30results about How to "Large amount of disposal" patented technology

The invention discloses a sludge treatment system in a cement kiln, which is characterized by comprising a sludge drying device, a sludge incineration device, a sludge drying waste gas treatment device, a waste water treatment device, a first delivery mechanism for delivering dried sludge to the sludge incineration device, a second delivery mechanism for delivering sludge drying waste gas to the sludge drying waste gas treatment device, and a third delivery mechanism for delivering waste water generated by the sludge drying waste gas treatment device to the waste water treatment device, wherein the sludge drying device is connected with the sludge incineration device through the first delivery mechanism; the sludge drying device is connected with the sludge drying waste gas treatment device through the second delivery mechanism; and the sludge drying waste gas treatment device is connected with the waste water treatment device through the third delivery mechanism. The overall system achieves zero discharge of waste residue and waste water, and the waste gas discharge is lower than the limit value in the national discharge standard, thereby achieving the goal of converting sludge into resources and harmless substances.

The invention relates to a biodegradation-based sludge brick-making technology. Compared with a traditional technology, the biodegradation-based sludge brick-making technology is characterized in that a step of anaerobic treatment is added. Fermentation is carried out and then filter-pressing dehydration treatment is performed, so that the content of organic matters in sludge is reduced to below 10% and the content of water is reduced to 20%-30%, thereby obtaining brick-making sludge suitable for being added to a brick-making material, such as shale and the like. According to the traditional technology, the filter-pressing dehydration treatment is directly performed, so that the content of water in the sludge is only reduced to about 80% and the content of organic volatile matters is above 20%. Generally, the total added weight of the sludge, which contains 80% of water and more than 20% of organic matters and is added for making a brick, is only 30% of the weight of the brick-making material. In the brick-making sludge which is suitable for being added to the brick-making material and is obtained according to the biodegradation-based sludge brick-making technology, the content of organic matters is reduced to below 10% and the content of water is reduced to 20%-30%, and the total added weight of the sludge used for making the brick can be 40%-60% of the weight of the brick-making material, thereby saving raw materials, lowering cost and greatly promoting the capacity for treating the sludge.

The invention discloses a cement kiln capable of realizing waste gasification outside the same and a gasification method thereof. The cement kiln capable of realizing waste gasification outside the same comprises a cement kiln, wherein a gas inlet of the cement kiln is communicated with a gas outlet of a waste gasification furnace; a feed port of the waste gasification furnace is positioned below an outlet of a waste conveying device; an inlet of the waste conveying device is positioned in a waste material shed; and a waste grabbing device is arranged in the waste material shed. An operating method of the cement kiln capable of realizing waste gasification outside the same is characterized in that heat generated by burning part of waste in the waste gasification furnace is used to heat the rest of the waste in the waste gasification furnace, so that the rest of the waste can be gasified. According to the invention, the defect that domestic waste is high in water content and contains complicated components is overcome, the pretreatment procedure can be greatly simplified, the treatment cost is greatly lowered, and the domestic waste treatment scale is expanded; and furthermore, no auxiliary fuel is needed. Besides, the waste feeding uniformity can be ensured, thereby being beneficial to uniform distribution in the waste gasification furnace.

The invention provides a device for disposing waste by preheating raw materials through a rotary kiln. The device comprises a decomposing furnace, the rotary kiln, a tertiary air pipe and a minisize rotary kiln, wherein the tertiary air pipe is connected with a kiln head of the rotary kiln and the decomposing furnace, and the minisize rotary kiln and the tertiary air pipe are arranged to form an inclination angle. One end of the minisize rotary kiln communicates with the tertiary air pipe through a first pipe, and the other end of the minisize rotary kiln communicates with the decomposing furnace through a second pipe. The end, communicating with the tertiary air pipe, of the minisize rotary kiln is higher than the end, communicating with the decomposing furnace, of the minisize rotary kiln. The first pipe communicating with the tertiary air pipe is provided with a waste charging opening. The first pipe communicates with a preheater through a third pipe, and the hot raw materials in the preheater are distributed into the minisize rotary kiln through the third pipe. By means of the device, the harmless disposal process of the solid waste is achieved while cement clinker is produced;the charging amount of the waste is increased; and in addition, the problem that coking occurs in the minisize rotary kiln and the pipes to cause blockage can be avoided.

The invention discloses a device and method for regenerating a filling material by using solid waste, and belongs to the technical field of sludge solidification treatment.The device comprises a sludge pretreatment bin, the lower end of the sludge pretreatment bin is connected with a filter-pressing dehydration system through a pipeline, and the filter-pressing dehydration system is connected with a mixing and stirring system through a pipeline; and the left end of the mixing and stirring system is connected with a regenerated aggregate bin through a discharge pipe. When the device is used, the construction waste recycled aggregate is used as a framework material, the household waste incineration slag recycled micro powder is used as a cementing material, and a sludge mixing and curing process for flocculating and then curing the sludge and a matched device are adopted, so that cooperative treatment and resource utilization of the dredged sludge, the waste incineration slag recycled micro powder and the construction waste recycled aggregate can be achieved, and the solidified soil meeting the requirements of engineering filling materials is produced; and the treatment method is low in cost, short in solidification period, large in sludge treatment amount, remarkable in solidification effect and good in durability.

