, a feeding and forming mechanism and a conveying and drying mechanism. The power mechanism comprises a lifting rod moving vertically; the feeding and forming mechanism comprises a feeding tube, and a forming pressure applying die and a forming pressure bearing die which match with each other vertically and mutually; the forming pressure applying die is connected to the bottom of the lifting rod; the conveying and drying mechanism is located at the bottom of the forming pressure bearing die, the conveying belt of the conveying and drying mechanism is provided with a puncture device and a drying device sequentially in the conveying direction of the conveying belt, and the tail of the conveying and drying mechanism is provided with a material collection device. The forming machine is reasonable in structure, the machining efficiency is high, and the automation level is high.

The invention provides methods to efficiently reduce the water concentration of raw solid fuels, including low rank coals such as brown coal, lignite, subbituminous coal, and other carbonaceous solids. Efficiently drying these materials at low temperatures significantly reduces greenhouse gas emissions and allows the production of low-rank coals for gasification and liquifaction.

The invention discloses a method for preparing a biomass type coal adhesive from boghead coal and co-producing biomass type coal and an organic fertilizer, which comprises the following steps of: crushing boghead coal, adding alkaline liquor to boil, keeping the temperature, standing, and taking supernate as the biomass type coal adhesive; mixing corn straws, coal gangue with soft coal after crushing, adding the biomass type coal adhesive, solid sulphur and a waterproof agent, after uniformly mixing the biomass type coal adhesive, the solid sulphur and the waterproof agent with water, and extruding, forming and drying through a forming machine to obtain biomass type coal; and filtering biomass type coal adhesive preparation residues, adjusting pH, adding cow dung to ferment, and dosing, pelleting and drying to obtain the organic fertilizer. According to the invention, the abundant boghead coal resource in inner Mongolia is utilized for developing cheap adhesive; the biomass type coal, which has the advantages of being low in cost, high in sulphur content, moisture-proof and water-resistant and is applicable to an industrial furnace, is developed by utilizing abundant coal gangue resource and corn straw resource; and residues after preparing the biomass type coal adhesive from boghead coal are used for preparing the organic fertilizer, and therefore, the method disclosed by the invention is capable of saving energy, reducing emission, reducing the production cost of the biomass type coal, and increasing the additional value of boghead coal and the utilization rate of coal gangue.

The invention relates to a method for preparing and transmitting coal slurry. At present, high pressure piston pumps are adopted for pumping mostly, which has very high requirement on the bearing pressure of equipment and requires quite high operation and maintenance costs. The method is characterized in that: the coal slurry which comes out from a coal washery is broken, removed of impurities and then stirred, black liquor and limestone particles are added during stirring to form coal mud, and then industrial water is added and stirring is continued. The coal mud is transmitted to a boiler and then to a plurality of feeding inlets arranged in the middle part of the boiler by adopting a plurality of low pressure pumps, with the coal slurry flow at each feeding inlet ranging from 5 tons to 7 tons per hour. Pretreatment is carried out on the coal slurry in the method so that the water content of the coal slurry meets the requirement for being suitable to transmission through the pumps; and feeding at the middle part with multiple points is adopted, thus realizing the transmission of the coal slurry at low pressure and low energy consumption, and further being beneficial to the stable burning of the coal slurry in the boiler.

The present invention refers to 3D rotational X-ray imaging systems for use in computed tomography (CT) and a fast, accurate and mathematically robust calibration method for determining the effective center of rotation (I) in not perfectly isocentric 3D rotational C-arm systems and eliminating substantially circular ring artifacts (RA) which arise when using such a CT scanner system. For this purpose, a C-arm based rotational CT scanner comprising at least one radiation detector (D) having an X-radiation sensitive surface exposed to an X-ray beam emitted by at least one X-ray tube (S), each rotating along a non-ideal circular trajectory (TF, TCD) about an object of interest to be three-dimensionally reconstructed from a set of 2D projection images is used for providing geometrical calibration data by scanning a calibration phantom from a plurality of distinct projection directions and calculating, for each projection direction, the 3D positions of the X-ray tube's focal spot and the X-ray detector's center. For approximating the exact 3D position and angular direction of the axis of rotation about which the at least one X-ray tube and the at least one radiation detector rotate, a circular regression technique using a number of mathematically robust least squares fits is applied.

