Shanghai Huachang Environmental Protection Co.

Shanghai, China

Shanghai Huachang Environmental Protection Co.

Shanghai, China
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Fu P.-B.,East China University of Science and Technology | Wang F.,East China University of Science and Technology | Yang X.-J.,East China University of Science and Technology | Ma L.,East China University of Science and Technology | And 2 more authors.
Environmental Science and Technology | Year: 2017

Many cities are suffering from severe air pollution from fine particulate matter. Cyclone is an effective separator for particulate pollutant but has low efficiency for those with an aerodynamic diameter of 2.5 μm or less (PM2.5). In this research, four novel inlet particle-sorting cyclones were first developed to enhance the separation of PM2.5. The energy consumption, overall separation efficiency, particle grade efficiency,outlet particle concentration and size distribution were compared with common cyclone (CM-C). It was found that the vertical reverse rotation cyclone (VRR-C), which made the smaller particles enter cyclone from radially outer side and axially lower side at the rectangular inlet, had the best separation performance, especially for PM2.5 separation. The mean diameter of inlet particles was 15.7 μm and the particle concentration was 2000 mg/m3, the overall separation efficiency of the VRR-C reached 98.3%, which was 6.4% higher than that of CM-C. PM2.5 grade efficiency of the VRR-C exceeded 80%, which was 15∼20% higher than that of CM-C. The PM2.5 content at the VRR-C outlet was 30.8 mg/m3, while that of CM-C was still 118.4 mg/m3. The novel inlet particle-sorting cyclone is an effective separation enhancement for PM2.5 source control in the process of industrial production and environment protection. (Graph Presented). © 2017 American Chemical Society.


Ma L.,East China University of Science and Technology | Pan H.,East China University of Science and Technology | Wang H.,East China University of Science and Technology | Yang Q.,East China University of Science and Technology | And 4 more authors.
Applied Mechanics and Materials | Year: 2010

This article focuses on the separation of ferrous impurities from emulsion with micro-hydrocyclone. The relationship of flow rate, pressure and separation efficiency is studied to determine the optimal operation condition. Results show the separation efficiency and the pressure difference increase with the inlet flow rate of the micro-hydrocyclone. When the inlet pressure is 0.4MPa, pressure difference △Pio is 0.26Mpa and the average inlet particle size is 2.719μm, the separation efficiency of the solid particles is 76% and the removal rate of solid particles with the size above 5.5μm is 85.64%, which contributes to the improvement of the quality of cold rolled sheet. © (2010) Trans Tech Publications.


Patent
Research Institute Of Nanjing Chemical Industrial Group and Shanghai Huachang Environmental Protection Co. | Date: 2011-08-25

Provided are a method and an apparatus for micro-hydrocyclone purification for a flue gas carbon dioxide capture system. The method comprises: performing gas-liquid micro-hydrocylone separation with ultralow pressure drop on scrubbed flue gas, to remove aerosol particulates entrained in the flue gas; performing gas-liquid micro hydrocyclone separation with ultralowpressure drop on off-gas vented from the top of an absorption column, to remove entrained aerosol particulates; performing gas-liquid micro hydrocyclone separation with ultralow pressure drop on cooled regeneration gas, to remove entrained aerosol particulates; and performing liquid-solid and liquid-liquid two-stage micro-hydrocyclone separation on a mixed amine solution lean for carbon dioxide discharged from regeneration column, to remove entrained solid particulates and machine oil. The apparatus comprises: a water scrubbing column, rotation flow separators, liquid-solid micro-hydrocyclone separator sets, a water scrubbing tank, a absorption column, a regeneration column, liquid-solid micro-hydrocyclones and liquid-liquid micro-hydrocyclones.


