LW-52/8 氮气压缩机 – 大容量无油氮气增压器，适用于 0.80 MPa 工业分销

Delivering 52 m³/min at 0.80 MPa discharge pressure, the LW-52/8 is a two-stage, two-row oil-free piston nitrogen compressor engineered for large-scale cryogenic air separation, high-pressure VPSA nitrogen boosting, and demanding petrochemical pipeline distribution networks. Zero lubricant contamination, continuous-duty rated, and built for 24/7 industrial reliability at elevated pressure.

产品概述

这 LW-52/8 nitrogen compressor stands as a high-performance flagship within our oil-free piston compressor lineup, engineered specifically for applications demanding both substantial flow capacity and elevated discharge pressure. With an impressive 52 m³/min capacity coupled with a 0.80 MPa 排气压力, this unit addresses the most demanding nitrogen boosting requirements in large-scale industrial gas infrastructure.

What sets the LW-52/8 apart from conventional alternatives is its 完全无油压缩通道活塞环和活塞环带采用先进的自润滑聚四氟乙烯复合材料精密加工而成，无需任何碳氢化合物润滑剂即可运行。这种固有的无油特性确保氮气产品流完全不受污染，从而实现 ISO 8573-1 0级认证 natively. For operators in food processing, pharmaceutical manufacturing, and electronics fabrication, this eliminates the capital expenditure and ongoing maintenance burden of downstream oil-removal filtration systems.

压缩机架构采用了一种 两级两排（二列二级） configuration that optimally distributes the pressure ratio across two compression cylinders. This staged approach is essential for managing the thermal loads associated with 0.80 MPa discharge pressure while preserving the integrity of the PTFE sealing elements. Each stage features an independent intercooler, ensuring gas temperatures remain within safe operating envelopes even during sustained maximum-capacity operation. The robust cast-iron frame and dynamically balanced forged steel crankshaft are rated for a minimum service life of 120,000 小时 按照标准维护规程进行维护。

Technical Specifications – LW-52/8

* 所有规格均在标准参考条件下（ISO 1217，附录 C）测得。实际性能可能因现场海拔、环境温度和进气条件而异。

主要特性及工程优势

1. Advanced Oil-Free PTFE Composite Sealing System

The LW-52/8 employs a proprietary 自润滑活塞环和导向带组件 manufactured from high-density PTFE composites reinforced with glass fiber and bronze particulates. This material formulation achieves a coefficient of friction below 0.06 without any external hydrocarbon lubrication, completely eliminating the risk of oil vapor carryover into the nitrogen product stream. For industrial gas operators, this translates to 原生符合 ISO 8573-1 0 级标准 without the capital cost, maintenance burden, or energy penalty of downstream oil-filtration equipment. The PTFE rings are specifically formulated for the elevated discharge temperatures associated with 0.80 MPa operation, maintaining dimensional stability up to 180°C.

2. Optimized Two-Stage Thermodynamic Design

这 两阶段压缩架构 of the LW-52/8 is thermodynamically optimized for the 0.80 MPa discharge pressure target. By dividing the overall pressure ratio between a low-pressure cylinder and a high-pressure cylinder, the compressor achieves a significantly lower mean effective temperature per stage compared to single-stage designs. A dedicated high-efficiency shell-and-tube intercooler between stages removes the heat of compression, maintaining discharge temperatures below 155°C even at maximum continuous load. This thermal management is critical for preserving PTFE ring integrity and extending valve plate service life by approximately 40% versus single-stage alternatives operating at equivalent pressure ratios.

3. Heavy-Duty Cast-Iron Frame with Inherent Force Balance

主框架由……铸造而成 GG25 灰铸铁 （相当于 ASTM A48 30B 级）铸件上直接加工有整体式冷却水通道。 双排对置气缸排列 provides natural first-order force cancellation, reducing the unbalanced inertia forces transmitted to the foundation by over 80% compared to single-row designs of equivalent capacity. This mechanical advantage permits installation on a lighter reinforced concrete inertia block (minimum 10 tonnes versus 15+ tonnes for single-row equivalents), significantly reducing civil engineering costs and simplifying retrofit installations in existing compressor houses where foundation capacity may be limited.

4. Medium-Voltage Motor Drive for Industrial Integration

The LW-52/8 is driven by a 350千瓦中压感应电机 available in either 6kV or 10kV configurations, conforming to IEC 60034-1 efficiency class IE3. The medium-voltage drive eliminates the need for oversized low-voltage switchgear and heavy-gauge cabling that would be required for a 380V motor of this power rating. Direct integration into industrial medium-voltage distribution networks reduces electrical infrastructure costs, minimizes I²R losses in power cabling, and improves overall energy efficiency. For facilities with 6kV or 10kV bus systems standard in large industrial plants, the LW-52/8 offers plug-and-play electrical compatibility.

