DKT Energy Technology
National High-Tech Enterprise; Sichuan Provincial Enterprise Technology Center; Class B Qualification For Chemical Engineering Design; Class A Qualification For Environmental Pollution Prevention And Control; Pressure Pipeline GC1 Design Qualification
Technology and Equipment for CO2 Removal and Methane Recovery from Oilfield Associated Gas and Natural Gas
Release Date:
2010-12-03
Source:
I. Overview
On the one hand, the composition of most natural gas in China contains a certain amount of carbon dioxide; on the other hand, associated gas produced from oilfields through CO2-enhanced oil recovery is rich in both CO2 and methane. Traditionally, separating methane from CO2 has been challenging because conventional adsorbents simultaneously adsorb both gases, resulting in low separation efficiency. Consequently, alternative methods have been employed, but these often entail high energy consumption, are subject to environmental constraints, and thus suffer from significant limitations in practical application.
Our company has developed a new specialized adsorbent that can effectively remove carbon dioxide from associated gas in oilfields. The recovered methane meets the specifications for pipeline transportation, and the concentration of the removed carbon dioxide exceeds 98% It can be directly applied to tertiary oil recovery in oilfields, thereby reducing separation costs, lowering carbon dioxide emissions, and simultaneously purifying methane. This technology has already been implemented at the Daqing Oilfield.
China is a country with scarce natural gas resources and relies heavily on annual imports. Meanwhile, some unconventional methane-rich natural gas produced domestically is flared or vented due to the lack of efficient, low-cost recovery technologies, resulting in unnecessary resource waste and environmental pollution.
Our company has developed specialized adsorbents and process technologies tailored to the characteristics of unconventional natural gas, enabling the efficient recovery of various resources.
II. Technical Specifications:
Methane Yield: 98%
Methane Purity: 95%
Methane Impurities: Meet CH4 Pipeline Transportation Requirements
Carbon dioxide Yield: 98%
Carbon dioxide Purity: 98%
Carbon dioxide Impurities: Meet CO 2 Requirements for Enhanced Oil Recovery ( or simply processed into food-grade CO 2)
Deputy produce Object: High-purity low-carbon hydrocarbons ( Only for associated gas from oilfields )
III. Device Features:
Efficient separation CO2 and CH4 , while simultaneously obtaining two high-purity products.
PSA Operation without adding decarburization solution reduces operating costs;
PSA The operation is non-corrosive, thereby eliminating the risk of equipment corrosion.
Fully automated control to prevent human error.
IV. Applicable Fields:
Associated gas from oilfields undergoing tertiary recovery, carbon-dioxide-rich natural gas fields, and coalbed methane, among others.
Recommended News
Programmable control valves are critical components for the operation of pressure swing adsorption (PSA) and temperature swing adsorption (TSA) units, serving as the key equipment that ensures normal operation and reliable performance. Dakot’s specialized programmable control valves meet the American Petroleum Institute (API) zero-leakage standard, with a proven service life of over one million cycles without leakage, and feature resistance to frequent gas-flow erosion as well as automatic compensation of sealing materials.
Sichuan DKT Energy Technology Co., Ltd. (A subsidiary of Hydrexia (China)) has established the Sichuan Provincial Enterprise Technology Center, the Chengdu Engineering Technology Research Center for Industrial Waste Gas Purification and Utilization, and the China Petroleum and Petrochemical Engineering Gas Separation and Purification Technology Center, and boasts a professional team with high-level innovative R&D capabilities. After more than ten years of continuous research, DKT has successfully developed 30 new adsorbent materials on its own, which are widely used in the petrochemical, natural gas chemical, coal chemical, fine chemical, steel, metallurgical, environmental protection, and new energy industries, thereby establishing a complete industrial chain spanning R&D, production, design, and application.
High-Efficiency Helium Purification and Crude Helium Recovery Technology
For many years, Dakote has been dedicated to the development and application of helium extraction technologies, providing turnkey systems for helium recovery projects that have operated efficiently, safely, and reliably to this day. Specifically targeting helium-bearing feed streams such as natural gas and boil-off gas (BOG), the company has independently developed a patented ambient-temperature separation process for producing high-purity helium. Compared with conventional cryogenic helium separation technology, this approach offers greater operational convenience and significantly reduced energy consumption.
Hydrogen Production Technology
Hydrogen, as the cleanest green fuel, was officially classified as an energy source by the National Energy Administration on April 10, 2020, heralding an explosive surge in demand for hydrogen energy.
In response to the compositional characteristics of syngas generated during the clean, fractionated utilization of modern coal chemical processes and the associated application requirements, a comprehensive integrated technology for syngas separation and purification has been successfully developed. This technology encompasses pre-treatment via temperature swing adsorption (TSA) for impurity removal, sulfur-tolerant wide-temperature shift conversion, organic sulfur hydrolysis, water scrubbing for ammonia removal, MDEA-based desulfurization and decarbonization, fine desulfurization and dechlorination, catalytic deoxygenation, acid-gas desulfurization and sulfur recovery, PSA-based hydrogen enrichment, PSA-based methane concentration, PSA-based CO concentration, and membrane separation. The technology has been successfully implemented in several large-scale coal chemical projects across China and has received unanimous praise from users.
Pressure Swing Adsorption and Membrane Separation Technologies for Hydrogen Purification
Hydrogen is an important green and clean energy source as well as a key chemical feedstock, and has already been widely applied in numerous fields.
Sichuan DKT Energy Technology Co., Ltd.( A subsidiary of Hydrexia (China))
Sichuan DKT Energy Technology Co., Ltd.
(
(A subsidiary of Hydrexia (China))
-
Business:+862885256712 / +862885248678
Switchboard:+862885249678
Company email:dkt@hydrexia.com
Procurement Department Email:dkt-caigou@hydrexia.com
Website:www.scdkt.comAddress: Building 3, Zone A, No. 1 Chengfei Avenue, Qingyang District, Chengdu, Sichuan Province
Scan the code to browse the mobile website
Copyright © 2021 Sichuan DKT Energy Technology Co., Ltd. All rights reserved.
Procurement Department：dkt-caigou@hydrexia.com
Email：dkt@hydrexia.com
Business Hotline：+862885256712
Switchboard：+862885249678
monster