Welcome to the company ! we have many years of professional experience !
rsdzd@pyzyrsd.com +86 513525609655

low permeability oilfield oil extraction wastewater reinjection technology

Established in 2001, Puyang Zhong Yuan Restar Petroleum Equipment Co.,Ltd, “RSD” for short, is Henan’s high-tech enterprise with intellectual property advantages and independent legal person qualification. With registered capital of RMB 50 million, the Company has two subsidiaries-Henan Restar Separation Equipment Technology Co., Ltd We are mainly specialized in R&D, production and service of various intelligent separation and control systems in oil&gas drilling,engineering environmental protection and mining industries.We always take the lead in Chinese market shares of drilling fluid shale shaker for many years. Our products have been exported more than 20 countries and always extensively praised by customers. We are Class I network supplier of Sinopec,CNPC and CNOOC and registered supplier of ONGC, OIL India,KOC. High quality and international standard products make us gain many Large-scale drilling fluids recycling systems for Saudi Aramco and Gazprom projects.

Certificate of Honor

Get in touch with us

We will confidentially process your data and will not pass it on to a third party.

low permeability oilfield oil extraction wastewater reinjection technology
Role of organic/inorganic-sulfur doping on photocatalytic ...
Role of organic/inorganic-sulfur doping on photocatalytic ...

1/6/2019, · The ,acidity, of solids was inversely ,related, to chain length of organic-sulfur but positively correlated with electronegativity of inorganic-sulfur. The study will not only make a facile and effective way for developing highly-efficient heterogeneous catalysts, but also provide valuable insights for understanding relationship between surface physicochemical properties and catalytic activity.

PH-responsive bidirectional oil-water separation material ...
PH-responsive bidirectional oil-water separation material ...

This film is formed by a spontaneous redox ,sulfuration, reaction and results in a roughened surface, which enables reversible wetting transition between superhydrophilicity to superhydrophobicity.

Experiment Research on Disposal Acidic Wastewater From ...
Experiment Research on Disposal Acidic Wastewater From ...

Acidic ,wastewater, containing heavy metal ions,F-,arsenic,etc.from a copper-smelting plant can be treated by a process of first gypsification-,sulfuration,-neutralization using gypsum emulsion.The ,wastewater, treated meets with national standards and can be discharged.The gypsum product quality satisfies user's requirment by ,acidity, control in gypsification reaction process.The results show that ...

Hydrogen sulfide - Wikipedia
Hydrogen sulfide - Wikipedia

Hydrogen sulfide burns in oxygenwith a blue flame to form sulfur dioxide(SO. 2) and water. In general, hydrogen sulfide acts as a reducing agent, especially in the presence of base, which forms SH−. At high temperatures or in the presence of catalysts, sulfur dioxide reacts with hydrogen sulfide to form elemental sulfurand water.

Topological transformation of bismuth vanadate into ...
Topological transformation of bismuth vanadate into ...

31/10/2020, · Nonferrous metal smelting, an indispensable industry, is playing an increasingly important role [1], [2], [3]. However, a formidable challenge is how to efficiently treat, waste acid wastewater, containing, sulfuric acid,, chlorine and arsenic produced during the smelting of nonferrous metals [4].

Minerals | Free Full-Text | Release Behaviors of Arsenic ...
Minerals | Free Full-Text | Release Behaviors of Arsenic ...

The results are quite different from other studies, which may be, related to, the, acidity, of the sludge, the storage time, the concentration of heavy metal pollution in the, acid wastewater,, and the treatment effect of the, sulfuration, [29,32].The oxidizable forms of heavy metals bound to organic matters and sulfides can be easily released under oxidizing conditions .

US 6660157 B2 - Heavy Oil Hydrocracking Process With ...
US 6660157 B2 - Heavy Oil Hydrocracking Process With ...

In the present invention, a 2-4 level shear pump is preferably used in the flow pipeline for raw oil and catalyst which are thereby dispersed and mixed at about 2000-5000 turns/m. Thereafter, the ,sulfuration, of catalyst in the mixed materials is completed using gas containing hydrogen sulfide at the temperature of about 100-180° C.

A Review on Heavy Metal Ions and Containing Dyes Removal ...
A Review on Heavy Metal Ions and Containing Dyes Removal ...