应用场景

Large-Scale Cryogenic Air Separation Plants

In large cryogenic ASU facilities producing 2,000–5,000 Nm³/h of gaseous nitrogen, the LW-52/8 serves as the 主高压氮气增压器 between the cold box and the distribution header. Its 52 m³/min capacity matches the output of large-scale ASUs, while the 0.80 MPa discharge pressure provides sufficient head for long-distance pipeline distribution to downstream consumers such as integrated steel mills, petrochemical complexes, and LNG regasification terminals. The oil-free design is critical in these applications because any oil contamination would compromise the purity of nitrogen supplied to sensitive processes, particularly in semiconductor and pharmaceutical manufacturing facilities served by the same distribution network.

高压VPSA氮气增压站

对于在接近大气压下生产纯度为 99.5–99.9% 氮气的大型 VPSA 制氮机而言， LW-52/8 nitrogen booster compresses the low-pressure product to 0.80 MPa for high-pressure distribution. The elevated discharge pressure is particularly valuable for VPSA installations serving multiple consumers through a centralized header, where pressure losses across the distribution network can be substantial. The oil-free compression path is absolutely essential in VPSA service because hydrocarbon contamination would irreversibly poison the carbon molecular sieve adsorbent, degrading separation efficiency and necessitating costly adsorbent replacement.

Petrochemical High-Pressure Nitrogen Injection

In petrochemical and refinery operations, the LW-52/8 provides high-pressure nitrogen for reactor inerting, catalyst preservation, pipeline purging, and emergency nitrogen injection into process vessels. The 0.80 MPa discharge pressure is sufficient to overcome the pressure ratings of typical process vessels and reactor systems, allowing direct nitrogen injection without intermediate boosting. The continuous-duty rating ensures uninterrupted nitrogen availability during extended turnaround and maintenance campaigns that may span several weeks. The oil-free certification is mandatory for petrochemical applications where nitrogen contacts catalyst beds or enters process streams that must remain hydrocarbon-free.

Steel Mill Inerting & Blast Furnace Gas Sealing

Integrated steel mills require massive volumes of nitrogen for blast furnace gas sealing, tundish inerting, and ladle metallurgy operations. The LW-52/8’s 52 m³/min capacity can serve multiple blast furnaces or continuous casting lines simultaneously through a centralized high-pressure nitrogen header. The 0.80 MPa discharge pressure provides adequate head to overcome the back-pressure of blast furnace gas systems and maintain positive sealing gas flow at tuyere level. The oil-free design prevents oil contamination of blast furnace gas, which would foul downstream gas cleaning equipment and compromise the quality of recovered blast furnace gas used for power generation.

材料与施工

The LW-52/8 is constructed from premium materials selected for nitrogen compatibility, high-pressure service, and extended operational life:

所有承压部件的设计和制造均严格按照以下规定进行： ASME BPVC 第 VIII 节第 1 部分 或中国 GB 150 标准。每个焊接接头均按照 ASME 第 V 卷第 2 条进行 100% 射线探伤 (RT)，每个完工的压力容器均在最大允许工作压力 (MAWP) 的 1.5 倍下进行水压试验，保持时间至少为 30 分钟。

安装和维护指南

基础及结构要求

The LW-52/8 has a dry weight of 6.00 tonnes and a center of gravity approximately 900 mm above the baseplate. Thanks to the two-row opposed-cylinder design, unbalanced forces are minimal, permitting installation on a 10-12吨钢筋混凝土惯性块. The block should be mounted on elastomeric vibration isolators (natural frequency 6–8 Hz) to prevent vibration transmission to adjacent structures and instrumentation. Minimum clearance requirements: 1.5 m on the non-drive side for valve access, 1.2 m on the drive side for motor maintenance, and 2.0 m overhead for crane access during major overhauls.

冷却水系统设计

冷却水需求量约为 55 m³/h 进水温度不超过 32°C。水分配回路通过并联支路向缸套、中间冷却器和后冷却器供水。水质规格：pH 值 6.5–8.5，总溶解固体 < 500 mg/L，氯化物 < 50 mg/L（以防止冷却器中 SS316 管腐蚀），悬浮物 < 30 mg/L，总硬度 < 300 mg/L（以 CaCO₃ 计）。对于水质较差的场所，强烈建议采用带旁路过滤和化学处理的闭式冷却塔，以防止结垢和腐蚀。

预防性维护计划

The oil-free design of the LW-52/8 dramatically reduces maintenance complexity compared to lubricated alternatives. There are no oil changes to schedule, no lubricating oil samples to analyze, no oil filter elements to replace, and no oil separator cartridges to monitor. The primary consumable wear items are the 聚四氟乙烯活塞环和活塞环带在洁净氮气环境下，这些设备通常可达到 4,000 至 6,000 小时的使用寿命。这种维护简化意味着更低的人工成本、更少的备件库存和更高的设备可用性。

合规与安全认证

The LW-52/8 nitrogen compressor is designed, manufactured, and tested to meet or exceed the following international standards and regulatory frameworks:

性能与效率分析

The LW-52/8 achieves a specific power consumption of approximately 6.73 kW per m³/min of nitrogen delivered at 0.80 MPa discharge pressure. This efficiency metric is commendable for an oil-free piston compressor operating at an elevated pressure ratio, positioning the unit favorably within the 40–60 m³/min capacity class. For comparison, oil-lubricated screw compressors in similar high-pressure applications typically consume 7.0–7.8 kW/m³/min, while legacy single-stage piston designs may exceed 8.5 kW/m³/min at equivalent discharge pressures.

