64results about How to "Reduce circulation flow" patented technology

The invention relates to the technical fields of an odor treatment device and a method thereof, in particular to a deodorization device for purifying odor in stacking bins before domestic garbage is burnt and malodorous gas containing organic sulfur and organic amine in chemical plants and a method thereof. The tower body of the deodorization device is positioned above a circulating liquid box; an inner cylinder is arranged at the lower part of the tower body; the bottom of the inner cylinder is communicated with the circulating liquid box; a first spraying device is arranged in a cavity body between the inner cylinder and the tower body; a bubbling pipe is arranged in the circulating liquid box; the upper end of the bubbling pipe is introduced into the cavity body between the inner cylinder and the tower body; a gas inlet is formed on the tower body the part of which is provided with the inner cylinder; a gas outlet is formed at the top end of the tower body; and a second spraying device is arranged in the tower body. In the deodorization method, odor is respectively subjected to chemical reaction with the atomized potassium permanganate sprayed by the first spraying device and the second spraying device and the potassium permanganate solution in the circulating liquid box. The invention solves the technical problems of low treatment efficiency, large equipment, difficult post treatment and high equipment operating cost of the traditional deodorization method.

A centrifugal blower includes a centrifugal fan having a main plate and a side plate facing each other in a direction of a rotation axis, and a casing to house the centrifugal fan. The casing has a peripheral wall extending along an outer circumferential edge of the centrifugal fan, and has a tongue portion at a position on the peripheral wall. A distance between the outer circumferential edge of the centrifugal fan and the tongue portion is smaller on the main plate side of the centrifugal fan than on the side plate side of the centrifugal fan.

The invention discloses an intelligent heat supply dynamic hydraulic balance control method. The method comprises the steps that a circulating pump in a heating station is set to be in a constant pressure difference operation mode; the number of users with heating in each unit of a building is counted, and the actual total heating area of each unit is calculated; a flow coefficient of a set unit area is selected; and the flow coefficient of the unit area and the actual total heating area of each unit are input into an upper computer, and the upper computer calculates the total flow needed by each unit. The method has the advantages that the heat supply and energy saving effects are good, the phenomenon of uneven heat supply can be avoided, the heat supply quality is improved, the operation cost is saved, and the like.

The objective of the present invention is to provide a crystallization device and a crystallization process for obtaining (meth) acrylic acid with higher purity without causing leakage of a crude solution by preventing complete clogging in a crystallization tube from occurring. The device for crystallizing (meth)acrylic acid according to the present invention is characterized in comprising a crude (meth)acrylic acid solution supply part, a crystallization tube, a heat medium supply tube, a heat medium discharge tube, a storage part of a crude (meth)acrylic acid solution passed through the crystallization tube, a tube for circulating and supplying the crude (meth)acrylic acid solution to the supply part from the storage part, and a pump for circulating and supplying the crude (meth) acrylic acid solution to the supply part from the storage part; and further comprising a pressure meter in the circulate-supply tube; wherein the device is used for carrying out dynamic crystallization in a batch manner by circulating the crude (meth)acrylic acid solution to flow the crude solution downward along the inner wall of the crystallization tube in a coating film-like state.

Disclosed are: an aqueous solution for absorbing and collecting carbon dioxide from a gas containing carbon dioxide, characterized by comprising 50-70 wt% of a secondary amine compound represented by general formula [1] and a surfactant; and a method for absorbing and collecting carbon dioxide using the aqueous solution. (In the formula, R represents a linear or branched alkyl group having 3-5 carbon atoms.)

The invention discloses method concerning the continuous carbonation decomposition of a high concentration sodium aluminate solution, which comprises the following steps: delivering a refined solution with alumina concentration between 165g / l and 190g / l, and Alpha k between 1.42 and 1.44 to a first tank of carbon decomposing tanks connected in series by a pump, introducing CO2 gas to perform continuous carbonation decomposition; controlling the temperature of the first tank between 75 DEG C and 88 DEG C in the decomposition process, controlling the decomposing speed to be even so that the decomposing reaction is performed stably in 10 to 14 hours. Due to the adoption of the invention, the alumina concentration for decomposing the refined solution is greatly increased, the content of the effective ingredient in the material of the alumina production system is increased, the effective material amount passing through the equipment per area is increased, the circulating flow of the material is reduced, the consumption of the equipment and the power is reduced and the production cost is lowered.