Groundwater contamination is one of the most serious environmental issues which results through anthropogenic activities and atmospheric input, 68, 69 therefore World Health Organization (WHO) and Environmental Protection Agency (EPA) set the maximum permissible discharge limit in both the consumable water and ,wastewater, can only be 6.0×10 −3 mg L −1. 70 Heavy metal pollution is associated with primarily industrial ,wastewater,, ,wastewater, …

PH-responsive bidirectional oil-water separation material ...
PH-responsive bidirectional oil-water separation material ...

This film is formed by a spontaneous redox ,sulfuration, reaction and results in a roughened surface, which enables reversible wetting transition between superhydrophilicity to superhydrophobicity.

Environmental Science & Technology | Vol 54 No 21
Environmental Science & Technology | Vol 54 No 21

ABSTRACT. The removal of arsenic and heavy metals (HMs) from strongly acidic ,wastewater, by hydrogen sulfide (H2S) is an efficient method. However, traditional ,sulfuration, reagents (Na2S, FeS, CaS, etc.) rapidly release H2S under acidic conditions via spontaneous hydrolysis, leading …

ACP - Metrics - Sulfur dioxide emissions in China and ...
ACP - Metrics - Sulfur dioxide emissions in China and ...

Related, articles 13 Jul 2010. 13 Jul 2010 Sulfur dioxide emissions in China and sulfur trends in East Asia since 2000 . Z. Lu et al. Viewed. Show all Final revised paper …

Method of naphthalene sulphonation
Method of naphthalene sulphonation

The reaction mass in sulfonator maintained at 162±2°C for 3 hours, then take a sample for analysis. The operation is considered complete when total ,acidity, (in terms of sulphuric acid (25±1,5)% and the mass fraction of free sulfuric acid (6±1)%. As a result, after sulfonation get sulfones composition (wt.%):

Removal of heavy metals from synthetic wastewater using ...
Removal of heavy metals from synthetic wastewater using ...

carbon, composite by ,adsorption, method, Journal of Applied Research in Water and ,Wastewater,, 7 (1), 2020, 89-95. earlier, silica aerogel is used as an adsorbent because of its unique properties such as high specific surface area.

Handbook of Flotation Reagents Chemistry Theory and ...
Handbook of Flotation Reagents Chemistry Theory and ...

36 Full PDFs ,related, to this paper. READ PAPER. ,Handbook of Flotation Reagents Chemistry, Theory and Practice: Flotation, of Sulfide Ores. Download. ,Handbook of Flotation Reagents Chemistry, Theory and Practice: Flotation, of Sulfide Ores.

Environmental Science & Technology | Vol 54 No 21
Environmental Science & Technology | Vol 54 No 21

ABSTRACT. The removal of arsenic and heavy metals (HMs) from strongly acidic wastewater by hydrogen sulfide (H2S) is an efficient method. However, traditional sulfuration reagents (Na2S, FeS, CaS, etc.) rapidly release H2S under acidic conditions via spontaneous hydrolysis, leading …

Chemical Engineering Journal - Academic Accelerator
Chemical Engineering Journal - Academic Accelerator

ISSN The ISSN of Chemical Engineering Journal is 1385-8947 .An ISSN is an 8-digit code used to identify newspapers, journals, magazines and periodicals of all kinds and on all media–print and electronic. Chemical Engineering Journal Key Factor Analysis

Chemical Engineering Journal - Academic Accelerator
Chemical Engineering Journal - Academic Accelerator

Optimal ,wastewater, treatment using a packed-bed electrode reactor (PBER): From laboratory experiments to industrial-scale approaches: Rossella Girimonte · Brunello Formisani · Vincenzino Vivacqua · Vincenzino Vivacqua Thermally treated fungal manganese oxides for bisphenol A degradation using sulfate radicals

Corn stover–derived biochar for efficient adsorption of ...
Corn stover–derived biochar for efficient adsorption of ...

This film is formed by a spontaneous redox ,sulfuration, reaction and results in a roughened surface, which enables reversible wetting transition between superhydrophilicity to superhydrophobicity.

High-Performance Metal–Organic Framework-Templated Sorbent ...
High-Performance Metal–Organic Framework-Templated Sorbent ...

The remediation ,of wastewater, contg. such pollutants continue to be among the biggest challenges of Sustainable Development and Environmental Safety. Sorption-based technologies have proven their efficiency also in reducing the radionuclide content in aq. streams to low-level residual activity, with the concomitant decrease in the amt. of ultimate solid waste generated.

Chat Online Inquiry Email

Business cooperation

+86 513525609655

Company address

Road West, North Branch, Jingkai Road, Puyang City