34results about How to "For the purpose of energy saving and emission reduction" patented technology

The invention relates to a turbocharger test device, in particular to a test stand used for testing self-circulation performance of double turbochargers and provided with a high-pressure gas shunt device. The test stand is characterized in that the gas shunt device is arranged at an outlet end of a gas compressor of a high-flow main turbocharger on a main test stand rack and shunts high-pressure gas compressed by the gas compressor into two pipelines, and gas in one pipeline returns to a main test stand rack combustion chamber through a main turbocharge self-circulation communication valve; gas in the other pipeline passes an auxiliary test stand rack access control valve and drives a low-flow auxiliary turbocharger through an auxiliary test stand rack combustion chamber, and the auxiliary test stand access control valve is switched off after the low-flow auxiliary turbocharger operates stably. According to the test stand, performance testing in an actual state can be simulated really, tests of two different types of turbochargers can be met simultaneously, and the test stand is applied to various operating conditions for test. Besides, the test stand is simple in mechanical structure and easy to adjust, realizes energy conservation and emission reduction, reduces cost and improves the test efficiency.

The invention discloses a device for neutralization and concentration in the production of monoammonium phosphate and a method for using it. Specifically, the bottom of the reactor is connected with a steam heat exchanger through a circulation pump, the steam heat exchanger is connected with a tubular reactor, and the tubular reactor undergoes reaction The slurry circulation pipe is connected to the top of the reactor; the upper part of the reactor is provided with a feeding pipe for raffinate; the middle part of the reactor is connected to the high-pressure pump through the slurry-to-high-pressure pump delivery pipe and then sent to the powder spraying tower. Neutralize raffinate or concentrated phosphoric acid with ammonia gas to obtain monoammonium phosphate slurry that meets the powder spraying index, and then use a high-pressure pump to transport it to the powder spraying tower to obtain monoammonium phosphate products. Solve the technical problem that when using raffinate acid to produce monoammonium phosphate products by slurry method, because the acid concentration of raffinate acid is too high, the acid concentration needs to be reduced before subsequent production can be carried out, which can save the time for producing monoammonium phosphate products by slurry method According to the current raffinate consumption, the steam consumption for slurry concentration can save 43,200 tons of steam per year, and the direct economic benefit of saving steam consumption is 7.78 million yuan.

The invention discloses a totally chlorine-free bleaching method of bamboo pulp for producing Daqian writing and painting paper and aims to solve problem that the bamboo pulp for producing Daqian writing and painting paper in the prior art is subjected to two-stage hypochlorite bleaching, centralized pulping allows for centralized treatment of wastewater which can meet the existing emission standard of China, and still the wastewater contains dioxin and furan compounds which are discharged into the environment with the wastewater so as to badly influence the environment. The totally chlorine-free bleaching method includes the steps of oxygen delignification bleaching, peracid bleaching, and sodium hydrosulfite bleaching. By bleaching the bamboo pulp for producing the Daqian writing and painting paper, yield and strength of fiber can be guaranteed, pollution load caused by bleaching effluent can be reduced greatly, subsequent treatment is facilitated, and energy conservation and emission reduction are achieved. The pulp produced by the totally chlorine-free bleaching method can fully meet the production requirements of Daqian writing and painting paper, and advantages for sustainable development of Daqian writing and painting paper are created.

The invention relates to a method for producing propylene glycol mono-methyl ether with energy conservation, which comprises the following steps: mixing propylene epoxide, methanol and a catalyst (sodium methoxide or potassium methoxide) in a preset ratio in a static mixer; preheating to a set temperature with vapor generated by absorbing reaction heat in a preheater; heating with foreign vapor with the temperature higher than 160DEG C in a heater for pre-reaction; continuously reacting materials in a tube pass of a pressureproof tube type heat exchanger; vaporizing hot water in a shell pass with surplus heat released in the reaction; and performing the subsequent routine refining process of separation and purification on materials on the outlet of the tube pass of the tube type heat exchanger to produce the propylene glycol mono-methyl ether. The method can timely remove heat released in etherification, the heat is converted to a heat source for preheating the raw materials, and the method can produce the propylene glycol mono-methyl ether with energy conservation. The heat exchange makes the temperature rise in the reaction controlled in a narrow range, so the selectivity of generated 1-methoxy-2-propanol can be improved and the quality of the product is improved.

The invention belongs to the technical field of concrete, and specifically relates to an electrochromic concrete brick and its production process and manufacturing equipment. Composition of powder materials; the present invention can be used not only in cooperation with sound and light, but also in the conversion of civil air defense color systems, fire escape guidance and warning signs, and can also be applied to ground or wall decoration and the establishment of color systems, such as through cool and warm color systems The transformation of the air conditioner gives people a sense of comfort, reduces the use of air conditioners, and achieves the purpose of energy saving and emission reduction.

The invention discloses a central air-conditioner air-out system which is applied to a service hall. The central air-conditioner air-out system comprises an air-conditioner air-out device which is communicated with a central air-conditioner, the air-out device is a chair, interiors of front legs, seat surface and back of the chair are hollow cavities, a plurality of air holes are formed in the front legs, the seat surface and the front side of the back of the chair, the hollow cavities of the front legs and the seat surface form one group, the hollow cavities of the chair back and two rear legs form tee joint structures respectively and a steering switch is arranged, and the two rear legs are communicated with air outlets and air return openings of the central air-conditioner respectively through control switches. According to the central air-conditioner air-out system, the chair is used as the air-out device of the central air-conditioner of the service hall, cold air and hot air temperatures can be adjusted, when only several guests take a rest or wait in the service hall, the air outlets of the central air-conditioner of the hall can be closed, a power switch of the chair is merely required to be switched on, the guests can rapidly feel warm or cool, air-conditioning consumed energy can be saved, resources are saved, and energy saving and emission reduction can be achieved.