The invention discloses a control method of a combined type air-conditioning system with a natural cooling function. The control method of the combined type air-conditioning system with the natural cooling function is characterized in that the system comprises a compressor module, an air-cooling heat exchange module, a multifunctional liquid storage device, a liquid pump, an air treatment module and control valves, wherein the air-cooling heat exchange module is composed of a heat exchanger assembly and a cooling fan; and the control method comprises the step that the three different work modes including a compression refrigeration work mode, a compression refrigeration and natural cooling coordinated operation combined refrigeration work mode and the natural cooling work mode are achieved by operating the control valves to change the flowing path of refrigeration media. According to the control method of the combined type air-conditioning system with the natural cooling function, fuzzy control is used for adjusting the refrigeration capacity, natural cooling is used for replacing compression refrigeration in low-temperature or transition seasons, natural cold resources are efficiently utilized, the control method is particularly suitable for control over the work environments of data centers, high-performance computers, communication base stations and power electronic equipment, and the energy consumption and operating cost of the air-conditioning system are greatly reduced.

The invention relates to an ejector throttling and vapor supplementing system. The system comprises a vapor supplementing compressor, a condenser, a first ejector, a flash evaporator or an economizer, a second ejector, a vapor-liquid separator and an evaporator which form a closed circulation circuit, wherein the first ejector is connected in series between the outlet of the condenser and the inlet of the flash evaporator or the inlet of the auxiliary economizer; the ejection inlet of the first ejector is connected with the vapor outlet of the vapor-liquid separator; a second ejector is connected in series between the liquid outlet of the flash evaporator or the economizer and the inlet of the vapor-liquid separator; the ejection inlet of the second ejector is connected with the outlet of the evaporator; the outlet of the compressor is connected with the inlet of the condenser; and the vapor outlet of the vapor-liquid separator is connected with the vapor suction port of the compressor. The ejectors which have a simple structure and low cost, are not provided with moving parts and have high adaptability to the two-phase flow working condition are used for replacing a throttling device, so that the performance of the system can be integrally improved.

An external-pressure column type hollow fibre membrane assembly able to be flushed by gas features that the dedicated glass flushing part is arranged among membran fibres at bottom, and the height / diameter ratio of column, the length / diameter ratio of membrane fibre, and the filling density of membrane assembly are reasonably set up for normalizing the moving tracing of gas and water and the flowing state of two-phase stream and making the membrane assembly work in subcritical throughput region. Its advantages are high membrane throughput and less pollution to membrane.

Provided is an abatement device that reduces an amount of drainage of circulating water. The abatement device lowers an average drainage flow of circulating water to a low flow, when a ratio of a concentration of silicon dioxide within the circulating water and a concentration of hydrogen fluoride within the circulating water is greater than or equal to a predetermined value at which hydrofluorosilicic acid can be produced, and raises the average drainage flow of the circulating water to a high flow higher than the low flow, when the ratio of the concentration of silicon dioxide within the circulating water and the concentration of hydrogen fluoride within the circulating water is less than the predetermined value.

The invention relates to destructive distillation and incineration furnace for destructive distillation of oil shale and burning of shale semicoke. In order to realize full-cycle destructive distillation of small-particle oil shale and complete burning of semicoke produced by the oil shale, a collecting port is formed in the inner side of a collecting channel in the wall of a preheating chamber, an exporting port is formed in the outer side, and a supporting arch bridge is arranged at the bottom of the preheating chamber; a gas injection port is formed in the inner side of a gas channel in the wall of a destructive distillation chamber, an importing port is formed in the outer side, and a supporting arch bridge is arranged at the bottom of the destructive distillation chamber; counter-rotating ratchet wheel coke feeders are arranged in a flow guiding chamber, and a flow guiding outlet is formed in the bottom; a discharge port is formed in an incineration chamber, a fine ash hopper communicated with the incineration chamber is arranged on the outer side, primary air nozzle pipes in importing grooves are connected with a primary air channel, and an importing pipe port is formed in the primary air channel; a water-cooled furnace grate is arranged in a cooling chamber, counter-rotating ratchet wheel residue removers are arranged in an ash residue discharge port in the bottom of a discharge chamber, and a secondary air introduction port is formed in the upper part. With the adoption of the furnace, the circulation flow of hot gas is effectively reduced, the calorific value of the gas is increased, the content of nitrogen in the gas is reduced, energy is saved, and consumption is reduced.