SLH-type high-efficiency heat exchanger
Product description
General tube still heat exchanger featuring simple structure, low-cost and wide common utilization has been widely used. But due to bigger uneven distribution of sectional temperature in the tubes to high-viscosity medium, the heat exchange operation and heat-exchanging efficiency becomes lower so as leading quality degradation problems.
Aiming at this problem, our company through long term study of related technologies and joint research with other institutes has developed SLH-type high-efficiency heat exchanger.
SLH-type high-efficiency heat exchanger adopts static hybrid elements with heat conductive coefficient 3~6 times higher than that of common heat exchanger. The static hybrid elements show superiority in heat conduction that is identified by many professional persons, saying that the success of developing SLH-type high-efficiency heat exchanger proves the similarity theory of heat transfer and medium transfer.
Performance features
In addition to the superiorities of general tube still heat exchanger, SLH-type high-efficiency heat exchanger has additional features as:
1. Higher heat transfer efficiency especially to high viscosity medium
2. Without non-uniform distribution of sectional temperature of material in the pipe;
3.The piping pass has a function of auto-cleaning;
4.Similar heat transfer effect can be obtained by means of reducing the heat-transfer temperature deviation, reducing the entropy loss and raising the utilization of heat energy.
5. Similar heat transfer effect can be obtained by means of reducing the heat-transfer area and reducing land occupation by the equipment.
Application scope
SLH-type high-efficiency heat exchanger is suitable to heat transfer operation to high viscosity material with viscosity scope of 50~500000cp. It is widely used in petrochemical industry, foodstuff industry and synthetic fiber industry, such as PBT, PET Polyacrylonitrile fiber Polyethylene terephthalate etc., (Contact us for detailed design and type selection).
Structure1.Pipe shell 2. Bolt 3. Nut 4. Pipe sheet 5. Baffle 6. Heat transfer tube 7. Ear support 8. Exhaust outlet 9. Flange 10. Head 11. Sheet 12. Drainage outlet13. Support 14. Pull-rod 15.Cylinder 16. Shell connecting pipe
Notes:
1. This series belongs to fixed pipe plate type
2. The heat transfer tubes are arranged in triangular mode according to related standard;
3. The baffle is arch type with opening in up and down position or in right and left position;
4. The shell inlet is designed without baffle plates. If they are wanted, make it clear during ordering.
5. The erection form can be in vertical arrangement or horizontal arrangement;
6. The tubes and pipe plates are connected by welding operation;
Flanges used for this series equipment are concave-convex flange. The piping flanges are selected according to process calculation or the request of customer.
Technical Parameters

Type	Nominal diameter DN£¨mm£©	Dimension of heat transfer tubes	Pipe no.	Heat exchange aream2 nominal value/calculated value			Shell channel area m2
				Pipe length£¨£í£í£©
				750	1000	1500
SLH150	159X4.5	§æ19	15	0.5/0.62	1/0.85	1.5/1.29	0.0022
		§æ25	10	0.5/0.55	0.8/0.75	1/1.14	0.0027
SLH200	219X6	§æ19	36	1.5/1.50	2/2.04	3.0/3.11	0.0053
		§æ25	22	1/1.21	1.5/1.64	2.5/2.50	0.0060
SLH250	273X6	§æ19	69	3/2.88	4/3.91	6/5.97	0.0102
		§æ25	40	2/2.20	3/2.98	5/4.55	0.0110
SLH300	325X8	§æ19	106	/	6/6.00	9/9.17	0.0157
		§æ25	62		5/4.64	7/7.06	0.0170
SLH400	400X10	§æ19	195	/	11/11.05	17/16.86	0.0290
		§æ25	110		8/8.20	13/12.52	0.0301

Notes:
(1) Pressure 0.6, 1.0, 1.6 and 2.5 Mpa, four types (Vacuum according to 0.6 MPa );
(2) Temperature: According to material permitted temperature. The design temperature of this series is 200 oC. Temperature increase or pressure reduction operation can be applied.
Material: 16MnR; 1Cr18Ni9Ti; Q235-A; 0Cr17Ni12Mo2Ti.
Erection Size

SLH150

Parameter mm		Pressure MPa
		0.6			1.0			1.6			2.5
		Pipe length
		750	1000	1500	750	1000	1500	750	1000	1500	750		1000		1500
Connection pipe		L0=100 h0=239.5
	Lf	28			32			36			38
	DN	N1-2=50 N3-4=40 N5-6=20
Horizontal support	A1	242	492	992	242	492	992	242	492	992	242	492		992
	LA=250 H2=280 L2=170 K1=90 D1=20 F=60 B=140 R=10 t=20 S1=10
Vertical support		A=442 d=24 f=30 S=6 c=100 a=60 A total of 2
H1		72
L1		742	992	1492	742	992	1492	742	992	1492	742	992		1492
L		892	1142	1642	892	1142	1642	892	1142	1642	892	1142		1642
Weight£¨Kg£©		107	118	140	119	130	152	129	140	162	141	152		174

