YINENG PRODUCTS

Horizontal Chain-Grate Thermal Oil Boiler

Model / Series YLW

A box-coil heater with radiant and convective sections and chain-grate combustion. Outputs span 1200–16500 kW.

The YLW series uses box-shaped coils with flat-laid top tubes to protect the roof. Flames transfer radiant heat through coil walls; gas then enters the convective section and exits via the tail-end surfaces.

The chain grate and body are dispatched separately. Fuel feeding, ventilation by forced- and induced-draft fans, and slag removal are mechanical. Fuel drops onto the grate; gas is reflected by the rear arch toward the front, passes radiant and convective surfaces, then the waste-heat boiler, air preheater and dust collector before chimney discharge.

Design and features

Split packaged construction

The body and grate are transported as upper and lower sections and assembled on site.

Independent air chambers

Independent air chambers distribute combustion air along the grate.

Stepless speed control

Stepless grate-speed adjustment matches fuel characteristics and supports combustion regulation.

Radiant section

Two-pass rectangular coils and top coils form the radiant surfaces, with tube banks secured by welded round steel.

Convective section and baffles

A spiral reciprocating arrangement and flue-gas baffles control gas flow.

PRODUCT DATA

Specifications

Detailed model designation: YLW-__rated heat output (kw)__MA
Model		1200	1400	2000	2400	3000	3500	4100	4700
Rated heat output	KW	1200	1400	2000	2400	3000	3500	4100	4700
X104Kcal/h		100	120	160	200	250	300	350	400
Thermal efficiency	（≥%）	76.46	77.7	78.08	78.08	78.47	78.5	79.2	79.5
Design pressure	（MPa）	1.1
Maximum medium temperature	（℃）	320
Thermal oil circulation flow	（m3/h）	100	100	160	180	200	200	250	250
Oil volume in heater	（m3）	1	1.1	1.9	2.2	2.38	3.1	3.4	3.8
Pipe connection nominal diameter	（DN）	150	150	150	150	200	200	200	200
Total installed system power	（KW）	43.45	43.45	65.75	70.75	86.75	89.35	118.05	132.55
Overall length	（mm）	4710	4710	5821	5821	6834	6814	6814	7214
Overall width	（mm）	2020	1930	2040	2040	2040	2500	2500	2500
Overall height	（mm）	3600	3808	4040	4349	4487	4487	4846	4874
Total equipment weight	（Kg）	17000	18000	25000	26100	34000	38600	40000	45000
Continued
Model		6000	7000	8200	9300	12000	13900	16500	--
Rated heat output X104Kcal/h	KW	6000	7000	8200	9300	12000	13900	16500	--
Rated heat output X104Kcal/h		500	600	700	800	1000	1200	1400	--
Thermal efficiency	（≥%）	79.5	79.1	79.5	79.7	81.1	79.1	80.01	--
Design pressure	（MPa）	1.1							--
Maximum medium temperature	（℃）	320							--
Thermal oil circulation flow	（m3/h）	300	340	400	520	600	800	1000	--
Oil volume in heater	（m3）	4.6	7.5	10	11.2	12	13.5	16.5	--
Pipe connection nominal diameter	（DN）	200	250	250	250	300	350	400	--
Total installed system power	（KW）	179.75	180.9	180.9	269.4	375.8	375.8	520	--
Overall length	（mm）	8850	9070	10250	11300	11830	12330	14450	--
Overall width	（mm）	3040	3200	3200	3200	3320	3686	4500	--
Overall height	（mm）	5235	5287	5432	5372	6070	5991	6605	--
Total equipment weight (Kg)		59000	70000	86500	95400	105000	113845	162240	--