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Introduction to Bulk Packing

Release Date:

2015-12-06

1. QH flat ring packing

　　Packed bed with flat-ring packing offers the following advantages: large specific surface area and high mechanical strength; accelerated liquid–gas interfacial renewal and high mass-transfer efficiency; low pressure drop and high mass-transfer efficiency; tight packing arrangement, large gas flux, and high processing capacity.

Structural parameters of QH-1 stainless steel flat-ring packing:

Specifications	Dimensions in mm Outer diameter × height × thickness	Porosity ε%	Bulk density kg/m³	Specific surface area m²/m³	Number of accumulations 1 per cubic meter
Dg16	16x5.5x0.3	92.3	407	348	630000
Dg25	25x9.0x0.5	93.6	439	228	160000
Dg38	38 x 12.7 x 0.6	95	341	150	48000
Dg50	50x17x0.8	96.5	358	115	21500
Dg75	75x22.5x1.2	97.5	288	88	5800

Structural parameters of QH-1 carbon steel flat-ring packing:

Specifications	Dimensions in mm Outer diameter × height × thickness	Porosity ε%	Bulk density kg/m³	Specific surface area m²/m³	Number of accumulations 1 per cubic meter
Dg16	16x5.5x0.4	92.3	533	348	630000
Dg25	25x9.0x0.6	93.6	520	228	160000
Dg38	38 x 12.7 x 0.8	95	447	150	48000
Dg50	50x17x1.0	96.5	442	115	21500
Dg75	75x22.5x1.2	97.5	285	88	5800

2. Metal Rectangular Saddle Rings

Features: This type of packing ingeniously integrates the characteristics of both ring-shaped and saddle-shaped packings, combining the high throughput of ring-shaped packings with the excellent liquid distribution performance of saddle-shaped packings. It also exhibits good strength and rigidity, making it the most widely used random-packed material today.
Material: Stainless steel, low-carbon steel, copper, aluminum.
Characteristic parameters of stainless steel rectangular saddle ring packing:

Nominal size mm	Filler size mm	Unit volume Number: 1/m³	Porosity ε%	Dry packing factor α/ε3 m-1	Specific surface area m²/m³	Leveling plate height HETP mm	Bulk density γp kg/m³
25	25×15×0.3	87720	97.6	184	171	355~485	188
38	38×16.5×0.4	38160	97.7	132	123	460~610	181
50	50×29×0.5	11310	98.2	83	79	560~740	141
70	70×35.5×0.6	4250	98.5	58	55	790~1960	118

Characteristic parameters of carbon steel rectangular saddle ring packing:

Nominal size mm	Filler size mm	Unit volume Number: 1/m³	Porosity ε%	Dry packing factor α/ε3 m-1	Specific surface area m²/m³	Leveling plate height HETP mm	Bulk density γp kg/m³
25	25×15×0.5	87720	96.0	202	179	355~485	314
38	38×16.5×0.6	38160	96.6	141	127	460~610	267
50	50×29×0.8	11310	97.1	90	82	560~740	228
70	70×35.5×1.0	4250	97.5	61	57	790~1960	197

3. Metal Pall Ring

Features: Metal Pall ring packing features low pressure drop, high throughput, and high efficiency, as well as excellent liquid distribution within the packing bed.
Material: Stainless steel, low-carbon steel, copper, aluminum.
Characteristic parameters of stainless steel Pall ring packing:

Nominal diameter mm	External dimensions mm Outer diameter × height × thickness	Number of accumulations 1 per cubic meter	Bulk density kg/m³	Specific surface area m²/m³	Porosity ε%	Dry packing factor a/ε^3 m⁻¹	Leveling plate height HETP mm	Filler F-factor
16	16x16x0.3	214000	396	362	94.9	423
25	25x25x0.5	51940	393	219	95.0	255	384~475	0.37~2.68
38	38x38x0.6	15180	318	146	95.9	165
50	50x50x0.8	6500	314	109	96.0	124	488~549	1.34~2.93
76	76×76×1.2	1830	308	71	96.1	80

Characteristic parameters of carbon steel Pall ring packing:

Nominal diameter mm	External dimensions mm Outer diameter × height × thickness	Number of accumulations 1 per cubic meter	Bulk density kg/m³	Specific surface area m²/m³	Porosity ε%	Dry packing factor a/ε^3 m⁻¹	Leveling plate height HETP mm	Filler F-factor
16	16x16x0.4	214000	527	371	93.3	457
25	25x25x0.6	51940	471	223	94.0	268	384~475	0.37~2.68
38	38x38x0.8	15180	424	149	94.6	176
50	50x50x1.0	6500	393	110	95.0	128	488~549	1.34~2.93
76	76x76x1.5	1830	384	72	95.1	84

4. Metal阶梯环

Features: Compared with Pall rings, metal阶梯环 packing features a reduced ring height and a conical flange at one end, resulting in significantly improved performance. It offers lower pressure drop, higher throughput, higher efficiency, greater operational flexibility, and enhanced resistance to fouling.
Material: Stainless steel, low-carbon steel.
Characteristic parameters of stainless steel阶梯环 packing:

Nominal diameter mm	External dimensions mm Outer diameter × height × thickness	Number of accumulations 1 per cubic meter	Bulk density kg/m³	Specific surface area m²/m³	Porosity ε%	Dry packing factor a/ε^3 m⁻¹
25	25x12.5x0.5	98120	383	221	95.1	257
38	38x19x0.6	30040	325	153	95.9	173
50	50x25x0.8	12340	308	109	96.1	123
76	76x38x1.2	3540	306	72	96.1	81

Characteristic parameters of carbon steel stepped ring packing:

Nominal diameter mm	External dimensions mm Outer diameter × height × thickness	Number of accumulations 1 per cubic meter	Bulk density kg/m³	Specific surface area m²/m³	Porosity ε%	Dry packing factor a/ε^3 m⁻¹
25	25x12.5x0.6	98120	459	222	94.2	266
38	38x19x0.8	30040	433	154	94.5	183
50	50x25x1.0	12340	385	111	95.1	129
76	76x38x1.5	3540	385	72	95.1	84

5. Raschig rings

Introduction to Structured Packing

Tray Introduction

Introduction to Structured Packing

Tray Introduction

Introduction to Bulk Packing

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