Ma L.,East China University of Science and Technology | Wu J.,East China University of Science and Technology | Zhang Y.,East China University of Science and Technology | Shen Q.,Shanghai Huachang Environmental Protection Co. | And 2 more authors.
Aerosol and Air Quality Research | Year: 2014

Recycled hydrogen is fed into a hydrogenation unit using a compressor with oil gas, amine droplets, and other hazardous gases at a super-high operating pressure after having been passed through a desulfurization system. This study developed a gas-liquid cyclone for removing amine droplets in recycled hydrogen based on computational fluid dynamics (CFD), an experimental study and industrial application. The results showed that the highest separation efficiency of the gas-liquid cyclone was 94.8% (experiment) and 97% (CFD) under 20°C and atmospheric pressure. Sampling and analysis showed that the highest separation efficiency for industrial application was 99.9% under 50°C and 10.7 MPa. The device purified the recycled hydrogen, and reduced both raw material losses and desulfurizer consumption. The energy consumption of the cycled hydrogen compressor and the pollution discharge of the hydrogenation unit were also reduced. © Taiwan Association for Aerosol Research.


Ma L.,East China University of Science and Technology | Shen Q.,Shanghai Huachang Environmental Protection Co. | Li J.,Shanghai Huachang Environmental Protection Co. | Zhang Y.,East China University of Science and Technology | And 2 more authors.
Chemical Engineering and Technology | Year: 2014

An efficient cyclone device for removing hydrocarbon fog droplets in recycled hydrogen was developed based on experimental studies and industrial application. Conditions for optimal separation efficiency of the gas-liquid cyclone were determined. The device reduced raw material losses and desulfurizer consumption and improved desulfurization efficiency, thereby increasing the purity of the cycled hydrogen and decreasing the mean molecular weight of gas. Energy consumption of the cycled hydrogen compressor as well as the pollution discharge of the hydrogenation unit were also diminished. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Ma L.,East China University of Science and Technology | Fu P.,East China University of Science and Technology | Wu J.,East China University of Science and Technology | Wang F.,East China University of Science and Technology | And 3 more authors.
Aerosol and Air Quality Research | Year: 2015

Based on the concept of particle arrangements at the entrance of a swirling flow field, this paper designs common cyclone (C-cyclone), positive rotation cyclone (PR-cyclone), and reverse rotation cyclone (RR-cyclone). FLUENT software is used to perform CFD (computational fluid dynamics) simulation study on these three cyclones. The study result shows that particles are more easily separated if they are closer to the lower part of the outer wall of the entrance to the swirling flow field, whereas particles access the short circuit current more easily if they are closer to the upper part of the inner wall, thereby generating particles escape. The RR-cyclone helps particles to avoid regions of short-circuiting flow, and thus improves the separation performance. In each part of the separator, the particle concentration within the RR-cyclone is lower than that in the C-cyclone and in the PR-cyclone. Moreover, the separation efficiency of the RRcyclone is higher than that of the C-cyclone and the PR-cyclone in different inlet flows. © Taiwan Association for Aerosol Research


Patent
Shanghai Huachang Environmental Protection Co. | Date: 2011-12-13

The present invention relates to a method and a device for enclosed recycling of oil-water-sludge in an oil shale dry distillation system. According to the method, the technology is advanced, equipment investment costs are low, the occupied area is small, the failure rate is low, a highly pure shale oil product and a highly concentrated oil sludge product can be obtained efficiently, and the waste water generated in the purification and concentration processes can be recycled, thereby achieving full enclosure of the device system, greatly reducing the energy consumption, and improving the oil shale dry distillation process in the prior art.


Patent
Shanghai Huachang Environmental Protection Co. | Date: 2012-07-25

The invention relates to a process and a device for treating a catalyst discharged from bubbling bed hydrogenation of residual oil. Provided is a process for treating a catalyst discharged from bubbling bed hydrogenation of residual oil, comprising the following steps: (1) adjustment and control to reduce viscosity; (2) desorption and separation by rotational flow; and (3) separation and resource utilization of an oil-water-catalyst three phase. Also provided is a device for treating a catalyst discharged from bubbling bed hydrogenation of residual oil.

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