The invention relates to the processing field of billet making from coal, in particular to a high efficient device for making billet from coal slime and an application method thereof. The high efficient device for making billet from coal slime comprises a billet making box, a cylindrical cavity is arranged in the inner part of the billet making box, the cavity is internally and rotatably connectedwith a rotating roller, the rotating roller is driven to rotate around a central axis of the cavity in the cavity through a driving mechanism, eight mold grooves are arranged on the roller surface ofthe rotating roller along the circumferential direction at equal intervals and used for making the coal billet, a groove is arranged on the position which is on the rotating roller and corresponds the mold grooves, the groove is provided with counterweight blocks for extruding and discharging the coal billet, the upper and lower side walls of the billet making box are respectively provided with feeding and discharging ports, the feeding port of the billet making box is connected with the discharging end of a screw feeder, the feeding port and the discharging port communicate with the mold grooves in a involution manner, a conveying belt for conveying the formed coal billet is arranged directly below the discharging port, and the conveying belt is connected with the driving mechanism. According to the high efficient device for making the billet from the coal slime and the application method thereof, the device is compact in structure, time-saving and labor-saving, free of impact damageto the mold grooves, and long in service life.

The invention discloses a peat brick manufacture method, which comprises the following processing steps of: (1) shale is crashed into shale powder by a rock breaker; (2) peat and water are blended and stirred into a peat slurry; (3) the shale power obtained in the step (1) and the peat slurry obtained in the step (2) are blended and stirred to peat brick raw material; (4) the peat brick raw material is poured into a mould to be molded, dried, and baked to obtain the peat brick. The peat brick manufacture method has the advantages that the raw material is more uniformly stirred; the quality of the finished goods of the brick is increased; the finished brick has the clear outline, can reach the hardness standard of number 200 brick; the method makes waste profitable, reduces the cost and the pollution.

The invention relates to a method for recovering refined coal from coal slime, in particular to a grading method for recovering the refined coal from the coal slime. The method has the technical key points that by using a spiral classifier and the principle that 'sedimentation velocity in the liquid is different due to different particle sizes and specific gravities' of solid particles, the method realizes the separation between relatively high ash component and relatively low ash component by gravity classification; and 25-35% of plus sieve low ash refined coal with larger particle size can be recovered from the relatively high ash component, and 30-40% of minus sieve high ash coal slime with smaller particle size can be removed from the relatively low ash component. Through twice classification, the aim of 'removing the relatively high ash component in the coal slime' can be achieved. The embodiment of the invention can be used for recovering the refined coal from the coal slime, thus achieving the aim of reducing the ash content of the refined coal and meeting the demand of the user.

The invention relates to a multi-purpose flammable honeycomb briquette forming block, in particular to a high-efficiency, energy-saving and environmental protection flammable honeycomb briquette forming block for two-dimensional compact array and three-dimensional stack use, and larger-scale combustion operation. The multiple-purpose flammable honeycomb briquette forming block is set out to two aspects of combustion component and outline structure, overall improves the combustion performance of the honeycomb briquette, creates a novel honeycomb briquette forming block, and is characterized by easy combustion, light weight, high efficiency, environmental protection and the like. In addition, the multiple-purpose flammable honeycomb briquette forming block has the advantages of simple material drawing, convenient preparation, low manufacturing cost, wide application scope and market application prospects, and higher economic practical value.

The invention relates to a process of manufacturing a growing medium from an initial material which is a by-product of a composting process and comprises a mixture of oversize biodegradable material and contaminants. The process comprises: removing contaminant objects from the initial material; removing mineral contaminants from the initial material; and subsequently defibrating the remaining material to produce a growing medium.

