Case Introduction
This project is a large-scale, high-priority initiative in the aromatics industry, with its unit capacity and tower diameter ranking among the world’s largest. For the core unit—the aromatics extractive distillation column (with a 10,800 mm diameter)—the conventional floating-valve tray design long employed in the process package failed to achieve the expected performance during actual operation. In March 2025, the owner was faced with an extremely tight one-month turnaround window, requiring completion of the entire scope of work—from design and fabrication to installation. Changsha Boneng rose to the challenge by introducing a major technological innovation: it replaced the original floating-valve trays with its independently developed high-throughput, high-efficiency BV-T fixed-valve trays. Following the retrofit, the unit’s performance improved markedly: key operating metrics were comprehensively optimized, energy consumption decreased by approximately 10% year-on-year, and annual steam-cost savings are projected to exceed RMB 30 million. This retrofit provides an innovative solution to the longstanding operational-efficiency challenges plaguing similar units, marking a significant breakthrough for Chinese tower internals manufacturers in the optimization of high-end process packages and offering a new pathway for the technological upgrading of aromatics units worldwide.
Key Characteristics of BV-T Solid Valve Tray
|
BV-T High-Throughput, High-Efficiency Fixed Valve
|
 |
Performance Metrics
|
Parameter Item |
Process Package Design Values (UOP) |
Original floating valve scheme |
BV-T Fixed Valve Solution |
BV-T has obvious advantages. |
|
Feed flow rate |
800414kg/hr |
836269kg/hr |
1072006kg/hr |
Processing capacity increased by 33% |
|
Feed temperature |
154°C |
140°C |
139°C |
|
|
Side-line withdrawal rate |
560.44t/hr |
594t/hr |
575t/hr |
Increased recovery rate |
|
Recycle flow |
1343 t/hr |
1459t/hr |
1255t/hr |
|
|
Recycle ratio |
2.4 |
2.45 |
2.18 |
Energy consumption reduced by 10% |
|
Total tower pressure drop |
79kpa |
75kpa |
70kpa |
Pressure drop reduction |
|
Side-line product metrics |
C8A ≤ 0.30% (wt) |
C8A 2.59% |
Benzene + Toluene: 99.95% C8A ≤ 0.002% |
Excellent indicator |
|
Bottom-of-Column Product Metrics |
Toluene ≤ 200 ppm (wt) |
Toluene 351 ppm (wt) |
PX: 99.61% Toluene ≤ 50 ppm |
Excellent indicator |
Related Products
Customer Message
* Note: Please ensure that all information is accurately provided and that your contact details remain up to date, so we can reach you as soon as possible.
WhatApp
Kuaishou
TikTok
Official Account
Official Account
Service Hotline
Address
No. 18, Lijiang Avenue, Langli Town, Changsha County, Hunan Province
Copyright © Changsha Boneng Technology Co., Ltd.
Powered by www.300.cn ChangSha