SLH200

Parameter mm		PressureMPa
		0.6					1.0						1.6											2.5
		Pipe length
		750		1000		1500	750		1000		1500		750			1000		1500					750		1000			1500
Connection pipe		L0=100 h0=269.5
	L£æ	32						34						40							42
	DN	N1-2=50 40 N3-4=50 N5-6=20
Horizontal support	A1	242	492		992			242		492		992		242	492				992			242					492			992
		LA=250 H2=310 L2=215 K1=120 d1=20 F=60 B=140 R=10 t=20 s1=10
Vertical support		A=506 d=24 f=30 s=6 c=100 a=60 A total of 2
£È1		88
£Ì1		742	992		1492			742		992		1492		742	992		1492			742						992			1492
£Ì		924	1174		1674			924		1174		1674		924	1174		1674			924						1174			1674
Weight(kg)		135	162		206			150		185		220		160	185		231			185						210			254

SLH250

Parameter mm			PressureMPa
			0.6					1.0						1.6											2.5
			Pipe length
			750		1000		1500	750		1000		1500		750			1000		1500					750		1000			1500
Connection pipe			L0=100 h0=269.5
		L£æ	30												32							38
		DN	N1-2=80 N3-4=50 N5-6=20
Horizontal support		A1	242	492		992			242		492		992		242	492				992			242					492			992
			LA=250 H2=337 L2=265 K1=160 d1=20 f 1=60 B=140 R=10 t=20 s1=10
Vertical support			A=562 d=24 f=30 s=6 c=100 a=60 A total of 2
£È1			88
£Ì1			742	992		1492			742		992		1492		742	992		1492			742						992			1492
£Ì			952	1202		1702			952		1202		1702		952	1202		1702			952						1202			1702
Weight(kg)	§¶25		203	233		293			225		255		316		250	280		341			275						304			306
	§¶19		¡ª	¡ª		¡ª			¡ª		¡ª		¡ª		¡ª	¡ª		¡ª			¡ª						¡ª			¡ª

SLH300

Parameter mm			PressureMPa
			0.6							1.0							1.6								2.5
			Pipe length
			1000	1500			1000			1500		1000		1500			750		1000			1500			750		1000			1500
Connection pipe			L0=125 h0=322.5
		L£æ	32						36							40								44
		DN	N1-2=100 N3-4=65 N5-6=25
Horizontal support		A1	392		892			392			242				892			392			892					392			892
			LA=300 H2=363 L2=310 K1=200 d1=20 F=60 B=140 R=10 t=2 s1=10
Vertical support			A=662 d=30 f=60 s=10 c=140 a=120 A total of 2
£È1			116
£Ì1			992			1492				992			1492			992				1492			992					1492
£Ì			1230			416				1230			416			1230				416			1230					416
Weight(kg)	§¶25		324			416				348			440			367				459			424					516
	§¶19		¡ª			¡ª				¡ª			¡ª			¡ª				¡ª			¡ª					¡ª

SLH400

Parameter mm		PressureMPa
		0.6			1.0				1.6			2.5
		Pipe length
		1000	1500		1000	1500		1000			1500	1000	1500
Connection pipe	L0	150
	h0	363			364				366			366
	L1
	DN	N1-2=150 N3-4=100 N5-6=25
Horizontal support	A1	292		792	292		792		292	792		292	792
	H2	411			412				414			414
		LA=300 L2=410 K1=280 d1=20 f1=60 B=140 R=10 t=20 S1=10
Vertical support	A	754			758				766			766
		f=60 S=10 c=140 a=120 A total of 2
H1		116
L1		992		1492	992		1492		992	1492		992	1492
L		1302		1802	1302		1802		1302	1802		1302	1802
Weight(kg£©	§æ25	492		617	515		640		592	715		627	752
	§æ19	¡ª		¡ª	¡ª		¡ª		¡ª	¡ª		¡ª	¡ª

Denotation of product typesExample of denotation
If nominal diameter is 300, nominal pressure is 1.0Mpa, heat exchange area is 9m2, the heat transfer tube is ¦Õ19 shell with carbon steel. The other heat exchanger is made with stainless steel. The model is shown as SLH300-1.0-9II-CS.
Application example
In a poly-condensation process to produce PBT in a factory with phototube heat exchanger with specification of 21m2, after using this high-efficient heat exchanger with heat exchange
area only 3.6m2, the parameter of energy saving and heat exchange efficiency become evident. The related material parameters are as follows:
1. Tube pass: PBT Pre-polymer, gravity 1.1t/m3, viscosity 1400cp, specific heat 0.65kcal/kg oC, thermo conductive coefficient 0.106kcal/m.h.oC, flow rate 15100kg/h, pressure 0.7Mpa, scaling coefficient 0.0002m2.hoC, temperature from 240 0C~242.50C.
2. Shell side:YD300 heat transfer oil density: 840kg/m3, specific heat 0.63kcal/kg 0C, thermo conductive coefficient 0.106kcal/m.h.oC, viscosity 0.48cst, temperature from 270 oC~267 oC.
Sheet of technical specifications of SLH-type high-efficiency heat exchanger

Notes:
1. Fill the table according to need;
2. All connection flanges are provided accordingly;
3. Special requirements should be submitted with drawings or character descriptions;
4. In addition to this series, our company can offer design and manufacturing of tandem-tube high-efficiency heat exchanger.