A process control method for the on-line operation in real time of a low-rank-coal pyrolysis process producing a coal-char product, a pyrolysis gas, and a complex multi-component coal-tar-oil. The control method is based on measuring the concentration of selected compounds in the three products, a solid phase, a gas phase and a liquid phase condensed from the gas-phase, using a combination of spectrometric technology including scanning in the infrared, visible, ultraviolet and microwave spectral regions, and analyzing the data based on application of a modified Chi-Square data manipulation fitting technique developed for the specific products and process. This process control method provides a basis for accurate on-line control of the process operating parameters and allows optimization of the coal-char quality as well as the quality and yield of the extracted coal-tar-oil with unique chemical composition derived from low-rank coal in a pyrolysis process. The subject invention is based on the selection of 2-6 key compounds contained in each product to be measured and used as control point, calibration of the process operating conditions to the key compound composition and monitoring the changes in concentration on-line in real time.

The invention discloses a peat drying and dewatering device capable of adjusting the treatment mode according to the water content. The device comprises a material distributing and detecting mechanism, the material distributing and detecting mechanism comprises a tank body, a vertically-through feeding cavity is formed in the tank body, a pressure sensor is arranged on the inner wall of the feeding cavity, and a valve is arranged in the feeding cavity; according to the peat drying and dewatering device capable of adjusting the treatment mode according to the water content, peat with different water contents can be classified, the classification process is automatic, compared with manual classification, the efficiency is greatly improved, the labor intensity of workers is relieved, and when the peat entering the tank body is in the high water content state, the diversion guide device guides the peat into the extrusion treatment equipment for extrusion treatment, and when the water content of the peat is low, the diversion guide device guides the peat into the hot air drying equipment for treatment, so that unnecessary heat treatment is avoided, the heat treatment time of the high-humidity peat is greatly shortened, the energy consumption is greatly reduced, and the enterprise cost is reduced.

The invention discloses a formula of a novel peat brick. The peat brick is prepared by the following raw materials in parts by weight: 25-30 parts of moulded tailing slime, and 75-70 parts of gangue powder; physical and chemical indices of the moulded tailing slime are as follows: calorific value is 280-320 kilocalorie, and the water content is 12.5-13.5%; the physical and chemical indices of the gangue are as follows: particle size is 1-2.5mm. The formula has the beneficial effects that the coal is directly washed, byproducts are used as raw materials for brickmaking, other auxiliary materials are not added, waste is changed into valuables, environment pollution is reduced, and production cost is reduced.

An improved process for the production of smokeless (low CO₂—CO emitting) boiler fuels which have been obtained by careful temperature control and the addition of waste, trash or other carbonaceous material during carbonization of various coal materials such as tar sands, bituminous coal, peat lignite, and oil shale.

The present invention relates to a method for manufacturing a biofuel from a vegetable-based biomaterial by performing the manufacture in an integrated manner, in such a way that the biomaterial is made finer and dried with the aid of heat brought from a heat-releasing process, when the drying is finally performed after the finer making stage, optionally in such a way that drying is started already in connection with finer making. The invention also relates to a biofuel manufactured in this manner and the use of the fuel in question.

The invention discloses a coal slime blank production mold. The mold comprises a box mold body provided with an upper opening, and is structurally characterized in that a blind hole is formed in the side wall of the box mold body; an air injection nozzle is arranged in the blind hole; the air injection nozzle is connected with an air injection pipe arranged on the outer side of the box mold body;a core mold body of a closed honeycomb structure is placed in the box mold body, and a plurality of tubular films melting and contracting at high temperature communicate with one another to form the core mold body; and the core mold body is provided with an air inlet which is connected with the air injection nozzle and injects combustion-supporting oxygen into the core mould body. Compared with the prior art, the coal slime blank production mold has the beneficial effects that the design is reasonable, the structure is simple, a coal slime blank capable of increasing the combustion efficiencycan be directly and quickly produced, and the operation is simple and convenient.