Nitric acid reduction clean system in production of coal system ethylene glycol

• Main Authors: LIU MIN, LIU JINGGANG, LU JUN, QIAO YUSHAN, LIN TAOHAI, GUAN GANG, RUAN JIANFEI, SHAN FURONG, LI XIANGRONG, LIU FEN, XU DAKUI, JIN HUA
• Format: Patent
• Language: Chinese; English
• Published: 16.03.2018
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; ORGANIC CHEMISTRY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The utility model relates to a nitric acid reduction clean system in production of coal system ethylene glycol, coal system ethylene glycol technology mainly includes coal gasification, separates purification, coupling reaction, regeneration reaction, hydrogenation etc. Its characterized in that: set up nitric acid reduction clean system after original system (A) regeneration technology, nitric acid reduction clean system include consecutive connect enter tower pre -heater (1) and nitric acid purifying column (4), the nitric acid purifying column comprises two parts, the first half of nitric acid purifying column is the upper column, the latter half is the lower column, the upper column of nitric acid purifying column is connected with upper column circulating pump (5), the lower column ofnitric acid purifying column has connected gradually lower column circulating pump (6) and flowing back cooler (2). Under the control of the same operate conditional sum technology operating mode, the utility model discloses