Over a standard 8,000-hour annual operating schedule, the LW-52/8’s efficiency advantage generates approximately 112,000–280,000 kWh of annual energy savings compared to less efficient alternatives. At an average industrial electricity tariff of $0.08/kWh, this represents $8,960–$22,400 in direct operating cost reduction per year. When combined with the complete elimination of oil-related consumables (lubricating oil, filter elements, separator cartridges, waste oil disposal, and oil analysis), the 氮气压缩的总拥有成本 is reduced by an estimated 20–30% over a 10-year operational life.

The absence of oil in the compression path also eliminates the energy penalty associated with downstream oil-removal equipment. A typical oil-lubricated compressor of this size and pressure rating requires coalescing filters, activated carbon adsorbers, and continuous oil monitoring instrumentation that collectively consume 3–5% of the compressor’s power output. The LW-52/8’s oil-free design removes this parasitic load entirely, further improving effective system efficiency.

定制化和OEM能力

We offer extensive customization options to adapt the LW-52/8 to specific site conditions, integration requirements, and end-user specifications:

• 撬装式交钥匙工程： The compressor, motor, intercooler, aftercooler, instrumentation, and control panel are pre-assembled on a structural steel skid with integrated lifting lugs and anchor bolt templates. This approach reduces field installation time by approximately 60% and minimizes commissioning risks through factory pre-testing of all systems.
• 危险区域配置： 符合ATEX 2区和IECEx标准的电机和电气外壳适用于石化设施等偶尔可能存在爆炸性气体环境的环境。控制系统可集成气体检测和自动通风联锁装置。
• 高级过程控制： 可选配西门子 S7-1200 或 Allen-Bradley CompactLogix PLC，配备 10 英寸 HMI 触摸屏，可通过 Modbus TCP/IP 或 OPC-UA 进行远程监控，并可与工厂 DCS/SCADA 系统无缝集成。自动加载/卸载控制和变频器 (VFD) 兼容性可优化部分负载效率并减少启动过程中的机械磨损。
• 环境保护系统： 适用于沿海或近海安装的 C5-M 船用级涂层系统；适用于环境温度高达 55°C 的热带化电气元件；以及 IP54 防护等级的隔音罩，可将 1 米处的噪声排放从 85 dB(A) 降低到 72 dB(A)，适用于没有专用压缩机房的室内安装。
• OEM及自有品牌项目： 我们为燃气设备经销商和系统集成商提供定制涂装颜色、品牌铭牌和本地化文档包。技术手册、备件清单和维护规程可提供多种语言版本。

可提供自定义配置 最小起订量 1 件工程审核和方案制定通常需要 5-7 个工作日。标准交货时间为 12-14 周；重复订单在订单确认后 8-10 周内交付。

Case Study: Steel Mill Nitrogen Distribution Upgrade

客户： An integrated steel mill in Southeast Asia with two blast furnaces and four continuous casting lines

挑战： The mill’s existing nitrogen supply consisted of two aging oil-lubricated compressors (European brand, 18 years in service) feeding a common 0.60 MPa distribution header. The compressors were experiencing frequent oil carryover into the nitrogen stream, contaminating blast furnace gas sealing systems and causing tundish nozzle clogging during continuous casting. Maintenance costs had escalated to $85,000/year due to oil-related repairs, and the 0.60 MPa pressure was insufficient for new high-pressure tundish inerting requirements.

解决方案： 我们提供了 LW-52/8 oil-free nitrogen compressor as a replacement for the primary compressor, configured on a custom skid with integrated intercooler, aftercooler, and a Siemens S7-1200 PLC control panel with SCADA integration. The 0.80 MPa discharge pressure met the new tundish inerting requirements, while the oil-free design eliminated contamination of blast furnace gas and casting systems. A 5 m³ surge vessel was installed upstream to buffer demand fluctuations from the casting lines.

24个月后的量化结果：

• 氮油含量： Reduced from 4.2 mg/m³ to <0.01 mg/m³获得 ISO 8573-1 0 级认证
• Tundish nozzle clogging incidents: 完全消除, improving casting yield by 1.2%
• 年度维护成本： Reduced by 45% ($85,000 to $46,750) through elimination of oil-related repairs
• 能源消耗： Improved by 6.8% versus the replaced unit, saving approximately $19,200/year
• 计划外停机： 零事件 在连续运行24个月后

“The LW-52/8 has transformed our nitrogen supply from a maintenance headache into a reliable utility. The elimination of oil contamination has improved our casting quality and reduced nozzle replacements by 80%. The payback period was under 20 months.” — Chief Engineer, Steel Mill Operations

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