The invention discloses municipal sludge chain rolling suspension drying clean incineration equipment and an incineration method, and the municipal sludge chain rolling suspension drying clean incineration equipment comprises more than two stages of horizontal sludge rod chain rolling suspension drying devices, plasma flame suspension incineration devices and waste gas purification devices which are communicated in sequence.Municipal sludge chain rolling suspension drying clean incineration can be integrated, the treatment process is simple, the heat utilization efficiency is high, the energy consumption is low, operation is continuous and reliable, the sludge treatment amount is large, the occupied area is small, and the operation cost is lower. The invention further provides the incineration method, the technology that wet sludge and hot air are rolled, hung, suspended and dried in a relatively closed space through a multi-stage rod chain is utilized, moisture in the sludge can be rapidly removed, the retention time of a sludge viscous area is effectively shortened, the sludge dewatering and drying efficiency is effectively improved, and the drying heat consumption is reduced.

The invention provides a liquid hazardous waste pre-treatment and exhaust gas collection device. One end of a spray pipe of the device is connected to a reuse reclaimed water storage tank while the other end of the spray pipe is connected to a hazardous liquid waste storage tank, waste liquor in the hazardous liquid waste storage tank is sucked into the spray pipe through a first self-priming pump, reuse reclaimed water in the reuse reclaimed water storage tank is sucked into the spray pipe through a second self-priming pump, a mixing and stirring device is mounted below the spray pipe, a hopper is mounted on one side above the mixing and stirring device, a feeding device is mounted on the hopper side, an unloading device is mounted at the bottom of the mixing and stirring device, a firstvalve is mounted on the unloading device, a seal cover is mounted on the other side above the mixing and stirring device, and a gas collecting pipeline is mounted above the seal cover. The liquid hazardous waste pre-treatment and exhaust gas collection device solves the problem of feeding liquid hazardous wastes treated by way of pump spraying into a rotary kiln to incinerate. The liquid hazardouswaste pre-treatment and exhaust gas collection device which pre-treats the liquid hazardous wastes is safer and more stable by adopting liquid waste neutralizing and stirring equipment and a device of collecting harmful gas generated during stirring, so that the treatment progress of the liquid wastes is improved.

The invention discloses a rapid separation method of petroleum oil mud-water mixed liquor. The method includes the following steps that acid is added into petroleum oil mud-water mixed liquor at the room temperature to regulate the pH to be acidic, then flocculant is added, stirring is conducted for a reaction, and standing and filtering are conducted. Acidification and flocculation are adopted to achieve automatic solid-liquid separation of the petroleum oil mud-water mixed liquor, and the method has the advantages that solid-liquid separation is fast, treatment agents are cheap and easy to obtain, the disposal capacity is large, the technological process is simple, operability is high, and liquid clarity is high after treatment; besides, some waste acid can be recycled to deal with waste by waste, and thus the treatment concepts of resource conservation and energy conservation and environment protection are realized.

The invention provides a method for cooperatively treating electrolytic manganese residue by a dry method rotary kiln cement plant production line. The method comprises the steps that in the dry method rotary kiln cement plant production line which operates normally, the electrolytic manganese residue is continuously fed into a kiln tail smoke chamber of dry method rotary kiln production line equipment, meanwhile, oxidizing atmosphere calcinaiton in a rotary kiln and kiln tail draught fan breezing are controlled, and normal calcinaiton of clinkers in the kiln and the stable operation of the rotary kiln cement plant production line are maintained. The method is simple to operate, the investment in technological upgrading is small, the disposal quantity of the manganese residue is greater, no second pollution generates, resource utilization of protogenetic electrolytic manganese residue and stocked or discarded electrolytic manganese residue can be fully achieved, and the protection of asocial ecological environment and a natural environment is facilitated.

The invention provides an oxygenating device for increasing the waste treatment capacity of a rotary kiln. The device comprises a decomposition furnace, the rotary kiln, a tertiary air duct for connecting the head of the rotary kiln with the decomposition furnace, and a miniature rotary kiln arranged in parallel with the tertiary air duct, one end of the miniature rotary kiln is communicated withthe tertiary air duct through a first pipeline, the other end is communicated with the decomposition furnace through a second pipeline, and the first pipeline and/or the second pipeline are/is provided with an oxygen injection inlet; and the first pipeline, communicated with the tertiary air duct of the miniature rotary kiln is provided with a waste filling port. The device realizes the harmless treatment process of solid wastes while producing a cement clinker, improves the filling amount of the wastes, prolongs the heat exchange time, increases the treatment efficiency of the wastes, and canensure the total oxygen content of tertiary hot air of the decomposition furnace.

The invention provides an automatic crushing and slurrying process for kitchen garbage. The process is realized through an automatic kitchen garbage crushing and slurrying system. The system comprisesa first conveying mechanism, a second conveying mechanism and a kitchen garbage crushing and slurrying device, wherein the device comprises a support, a container fixing mechanism, a crushing and slurrying mechanism and a lifting mechanism, and the support comprises a horizontally-arranged support body and a vertical rail; the container fixing mechanism is arranged on the support body to fix a container, and the crushing and slurrying mechanism comprises a fixing frame, a power component and two groups of slurrying cutter shaft assemblies; the fixing frame is arranged on the support body in parallel and is in sliding connection with the rail; the two groups of pulping cutter shaft assemblies are arranged in parallel and can axially rotate relative to the fixing frame, and the power component drives the pulping cutter shaft assemblies to rotate; the lifting mechanism drives the fixing frame to move up and down to crush garbage in the container; and the first conveying mechanism and thesecond conveying mechanism are used for conveying the container. The process has the advantages of assembly line work, large treatment capacity, difficulty in winding of garbage fibers and the like.

The invention relates to a multi-point feeding system for coordinated disposal of refuse derived fuel (RDF) by a cement kiln. The multi-point feeding system comprises two or more stages of shaftless screw conveyors; an inlet of only one shaftless screw conveyor of the first stage communicates with a main pipeline, and one or more rotary wind locking valves are arranged on the main pipeline; each shaftless screw conveyor of the previous stage communicates with inlets of two or more corresponding shaftless screw conveyors of the next stage through branch pipelines; each shaftless screw conveyorof the last stage is divided into two or more ways through branch pipelines, and each way is provided with a gate plate valve and communicates with a kiln system; and inlets of the branch pipelines communicate with the shaftless screw conveyors through shell lateral openings connected into the shaftless screw conveyors. According to the multi-point feeding system, an RDF distributing function is achieved, multi-point adjusting feeding is achieved, stable operation of the kiln system is guaranteed, the disposal amount of the RDF is increased, and feeding wind locking is achieved.

The invention belongs to the technical field of solid waste treatment, and particularly relates to a synergistic solidifying method for SrF2 solid waste and high-sodium high-iron solid waste. The method includes mixing SrF2 solid waste and high-sodium high-iron solid waste, melting, forming and annealing to obtain a glass solidified body. In the high-sodium high-iron solid waste, the sum of mole percentages of the Na2O and Fe2O3 components is in the range of 58-79 mol%. The invention provides an innovative idea of combined treatment of the SrF2 solid waste and the high-sodium high-iron solid waste for the first time, and finds that the combined treatment of the SrF2 solid waste and the high-sodium high-iron solid waste can generate a synergistic effect, the solid waste treatment capacity can be improved, the chemical and thermal stability of the glass solidified body can be improved, and in addition, F can be synchronously solidified. According to the technical scheme, waste is treatedwith waste, and in addition, unexpected effects of improving the chemical and thermal stability of a solidified body, achieving F synchronous curing which is difficult to achieve in the industry andthe like can be achieved synergistically. The technical scheme provided by the invention can be applied to combined treatment of SrF2 and high-sodium high-iron radioactive solid waste.

A method for using aluminum ash as fuel, correction material and sintering aid for dry-process cement production comprises the following steps: mixing aluminum ash and a catalytic combustion accelerant in a conveying pipeline or a combustor, spraying the mixture into a kiln tail decomposing furnace and/or a kiln head rotary kiln of a dry-process cement production line through an injection pipe or the combustor, under the catalytic activation action of a catalytic combustion accelerant, the raw materials are quickly burnt out in a high-temperature environment and under a suspension condition, heat energy generated by combustion is directly supplied to decomposition of calcium carbonate and/or sintering of clinker, and activated aluminum oxide generated by combustion is directly used as an aluminum correction raw material of a raw material; halides contained in the aluminum ash, other raw materials and catalytic elements after acting directly form a sintering aid for raw material calcination and/or clinker calcination. By utilizing the method, the aluminum ash can be effectively and comprehensively utilized, so that the cost for producing original combustion materials from cement can be reduced, and hazardous wastes can be co-processed by utilizing a cement kiln to protect the ecological environment; the method is simple and convenient to operate, easy to implement and low in investment, and various aluminum ashes can be consumed in a large-scale manner.

The invention discloses an electric intelligentized sand-stone separator. A bracket is installed on a movable base, an aggregate collecting bin is installed on the bracket, an outlet of the aggregate collecting bin communicates with an inlet of an aggregate separator under the aggregate collecting bin, the aggregate separator adopts spiral blades to stir and push materials, an outlet of the aggregate separator is connected with a bucket type filter screen, a conveying belt is arranged below a filter screen body of the bucket type filter screen, and a discharging plate is arranged at the rear end of the bucket type filter screen. The electric intelligentized sand-stone separator can effectively separate out aggregate exceeding the granular composition requirement and meanwhile has the advantages of being large in processed volume, convenient and fast in granular composition selection, high in overall mobility and the like, and the requirements of a pre-mixed mortar production base for aggregate good in granular composition are greatly met. Through the electric intelligentized sand-stone separator, the separation efficiency of the aggregate, good in granular composition, of to-be-separated aggregate is improved, the large-volume processing capacity is high, the sand-stone separator is convenient, quick and safe, sand and stone are thoroughly separated in one time, and the quality of the separated aggregate is fully ensured.